COOPER & CHYAN TECHNOLOGY INC
10-Q, 1996-05-13
PREPACKAGED SOFTWARE
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 20549

                                    FORM 10-Q

(MARK ONE)

/X/ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
    EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1996

                                       OR

/ / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
    EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM     TO

                         COMMISSION FILE NUMBER: 0-26750

                         COOPER & CHYAN TECHNOLOGY, INC.
             (Exact Name of Registrant as Specified in Its Charter)

                  DELAWARE                                     77-0409778
        (State or Other Jurisdiction                        (I.R.S. Employer

     of Incorporation or Organization)                     Identification No.)

        1601 SOUTH DE ANZA BOULEVARD

           CUPERTINO, CALIFORNIA                                  95014
  (Address of Principal Executive Offices)                     (Zip Code)

                                 (408) 366-6966
               Registrant's Telephone Number, Including Area Code

         Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

                                    Yes   X    No
                                        ----       -----

         As of May 7, 1996, Registrant had outstanding 12,407,916 shares of
Common Stock.

See Exhibit Index on page 17

                                                                          Page 1
<PAGE>   2
                         COOPER & CHYAN TECHNOLOGY, INC.
                               QUARTERLY REPORT ON

                                    FORM 10-Q

                      FOR THE QUARTER ENDED MARCH 31, 1996

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
    FORM 10-Q      Name of Item                                                                                    Page
    ITEM NO.
<S>                <C>                                                                                            <C>
PART I
  Item 1.          Financial Statements
                        Consolidated Balance Sheets as of March 31, 1996 and December 31, 1995.....................  3
                        Consolidated Statements of Income for the Quarters Ended March 31, 1996 and 1995...........  4
                        Consolidated Statements of Cash Flows for the Quarters Ended March 31, 1996 and 1995.......  5
                        Notes to Consolidated Financial Statements.................................................  6

  Item 2.          Management's Discussion and Analysis of Financial Condition and
                   Results of Operations...........................................................................  7

PART II
  Item 5.          Other Information..............................................................................  15

  Item 6.          Exhibits and Reports on Form 8-K...............................................................  15

                   Signatures.....................................................................................  15
</TABLE>

                                                   ----------------------

         ShapeBased and IC Craftsman in combination with "Inspector,"
"Apprentice," "Journeyman" or "Master" and SPECCTRA, in combination with
"AutoRoute," "EditRoute" and "AutoPlace," are trademarks of the Company.
SPECCTRA and IC Craftsman are registered trademarks of the Company.

                                                                          Page 2
<PAGE>   3
                                     PART I

ITEM 1.  FINANCIAL STATEMENTS

                        COOPER AND CHYAN TECHNOLOGY, INC.
                           CONSOLIDATED BALANCE SHEETS
<TABLE>
<CAPTION>
                                                                          MARCH 31             December 31
                                                                            1996                  1995
                                                                            ----                  ----

                                                                         (UNAUDITED)
<S>                                                                      <C>                  <C>         
ASSETS
     Current Assets
           Cash and cash equivalents                                     $  3,059,791         $  3,000,177
           Short term investments                                          23,522,407           23,402,236
           Accounts receivable, net                                         5,221,251            4,360,639
           Deferred income taxes                                              373,525              373,525
           Prepaid expenses and other current assets                        1,163,786              994,152

                                                                         ------------         ------------
     Total current assets                                                  33,340,760           32,130,729

     Property, equipment, net                                               2,667,433            2,552,413
     Other assets                                                             248,708              291,093

                                                                         ------------         ------------
                                                                         $ 36,256,901         $ 34,974,235
                                                                         ============         ============

       LIABILITIES AND STOCKHOLDERS' EQUITY

     Current liabilities:
           Trade accounts payable                                             610,901              787,686
           Accrued salary and employee benefits                             1,324,949              747,943
           Other accrued liabilities                                        1,407,550            1,725,235
           Income taxes payable                                               391,029              142,185
           Deferred revenue                                                 2,535,180            2,601,492

                                                                         ------------         ------------
      Total current liabilities                                             6,269,609            6,004,541

      Deferred income taxes                                                   238,851              238,851

      Stockholders' equity

          Common stock                                                        120,757              119,408
          Additional paid-in capital                                       25,767,055           25,728,890
          Notes receivable from stockholders                                   (8,950)             (39,010)
          Deferred compensation                                              (380,825)            (404,626)
          Retained earnings                                                 4,250,404            3,326,181

                                                                         ------------         ------------
                 Total stockholders' equity                                29,748,441           28,730,843

                                                                         ------------         ------------
                                                                         $ 36,256,901         $ 34,974,235
                                                                         ============         ============
</TABLE>

                             See accompanying notes

                                                                          Page 3
<PAGE>   4
                         COOPER & CHYAN TECHNOLOGY, INC.

                        CONSOLIDATED STATEMENTS OF INCOME
<TABLE>
<CAPTION>
                                       QUARTER ENDED        Quarter ended
                                          MARCH 31             March 31
                                            1996                1995
                                            ----                ----
                                        (UNAUDITED)          (UNAUDITED)
<S>                                     <C>                  <C>         
Revenue
  License                               $  5,152,251         $  2,754,000
  Service                                  1,288,000              468,000
                                        ------------         ------------
Total revenue                              6,440,251            3,222,000
                                        ------------         ------------

Costs and expenses
      Cost of license revenue                274,438              141,000
      Cost of service revenue                127,664               51,000
      Research and development             1,395,191              969,000
      Sales and marketing                  2,750,327            1,563,000
      General and administrative             696,822              447,000
                                        ------------         ------------
Total costs and expenses                   5,244,442            3,171,000
                                        ------------         ------------

Income from operations                     1,195,809               51,000

Interest income                              261,283               14,125

Interest expense                              (1,040)             (13,125)

Other income (expense) net                    (5,637)                --

                                        ------------         ------------
Income before provision for                1,450,415               52,000
income taxes

Provision for income taxes                   493,598               20,000

                                        ------------         ------------
Net income                              $    956,817         $     32,000
                                        ============         ============

Net income per share                    $       0.07         $       0.00
                                        ============         ============

Shares used in computing per              13,759,465           11,383,000
share amounts                           ============         ============

</TABLE>

                             See accompanying notes.

                                                                  Page 4
<PAGE>   5
                         COOPER & CHYAN TECHNOLOGY, INC.

                      CONSOLIDATED STATEMENTS OF CASH FLOWS

                INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS
<TABLE>
<CAPTION>
                                                                           QUARTER ENDED MARCH 31
                                                                           ----------------------
                                                                            1996             1995
                                                                            ----             ----
     CASH FLOWS FROM OPERATING ACTIVITIES                               (UNAUDITED)      (UNAUDITED)
<S>                                                                     <C>                 <C>        
     Net Income                                                         $   956,817         $    32,000
     Adjustments to reconcile net income to net cash provided by
           (used in) operating activities:
           Depreciation and amortization                                    217,733             124,604
           Deferred income taxes                                               --                  --
           Amortization of deferred stock compensation                       23,801                --
     Changes in assets and liabilities:
           Accounts receivable                                             (860,612)            299,811
           Income taxes receivable                                             --              (165,000)
           Prepaid expenses and other current assets                       (169,634)            (24,204)
           Other assets                                                      42,385              17,987
           Trade accounts payable                                          (176,785)            267,833
           Accrued salary and employee benefits                             577,006             (79,215)
           Other accrued liabilities                                       (317,685)            202,098
           Income taxes payable                                             248,844                --
           Deferred revenue                                                 (66,312)             16,174
                                                                        -----------         -----------
        Total adjustments                                                  (481,259)            660,088
                                                                        -----------         -----------
   Net cash provided by operating activities                                475,558             692,088
                                                                        -----------         -----------

   CASH FLOWS FROM INVESTING ACTIVITIES

   Purchase of property and equipment                                  (332,753)           (212,445)
   Purchase of available-for-sale securities                             (9,144,017)            (68,334)
   Proceeds from sale of available-for-sale securities                    9,008,933              411288
                                                                        -----------         -----------
   Net cash provided by (used in) investing activities                     (467,837)            130,509
                                                                        -----------         -----------
   CASH FLOWS FROM FINANCING ACTIVITIES
   Proceeds (payments) on notes payable to
       stockholders                                                          30,060             (30,060)
   Repayment of bank credit facility                                           --              (380,015)
   Proceeds from issuance of common stock                                    39,514              38,845
                                                                        -----------         -----------
   Net cash provided by (used in) financing activities                       69,574            (371,230)
                                                                        -----------         -----------

   Net increase in cash and cash equivalents                                 77,295             451,367
   Effect of exchange rates on foreign currency
       cash balances                                                        (17,681)             24,732
   Cash and cash equivalents at beginning of period                       3,000,177           1,214,542
                                                                        -----------         -----------
   Cash and cash equivalents at end of period                           $ 3,059,791         $ 1,690,641
                                                                        ===========         ===========

      Supplemental disclosure of cash flow information
          Cash paid during the period for income taxes                  $   202,500         $   165,000
                                                                        ===========         ===========
</TABLE>


                             See accompanying notes.

                                                                          Page 5
<PAGE>   6
                         COOPER & CHYAN TECHNOLOGY, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

BASIS OF PRESENTATION

         The unaudited, condensed, consolidated financial statements included
herein have been prepared by the Company pursuant to the rules and regulations
of the Securities and Exchange Commission. Certain information or footnote
disclosure normally included in financial statements prepared in accordance with
generally accepted accounting principles have been condensed or omitted pursuant
to such rules and regulations. The statements reflect all adjustments of a
normal and recurring nature which are, in the opinion of management, necessary
to a fair statement of the results for the interim periods presented. These
financial statements should be read in conjunction with the Company's Annual
Report on Form 10-K for the fiscal year 1995 as filed with the Commission on
April 29, 1996. The interim results presented herein are not necessarily
indicative of the results of operations that may be expected for the full fiscal
year ending December 31, 1996 or any other future periods.

NET INCOME PER SHARE

         Net income per share is based on the weighted average number of common
and dilutive common equivalent shares outstanding during the periods. Common
equivalent shares include common stock issuable upon exercise of stock options
using the treasury stock method.

                                                                          Page 6
<PAGE>   7
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
        RESULTS OF OPERATIONS

OVERVIEW

         Except for the historical information contained herein, the matters
discussed in this Form 10-Q are forward-looking statements that involve risks
and uncertainties, including the timely availability and acceptance of new
products, the impact of competitive products and pricing, the management of
growth and the other risks detailed herein. The actual results that the Company
achieves may differ materially from any forward-looking statements due to such
risks and uncertainties.

         The Company develops, markets and supports software tools that help
designers route the physical wiring interconnections within high performance
printed circuit boards ("PCBs") and integrated circuits ("ICs"). The Company was
founded in 1989 and licensed its first product, SPECCTRA, for the PCB market in
December 1989. The Company has subsequently developed and released several new
versions of the product. As of March 31, 1996, SPECCTRA products were available
on a broad number of operating system platforms with several available option
packages. Until 1995, the Company derived substantially all of its revenue from
its SPECCTRA line of products. The IC Craftsman product line, introduced in
early 1995, has accounted for approximately 21% of the Company's total revenue
in 1995 and 31% of the Company's total revenue in the first quarter of 1996.

         Revenue consists primarily of fees for licenses of the Company's
software products and for maintenance and customer support. The Company
recognizes revenue from software licenses after shipment of the products and
fulfillment of acceptance terms, if any, and when no significant contractual
obligations remain outstanding and collection of monies owed is probable. After
delivering the software, the Company determines the significance of remaining
contractual obligations, if any, based on an estimate of the costs and
difficulty to fulfill the obligations in comparison to the overall contract.
When the Company receives payment prior to shipment and fulfillment of
significant vendor obligations, such payments are recorded as deferred revenue
and are recognized as revenue upon shipment and fulfillment of significant
vendor obligations.

         The Company also derives service revenue primarily from maintenance
agreements that provide customers access to product enhancements and customer
support. Most of the Company's customers have purchased annual maintenance
contracts on initial licenses and have renewed such contracts upon their
expiration. Maintenance revenue is deferred and recognized ratably over the term
of the maintenance agreement, which is typically one year. Revenue from customer
training, support and other services is recognized as the service is performed.

         Recently, the Company has significantly increased its research and
development and sales and marketing personnel. The increase in research and
development personnel was primarily to support the development of the IC
Craftsman product line. The increase in sales and marketing personnel was begun
in anticipation of the introduction of the IC Craftsman product line and was
continued in order to expand worldwide distribution, principally in Europe and
Japan. While the Company anticipates an increase in revenues as the IC Craftsman
product line gains commercial acceptance and international sales increase, there
can be no assurance that the Company will achieve revenue levels that justify
the increased expenses.

         The Company's revenues and results of operations are affected by
seasonal trends that may include higher revenues in the Company's second and
fourth fiscal quarters and lower revenues in its first and third fiscal quarters
as a result of many customers' purchasing and budgetary practices, and lower
revenues in the summer months (particularly in Europe) when many businesses make
fewer purchases. The Company's expense levels are based, in part, on its
expectations as to future revenue. If revenue levels are below expectations due
to delays associated with customers' acceptance and evaluation procedures or for
any other reason, operating results are likely to be materially adversely
affected. Net income, if any, may be disproportionately affected by a reduction
in revenue because only a small portion of the Company's expenses varies with
its revenue.

         Although the Company has recently experienced significant revenue
growth, such growth should not be considered to be indicative of future revenue
growth, if any, or of future operating results. The Company's recent revenue
growth is a result of increased unit volume and new product introductions. There
can be no assurance that the Company's revenue will grow or be sustained in
future periods or that the Company will remain profitable in any future period.
In addition, the rapid growth and expansion the Company has experienced has
placed, and continues to place, a significant strain upon its management,
operational and financial resources. The Company has grown from 75 permanent
full time employees at December 31, 1994 to 114 permanent full time employees at
March 31, 1996, and currently plans to continue to expand its staff.

                                                                          Page 7
<PAGE>   8
         To accommodate this recent growth, the Company is currently enhancing a
variety of new and upgraded operational and financial systems, procedures and
controls, including the improvement of its general ledger accounting and other
internal management systems, its customer database and its transaction
processing systems. There can be no assurance that the Company will be able to
continue to enhance these systems, procedures and controls successfully. The
failure of the Company to respond to and manage its growth and changing business
conditions, or to adapt its operational, management and financial control
systems to accommodate its growth, could have a material adverse effect on the
Company's business, financial condition and results of operations.

         The increase in the number of the Company's employees and the Company's
market diversification and product development activities have resulted in
increased responsibilities for the Company's management. The Company's senior
management team has worked together for only a short period of time. The
Company's ability to operate successfully will require such personnel to work
together effectively. Failure to do so could have a material adverse effect upon
the Company's business, financial condition and results of operations. 

RESULTS OF OPERATIONS

         The following table sets forth, for the periods indicated, certain
statement of operations data of the Company expressed as a percentage of total
revenue.
<TABLE>
<CAPTION>
                                                  QUARTER ENDED       QUARTER ENDED
                                                     MARCH 31            MARCH 31
                                                       1996               1995
                                                       ----               ----
<S>                                                   <C>                 <C> 
     Revenue
       License                                          80 %                 85 %
       Service                                          20                   15
                                                       ---                  ---
     Total revenue                                     100                  100
                                                       ---                  ---
     Costs and expenses 
           Cost of license revenue                       4                    4
           Cost of service revenue                       2                    2
           Research and development                     22                   30
           Sales and marketing                          43                   48
           General and administrative                   10                   14
                                                       ---                  ---
     Total costs and expenses                           81                   98
                                                       ---                  ---
     Income from operations                             19                    2
                                                       ---                  ---
     Interest/other income (net)                         4                    0
                                                       ---                  ---
     Income before provision for                        23                    2
     income taxes                                      ---                  ---
                                                                      
     Provision for income taxes                          8                    1
                                                       ---                  ---
     Net income                                        15 %                 1 %
                                                       ===                  ===
</TABLE> 


                                                                          Page 8
<PAGE>   9
         Revenue

         Total revenue increased by 100% from $3.2 million in the first quarter
of 1995 to $6.4 million in the first quarter of 1996. The percentage of the
Company's total revenue attributable to license fees decreased from 85% in the
first quarter of 1995 to 80% in the first quarter of 1996.

         License revenue increased by 87% from $2.8 million in the first quarter
of 1995 to $5.2 million in the first quarter of 1996. The increase in license
revenue from the first quarter of 1995 to the first quarter of 1996 was
primarily attributable to increased licensing of the Company's IC Craftsman
products and, to a lesser extent, to increased licensing of the Company's
SPECCTRA products.

         Service revenue increased by 175% from $0.5 million in the first
quarter of 1995 to $1.3 million in the first quarter of 1996. The increase in
service revenue in the period was primarily attributable to maintenance
contracts in connection with the continued growth of the installed base of
customers licensing the Company's products. The percentage of the Company's
total revenue attributable to service revenue rose from 15% in the first quarter
of 1995 to 20% in the first quarter of 1996. The company expects that service
revenue in absolute dollars will continue to increase. However, service revenue
as a percentage of total revenue may or may not increase depending upon a number
of factors, including new maintenance sales rates, maintenance renewal rates and
the level of consulting revenue.

         International license and service revenue accounted for $1.4 million in
the first quarter of 1995, rising to $2.2 million in the first quarter of 1996.
Because a majority of the Company's European revenue is denominated in U.S.
dollars, the Company has not engaged in European currency hedging activities
there. However, in Japan, where the Company's revenue is denominated in local
currency, the Company has entered into foreign exchange hedging activities. The
Company expects that international license and service revenue will continue to
account for a significant portion of its revenue in the short term, and as a
result, foreign currency exposure may increase.

         The Company's international revenue involves a number of risks,
including the impact of possible recessionary environments in economies outside
the United States, longer receivables collection periods and greater difficulty
in accounts receivable collection, unexpected changes in regulatory
requirements, reduced protection for intellectual property rights in some
countries, tariffs and other trade barriers, foreign currency exchange rate
fluctuations, difficulties in staffing and managing foreign operations, the
burdens of complying with a variety of foreign laws, potentially adverse tax
consequences and political and economic instability. There can be no assurance
that the foregoing factors will not have a material adverse effect on the
Company's future international license and service revenue and, consequently, on
the Company's business, financial condition and results of operations.

         In the first quarter of 1995, sales to Mentor Graphics Corporation
('Mentor Graphics') accounted for 19% of the Company's total revenue. By the
first quarter of 1996, this fell to below 10% of the Company's total revenue. No
other customer accounted for more than 10% of revenue during either of these two
periods.

         In the first quarter of 1996, revenue from distributors and OEMs
accounted for 27% of the Company's total revenue. The Company is dependent upon
the continued viability and financial stability of these distributors and OEMs.
Since the Company's products are used by highly skilled professional engineers,
an effective distributor or OEM representative must possess sufficient
technical, marketing and sales resources and must devote these resources to a
lengthy sales cycle, customer training and product service and support. In
addition, the Company's distributors and OEMs generally offer products of
several different companies, including, in some cases, products that are
competitive with the Company's products. Although the Company is not aware of
any financial difficulties being experienced by any of its OEMs or distributors,
there can be no assurance that Mentor Graphics or any of the Company's
distributors or other OEMs will be able to continue to market, service and
support the Company's products effectively, that economic conditions or industry
demand will not adversely affect these distributors and OEMs, that Mentor
Graphics or any distributor or other OEM that licenses the Company's products
will choose to continue to license such products or that any of these
distributors and OEMs will not devote greater resources to marketing and
supporting products of other companies. The current OEM agreement with Mentor
Graphics will expire in March 1998. There can be no assurance that the Company
will reach a subsequent agreement with Mentor Graphics. Should the Company fail
to reach a subsequent agreement with Mentor Graphics, there can be no assurance
that the Company would be successful in either securing alternative channels of
distribution for its products or expanding its own direct sales to replace
Mentor Graphics. The loss of, or a significant reduction in revenue from, Mentor
Graphics or any of the Company's distributors or other OEMs would have a
material adverse 

                                                                          Page 9
<PAGE>   10
effect on the Company's business, financial condition and
results of operations, at least to the extent such loss is not offset by a
corresponding increase in the Company's direct sales.

         Cost of Revenue

         Cost of license revenue includes personnel and related operating costs
associated with order processing, documentation and other production costs
related to the licensing of the Company's products. Cost of license revenue
increased by 94% from $141,000 in the first quarter of 1995 to $274,000 in the
first quarter of 1996. The increases in cost of license revenue was primarily
attributable to an increase in licenses of the Company's products. Cost of
license revenue was 4% of total revenue for both the first quarter of 1995 and
the first quarter of 1996.

         Cost of service revenue includes personnel and related costs allocated
to maintenance and other customer support activities. Cost of service revenue
increased by 150% from $51,000 in the first quarter of 1995 to $128,000 in the
first quarter of 1996. The increase in cost of service revenue was primarily
attributable to an increase in technical support personnel. Cost of service was
2% of total revenue for both the first quarter of 1995 and the first quarter of
1996.

         Research and Development

         Research and development expenses include all costs associated with the
development of new products and enhancements to existing products. Research and
development expenses increased by 44% from $1.0 million in the first quarter of
1995 to $1.4 million in the first quarter of 1996. These expenses were 30% and
22% of total revenue in the first quarter of 1995 and the first quarter of 1996,
respectively. The increase in expenses resulted principally from growth in the
number of research and development personnel. To date, all software development
costs have been expensed as incurred. The Company anticipates that it will
continue to commit substantial resources to research and development in the
future. At least for the short term, the Company expects research and
development expenses to increase in absolute dollars but to stay flat or
decrease slightly as a percentage of total revenue, to the extent revenue
increases. However, there can be no assurance that there will be a corresponding
increase in revenue to justify the increase in expenditure.

         Sales and Marketing

         Sales and marketing expenses consist of salaries, commissions paid to
internal sales and marketing personnel and certain third parties, promotional
costs and related operating expenses. Sales and marketing expenses increased by
76% from $1.6 million in the first quarter of 1995 to $2.8 million in the first
quarter of 1996. These expenses were 49% and 43% of total revenue in the first
quarter of 1995 and the first quarter of 1996, respectively. The increases in
sales and marketing expenses in each period consist principally of the cost of
additional sales and marketing personnel related to the expansion of the
Company's direct sales capability in the PCB market, to support the Company's
entry into the IC market and to expand worldwide distribution, principally in
Europe and Japan, and increases in variable sales compensation due to increased
revenue. The number of sales and marketing personnel increased from 37 at the
end of the first quarter of 1995 to 48 at the end of the first quarter of 1996.
At least for the short term, the Company expects sales and marketing expenses to
increase in absolute dollars but to stay flat or decrease slightly as a
percentage of total revenue, to the extent revenue increases. However, there can
be no assurance that there will be a corresponding increase in revenue to
justify the increase in expenditure.

         The increase in sales and marketing personnel was begun in anticipation
of the introduction of the IC Craftsman product line and has been continued in
order to expand worldwide distribution, principally in Europe and Japan. While
the Company anticipates an increase in revenues as the IC Craftsman product line
gains commercial acceptance and international sales increase, there can be no
assurance that the Company will continue to achieve revenue levels that justify
the increased expenses. The Company has relatively little experience in direct
sales in the IC market. There can be no assurance that expansion of the
Company's direct sales efforts will succeed or that such expansion will result
in increased sales. Although the success of this direct channel has reduced the
Company's dependence on the OEM channel, there can be no assurance that the
expansion of this channel will not have an adverse effect on existing
distributor and OEM relationships.

         The Company has expanded its sales and support organizations in Europe
and Asia, which has resulted in an increase in sales and marketing expenses. The
Company intends to further expand these organizations, resulting in additional
increases in sales and marketing expenses. However, the Company expects the
growth rate of such expenses to be lower than in the past. There can be no
assurance that the Company will be able to sustain or increase 

                                                                         Page 10
<PAGE>   11
revenue derived from international licensing and service. Any failure
to expand sales in foreign markets would have a material adverse effect on the
Company's business, financial condition and results of operations.

         General and Administrative

         General and administrative expenses increased 56% from $447,000 in the
first quarter of 1995 to $697,000 in the first quarter of 1996. These expenses
were 14% and 11% of total revenue in the first quarter of 1995 and the first
quarter of 1996, respectively. The increases in general and administrative
expenses was primarily attributable to the addition of new general and
administrative personnel. The number of general and administrative personnel
increased from 9 at the end of the first quarter of 1995 to 12 at the end of the
first quarter of 1996. A portion of the increase is also attributable to the
additional cost of professional and other fees associated with being a public
company, principally audit and legal fees and insurance premiums. At least for
the short term, the Company expects general and administrative expenses to
increase in absolute dollars but to stay flat or decrease slightly as a
percentage of total revenue, to the extent revenue increases. However, there can
be no assurance that there will be a corresponding increase in revenue to
justify the increase in expenditure.

         Income Taxes

         The provision for income taxes as a percentage of pre-tax income was
33% for 1995 and 34% for the first quarter of 1996. These percentages are less
than the federal and state combined statutory rate of approximately 40% due
primarily to the utilization of research and development credits in both
periods.


LIQUIDITY AND CAPITAL RESOURCES

         The Company has financed its operations to date with cash from
operations and through private and public sales of equity securities. Private
sales of equity securities have yielded approximately $2.5 million. In addition,
in October 1995, the company completed its initial public offering, raising
approximately $22.4 million.

         Net cash provided by operating activities in the first quarter of 1996
was $476,000 versus $692,000 in the first quarter of 1995. The cash generated
resulted principally from net income, with increases in accrued salary and
employee benefits being more than offset by an increase in receivables, and
decreases in accounts payable, accrued liabilities and deferred revenue. The
level of receivables rose in the first quarter of 1996 partly because a
significant portion of the revenue was billed towards the end of the quarter,
therefore not allowing sufficient time for collection before the quarter ended.
An additional reason for the increase in receivables in the period was an
increasing portion of the Company's revenue that was billed from its
international sites, where typically the Company experiences longer payment
cycles than revenue billed domestically.

         Cash used in investing activities resulted primarily from additions to
property and equipment and purchases of available for sale securities. Purchases
of property and equipment, consisting primarily of computer equipment, were
$333,000 in the first quarter of 1996 versus $212,000 in the corresponding
period.

         As of March 31, 1996, the Company had working capital of $27.1 million,
including cash, cash equivalents and short term investments of $26.6 million. As
of March 31, 1996, the Company had no bank indebtedness and no long-term
commitments other than operating lease obligations. The Company believes that
existing cash balances and funds generated from operations will provide the
Company with sufficient funds to finance its operations through at least the end
of 1996. Thereafter, the Company may require additional funds to support its
working capital requirements and for other purposes and may seek to raise such
additional funds through public or private equity financings or from other
sources. No assurance can be given that additional financing will be available
or that, if available, such financing will be obtainable on terms favorable to
the Company or its stockholders.

OTHER FACTORS THAT MAY AFFECT FUTURE OPERATING RESULTS

         The Company expects that it will face increasing pricing pressures from
its current competitors and new market entrants. There can be no assurance that
the Company's competitors will not engage in pricing practices that are
detrimental to the Company. In addition, the Company believes that the amount of
design work done by the users of the Company's products on Windows-based
personal computers is increasing relative to UNIX-based workstations. If this
trend continues, the average selling price of the Company's products may
decrease. There can be no assurance that such a decrease in average selling
price would be offset by an increase in the volume of sales.

                                                                         Page 11
<PAGE>   12
         Many of the Company's current and potential competitors have longer
operating histories, significantly greater financial, technical, product
development and marketing resources, greater name recognition and larger
customer bases than the Company. There can be no assurance that the Company's
competition will not be able to develop products comparable or superior to those
developed by the Company, adapt more quickly to new technologies, evolving
industry trends or customer requirements than the Company, or devote greater
resources to the development, promotion and sale of their products than the
Company. In addition, current competitors of the Company have established and
may establish cooperative relationships among themselves or with third parties
to increase the ability of their products to address the needs of the Company's
existing and prospective customers. Such alliances among competitors could
present increased competition to the Company. Moreover, the EDA industry has
become increasingly concentrated in recent years as the result of numerous
mergers and acquisitions. The Company expects that competition may increase as a
result of this increased concentration. There can be no assurance that the
Company will be able to compete successfully against current and future
competitors or that competitive pressures faced by the Company will not have a
material adverse effect on its business, financial condition and results of
operations.

         In addition, the introduction or announcement by the Company or one or
more of its competitors of products embodying new technologies or features could
render the Company's existing products obsolete or unmarketable. There can be no
assurance that the introduction or announcement of new product offerings by the
Company or one or more of its competitors will not cause customers to defer
purchases of existing Company products. Such deferral of purchases could have a
material adverse effect on the Company's business, financial condition and
results of operations.

         The Company's success is heavily dependent upon its proprietary
software technology. The Company does not currently have any patents and relies
principally on trade secret, copyright and trademark laws, nondisclosure and
other contractual agreements and technical measures to protect its technology,
including its ShapeBased technology. The Company generally enters into
confidentiality and/or license agreements with its employees, distributors and
customers, and limits access to and distribution of its software, documentation
and other proprietary information. The Company's software is shipped with a
software security lock which limits software access to authorized users. In
addition, the Company does not license or release its source code, except in
connection with source code escrow arrangements. However, effective copyright
and trade secret protection may be unavailable or limited in certain foreign
countries. There also can be no assurance that the additional steps taken by the
Company will prevent misappropriation of its technology. Any failure by or
inability of the Company to protect its proprietary technology could have a
material adverse effect on the Company's business, financial condition and
results of operations. Furthermore, such protections do not preclude competitors
from developing products with functionality or features similar to the Company's
products, and there can be no assurance that third parties will not
independently develop competing technologies that are substantially equivalent
or superior to the Company's technologies. However, the Company believes that,
due to the rapid pace of innovation within the EDA industry, factors such as the
technological and creative skills of its personnel, new product developments,
frequent product enhancements, name recognition and reliable product maintenance
are more important to establishing and maintaining a technology leadership
position than are the various legal protections of its technology.

         Although the Company does not believe its products infringe the
proprietary rights of any third parties and is not aware of any claims by any
third party that the Company is infringing any such right, there can be no
assurance that infringement claims will not be asserted against the Company or
its customers in the future. Furthermore, the Company may initiate claims or
litigation against third parties for infringement of the Company's proprietary
rights or to establish the validity of the Company's proprietary rights.
Litigation, either as plaintiff or defendant, would cause the Company to incur
substantial costs and divert management resources from productive tasks, whether
or not such litigation is resolved in the Company's favor, which could have a
material adverse effect on the Company's business, financial condition and
results of operations. Parties making claims against the Company could secure
substantial damages, as well as injunctive or other equitable relief, which
could effectively block the Company's ability to license its products in the
United States or abroad. Such a judgment could have a material adverse effect on
the Company's business, financial condition and results of operations. If it
appears necessary or desirable, the Company may seek licenses to intellectual
property that it is allegedly infringing. The Company is not currently seeking
any such license. There can be no assurance, however, that licenses could be
obtained on commercially reasonable terms, if at all, or that the terms of any
offered license would be acceptable to the Company. The failure to obtain the
necessary licenses or other rights could have a material adverse effect on the
Company's business, financial condition and results of operations. As the number
of software products in the industry increases and the functionality of these
products further overlaps, the Company believes that software developers may
become increasingly subject to infringement claims. Any such claims, with or
without merit, can be time consuming and 


                                                                         Page 12
<PAGE>   13
expensive to defend and could adversely affect the Company's business,
financial condition and results of operations. There are currently no pending
claims that the Company's products, trademarks or other proprietary rights
infringe the proprietary rights of third parties.

         The Company's future depends in large part on the continued service of
its key technical personnel, in particular its founders, and its ability to
continue to attract and retain such personnel, many of whom are highly skilled.
The competition for such personnel in the software industry in general, and the
EDA industry in particular, is intense, and there can be no assurance that the
Company will retain its key technical personnel or continue to attract such
personnel in the future. There are only a limited number of qualified EDA
engineers, and competition for such individuals is especially intense. The
Company has at times experienced and continues to experience difficulty in
recruiting qualified technical personnel. Although such difficulties have not
had a material impact on the Company's business to date, there can be no
assurance that such difficulties will not do so in the future. Generally, the
Company's employees are not bound by employment or noncompetition agreements or
covered by key man life insurance policies. In addition, competitors may attempt
to recruit the Company's key employees. The loss of any key technical,
management or marketing personnel or the failure to recruit such personnel
successfully in the future could have a material adverse effect on the Company's
business, financial condition and results of operations.

         The EDA industry is characterized by extremely rapid technological
change, frequent new product introductions and enhancements, evolving industry
standards and rapidly changing customer requirements. Customers in the EDA
industry require software products that allow them to minimize their
time-to-market, differentiate their products, maximize their engineering
productivity and reduce design time and costs. The Company's future success will
depend upon its ability to continually enhance its current products and develop
and introduce new products that keep pace with technological advancements and
address the increasingly sophisticated needs of its customers. There can be no
assurance that the Company will be successful in developing and marketing
product enhancements or new products that respond to technological change,
evolving industry standards and changing customer requirements, that the Company
will not experience difficulties that could delay or prevent the successful
development, introduction and marketing of these products or product
enhancements or that its new products and product enhancements will adequately
meet the requirements of the marketplace and achieve any significant degree of
market acceptance. Failure of the Company, for technological or other reasons,
to develop and introduce new products and product enhancements in a timely and
cost-effective manner would have a material adverse effect on the Company's
business, financial condition and results of operations. Any failure by the
Company to anticipate or to respond adequately to changing market conditions, or
any significant delays in product development or introduction, could cause
customers to delay or decide against purchases of the Company's products and
would have a material adverse effect on the Company's business, financial
condition and results of operations.

         Software products as complex as those offered by the Company may
contain defects or failures when introduced or when new versions are released.
The Company has in the past discovered software defects in certain of its
products and may experience delays or lost revenue correcting such defects in
the future. Although the Company has corrected known material defects and has
not experienced material adverse effects resulting from any such defects to
date, there can be no assurance that, despite testing by the Company, errors
will not be found in new products or releases after commencement of commercial
shipments. Any such occurrence could result in loss of market share or failure
to achieve market acceptance and could have a material adverse effect upon the
Company's business, financial condition and results of operations.

         The Company's future operating results are significantly dependent upon
continued enhancement and market acceptance of its SPECCTRA product line and
successful market acceptance of its IC Craftsman product line. There can be no
assurance that the SPECCTRA product line will continue to be adequately enhanced
to achieve continued market acceptance or that the Company will be successful in
marketing the IC Craftsman product line or any other new or enhanced products.
The Company believes that a number of factors will be necessary for its IC
Craftsman products to achieve, and its SPECCTRA products to continue to achieve,
broad market acceptance. These factors include performance, price,
interoperability with existing systems and the customer's assessment of the
Company's technical, managerial, service and support expertise and capability.
Failure to succeed with respect to any of these factors could result in the
Company's failure to achieve market acceptance of its products, which would have
a material adverse effect on the Company's business, financial condition and
results of operations. A decline in demand for any of the Company's products as
a result of competition, technological change or other factors would have a
material adverse effect on the Company's business, financial condition and
results of operations. In addition, factors adversely affecting the EDA market
generally could have a material adverse effect on the Company's business,
financial condition and results of operations.

                                                                         Page 13
<PAGE>   14
         The sales cycle for the Company's products is relatively lengthy. In
particular, orders for licenses of the Company's IC Craftsman products in a
given quarter are typically made by relatively fewer customers and in larger
amounts as compared to orders for licenses of the Company's SPECCTRA products.
Accordingly, because IC Craftsman revenues have increased as a percentage of the
Company's total revenues, such licenses ordered by a single customer can account
for a significant portion of a quarter's revenues. Because the Company's
expenses are relatively fixed in the short term, the loss or delay of such
orders by a single customer or multiple customers could have a material adverse
effect on the Company's business, financial condition and results of operations.

         In addition, the Company believes that its quarterly and annual
operating results have in the past and may in the future vary significantly
depending on factors such as variations in product development or operating
expenditures, increased competition, the purchasing patterns of its customers,
the timing of customer design and development projects, the timing of customer
evaluation and acceptance, the timing of expenditures by the Company in
anticipation of product releases or increased revenue, the timing of product
enhancements and product introductions by the Company and its competitors,
market acceptance of new and enhanced versions of the Company's products, the
size, timing and structure of significant licenses, changes in pricing policies
of the Company and its competitors, variations in the mix of products the
Company licenses, delays in processing orders, the mix of direct and indirect
sales, changes in Company strategy, personnel changes and general economic
factors. Any unfavorable changes in these or other factors could have a material
adverse effect on the Company's business, financial condition and results of
operations.


                                                                         Page 14
<PAGE>   15
                                     PART II

ITEM 5.  OTHER INFORMATION

         On May 6, 1996, the Company signed agreements with Synopsys, Inc.
("Synopsys") to enter into a strategic marketing and development relationship.
The strategic relationship focuses on the development of new tools and
methodologies for designing multi-million gate ICs that utilize silicon
geometries of quarter-micron and below.

         As part of this strategic relationship, Synopsys purchased
approximately 9.9 percent of the outstanding Common Stock of the Company at
$14.50 per share. In connection with this equity investment, Synopsys has also
been granted certain rights to maintain its percentage ownership interest in the
Company. The cash investment by Synopsys consisted of 1,046,250 shares of stock
purchased from corporate officers as well as 160,292 newly issued shares
purchased from the Company. The $14.50 share price was based on the average
closing price of the Company during an agreed upon 30-day period.

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

         The following exhibits are filed herewith or incorporated by reference:

EXHIBIT
NUMBER                           EXHIBIT TITLE

(a)      See attached Exhibit Index.

(b)      Reports on Form 8-K.

         No reports on Form 8-K were filed during the quarter ended March 31,
1996.

                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

Dated:  May 9, 1996        COOPER & CHYAN TECHNOLOGY, INC.

                                By:/s/    Robert D. Selvi
                                   -----------------------------------------
                                       Robert D. Selvi
                                       Chief Financial Officer
                                       (Duly Authorized Officer and Chief 
                                        Accounting Officer)


                                                                         Page 15
<PAGE>   16
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                   -----------

                                    EXHIBITS
                                       TO
                                    FORM 10-Q

                                      UNDER
                       THE SECURITIES EXCHANGE ACT OF 1934

                                   -----------

                         COOPER & CHYAN TECHNOLOGY, INC.


                                                                         Page 16
<PAGE>   17
                                        EXHIBIT INDEX

EXHIBIT                                                                  PAGE
NUMBER                 EXHIBIT TITLE                                     NUMBER
- - - ------                 -------------                                     ------

4.01                Stock Purchase Agreement dated as of May 6, 1996 among
                    Synopsys, Inc., the Company, John F. Cooper, David Chyan,
                    John R. Harding, William Portelli and Robert D. Selvi.

4.02                Investor Rights Agreement dated as of May 6, 1996 among
                    Synopsys, Inc., the Company, John F. Cooper, David Chyan,
                    John R. Harding, William Portelli and Robert D. Selvi.

11.01               Statement of Computation of Net Income Per Share.

27.01               Financial Data Schedule, which is submitted electronically
                    to the Securities and Exchange Commission for information
                    only and is not filed.

                                                                         Page 17

<PAGE>   1
                                                                    EXHIBIT 4.01

                            STOCK PURCHASE AGREEMENT

         This STOCK PURCHASE AGREEMENT is made as of May 6, 1996, by COOPER &
CHYAN TECHNOLOGY, INC., a Delaware corporation (the "Company"), JOHN F. COOPER,
DAVID CHYAN, JOHN R. HARDING, WILLIAM PORTELLI and ROBERT D. SELVI, individuals
(the "Selling Stockholders"), and SYNOPSYS, INC., a Delaware corporation
("Synopsys").

                                    Recitals

         A.   The Company desires to issue and sell 160,292 shares (the "Company
Shares") of its authorized Common Stock, without par value (the "Common Stock")
to Synopsys at a price of $14.50 per share for an aggregate purchase price of
$2,324,234.00.

         B.   Each of the Selling Stockholders desires to sell to Synopsys that
number of shares of Common Stock set forth opposite such Selling Stockholder's
name on Exhibit A at a price of $14.50 per share. Collectively, the Selling
Stockholders desire to sell a total of 1,046,250 shares to Synopsys for an
aggregate purchase price of $15,170,625.00.

         C.   Synopsys desires to purchase the shares of the Company's Common
Stock referred to in Recitals A and B above (collectively, the "Shares") from
the Company and the Selling Stockholders on the terms and subject to the
conditions of this agreement.

         D.   In connection with the transaction contemplated by this agreement,
(i) counsel to the Company is delivering an opinion in the form of Exhibit B ,
and (ii) the Company and Synopsys are entering into an Investor Rights Agreement
(the "Investor Rights Agreement"), a Joint Marketing Agreement (the "JMA"), a
Cooperative Development Agreement (the "Development Agreement"), and a Sematech
Development Subcontract (the "Sematech Agreement"), each dated the date of this
agreement.

         NOW, THEREFORE, the parties, intending to be legally bound, hereby
agree as follows:

                                    SECTION 1

                              Sale of Common Stock

         1.1   The Company hereby issues and sells to Synopsys, and Synopsys
hereby purchases from the Company, the Company Shares at a price of $14.50 per
share. Synopsys acknowledges receipt of a stock certificate evidencing the
Company Shares, bearing the legend referred to in Section 4.2(a) and standing in
Synopsys' name. The Company acknowledges receipt from Synopsis of $2,324,234.00,
representing payment in full for the Company Shares.
<PAGE>   2
         1.2   Each of the Selling Stockholders hereby sells to Synopsys, and
Synopsys hereby purchases from such Selling Stockholder the number of Shares set
forth opposite such Selling Stockholder's name under the caption "No. of Shares
Sold" on Exhibit A at a price of $14.50 per share. Synopsys acknowledges receipt
from each Selling Stockholder of a stock certificate evidencing the number of
Shares set forth opposite such Selling Stockholder's name on Exhibit A under the
caption "No. of Shares Sold" together with a stock power properly endorsed for
transfer of such certificate to Synopsys. Each Selling Stockholder acknowledges
receipt from Synopsys of the amount set forth opposite such Selling
Stockholder's name on Exhibit A under the caption "Total Purchase Price"
representing payment in full for such Shares.


                                    SECTION 2

   Representations and Warranties of the Company and the Selling Stockholders

         Each of the Company and the Selling Stockholders, severally and not
jointly, represents and warrants to Synopsys that, except as set forth in the
CCT Disclosure Letter dated the date of this agreement, initialed on behalf of
the Company and Synopsys and delivered to Synopsys, which exceptions shall be
deemed to be representations and warranties as if made hereunder:

         2.1   Organization and Standing; Certificate and Bylaws . The Company 
is a corporation duly organized, validly existing and in good standing under the
laws of the State of Delaware and has all requisite corporate power and
authority, and all governmental licenses, authorizations, consents and approvals
required, to carry on its business as now conducted and as proposed to be
conducted. The Company is duly qualified to transact business and is in good
standing in each jurisdiction in which the failure so to qualify, individually
or in the aggregate, would have a material adverse effect on the assets,
condition or prospects of the Company, financial or otherwise (a "Material
Adverse Effect"). As of the date of this agreement, the Certificate of
Incorporation and the Bylaws of the Company shall be in the form previously
provided to Synopsys or its counsel.

         2.2   Authorization .

               (a)   The Company has all requisite corporate power and authority
to execute and deliver, and to consummate the transactions contemplated by, this
agreement, the Investor Rights Agreement, the JMA, the Development Agreement and
the Sematech Agreement (collectively with the CCT Disclosure Letter referred to
above, the "Transaction Documents"). All corporate action on the part of the
Company, its officers, directors and stockholders necessary for (i) the
execution and delivery of, and the consummation of the transactions contemplated
by, the Transaction Documents, (ii) the performance of all obligations of the
Company under the Transaction Documents, and (iii) the authorization, issuance
(or reservation for issuance) and delivery of the Company Shares, has been
taken. The Transaction Documents, upon execution and delivery by the Company,
and, to the extent that they are parties thereto, the Selling Stockholders, and
assuming the due and proper execution and delivery by Synopsys, constitute
legal, valid and binding obligations of the Company, enforceable in 


                                      -2-
<PAGE>   3
accordance with their respective terms, except as may be limited by (x)
applicable bankruptcy, insolvency, reorganization or other laws of general
application relating to or affecting the enforcement of creditors rights
generally, and (y) the effect of rules of law governing the availability of
equitable remedies.

               (b)   The Company Shares, when issued and paid for in compliance
with the provisions of this agreement, will be validly issued, fully paid and
nonassessable and will be free of any liens or encumbrances known to, or caused
or created by, the Company or any of the Selling Stockholders.

               (c)   No entity has any right of first refusal or any preemptive
right in connection with the issuance of the Shares or any future issuances of
securities by the Company, except as set forth in the Transaction Documents.

          2.3   Capitalization . The authorized capital stock of the Company
consists of 30,000,000 shares of Common Stock and 5,000,000 shares of Preferred
Stock. As of May 3, 1996, there are issued and outstanding 12,241,929 shares of
Common Stock and no shares of Preferred Stock. There are no outstanding rights,
employee benefit plans, options, warrants, conversion rights or agreements for
the purchase or acquisition from the Company of any shares of its capital stock,
except (i) the 4,184,099 shares of Common Stock reserved for issuance under the
Company's 1989 Stock Option Plan, 1993 Equity Incentive Plan, 1995 Directors
Stock Option Plan and 1995 Employee Stock Purchase Plan and the rights of the
Company under such plans, (ii) the Company Shares reserved for issuance pursuant
to this agreement, and (iii) as set forth in the Transaction Documents.

          2.4   Subsidiaries . The Company does not own or control, directly or
indirectly, any equity interest in any other corporation, limited liability
company, partnership, or other entity.

          2.5   Consents and Authorizations .

               (a)   No consent, approval, order or authorization of, or
registration, qualification, designation, declaration or filing with, any
federal, state or local governmental authority on the part of the Company is
required in connection with the execution, delivery and performance of, and the
consummation of the transactions contemplated by, the Transaction Documents,
except for such filings as may be required to be made with the Securities and
Exchange Commission (the "Commission") and the National Association of
Securities Dealers, Inc. (the "NASD").

               (b)   No consent, approval, waiver or other action by any entity
under any material contract, agreement, indenture, lease, instrument or other
document to which the Company is a party or by which it is bound is required or
necessary for the execution, delivery and performance of, or the consummation of
the transactions contemplated by, any of the Transaction Documents by the
Company.

                                       -3-
<PAGE>   4
               2.6   No Conflict . The execution and delivery of the Transaction
Documents do not, and the consummation of the transactions contemplated thereby
will not, (i) conflict with any provision of the Certificate of Incorporation or
Bylaws of the Company, or (ii) result in any violation of, or default under
(with or without notice or lapse of time, or both), or give rise to a right of
termination, cancellation or acceleration of any obligation or to a loss of a
material benefit under, any mortgage, indenture, lease or other agreement or
instrument, permit, concession, franchise, license, judgment, order, decree,
statute, law, ordinance, rule or regulation applicable to the Company, its
properties or assets, which, individually or in the aggregate, would have a
Material Adverse Effect on the Company or materially impair or restrict its
power to perform its obligations as contemplated by the Transaction Documents.

               2.7   Accuracy of Reports . The Company's Registration Statement
on Form S-1, as amended and declared effective by the Commission on October 30,
1995, and all reports required to be filed by the Company thereafter to the date
of this agreement under the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), copies of which have been furnished to Synopsys or its counsel,
have been duly filed, were in compliance with the requirements of their
respective forms, and contained as of their respective dates no untrue statement
of a material fact nor omitted to state a material fact necessary in order to
make the statements made therein in light of the circumstances in which made not
misleading.

               2.8   Financial Statement and Changes . The Company has delivered
to Synopsys the Company's consolidated balance sheets as of December 31, 1993,
1994, and 1995 and the related statements of operations, stockholders' equity
and changes in financial position and notes thereto for the fiscal years ended
on December 31, 1993, 1994, and 1995, all of which (the "Audited Financial
Statements") are accompanied by the related audit opinion(s) of the Company's
independent certified public accountants. The Audited Financial Statements,
including, without limitation, the notes thereto, have been prepared in
accordance with generally accepted accounting principles applied on a consistent
basis throughout the fiscal years covered by such statements (except as may be
stated in the notes to such statements or the related report(s) of such
accountants). The Company has delivered to Synopsys the Company's unaudited
consolidated balance sheet as of March 31, 1996, and the related statement of
operations for the fiscal quarter ended on March 31, 1996 (the "Unaudited
Financial Statements" and, together with the Audited Financial Statements, the
"Financial Statements"). The Unaudited Financial Statements have been prepared
in accordance with generally accepted accounting principles applied on the same
basis as applied in the Audited Financial Statements, except that the Unaudited
Financial Statements (i) are subject to normal year-end adjustments, which
adjustments will not individually or on the aggregate be material, and (ii) do
not contain all footnotes required under generally accepted accounting
principles. The Financial Statements present fairly the Company's financial
condition, results of operations and changes in financial position as of the
dates and for the periods indicated. Except as otherwise disclosed herein or in
Financial Statements, since March 31, 1996, there has not been:

                                       -4-
<PAGE>   5
               (a)   any change in the assets, liabilities, financial condition
or operations of the Company from that reflected in the Financial Statements
except changes in the ordinary course of business that have not, individually or
in the aggregate, had a Material Adverse Effect on the Company;

               (b)   any change, except in the ordinary course of business, in
the contingent obligations of the Company that would be required by generally
accepted accounting principles to be reflected in the Financial Statements if
the Financial Statements were prepared as of and for the period ended on the
date of this agreement;

               (c)   any damage, destruction or loss, whether or not covered by
insurance, that had a Material Adverse Effect on the Company;

               (d)   any declaration or payment of any dividend or other
distribution of the assets of the Company;

               (e)   any labor organization activity; or

               (f)   to the best of the Company's knowledge, any other events or
conditions of any character that, individually or in the aggregate, have had a
Material Adverse Effect on the Company.

          2.9   Litigation . There is no action, suit, proceeding or
investigation pending or, to the best knowledge of the Company and the Selling
Stockholders, currently threatened against (i) the Company or any of its
employees or prospective employees to whom the Company has issued an offer
letter that is outstanding as of the date of this agreement ("Proposed
Employees") that questions the validity of any of the Transaction Documents or
the right of the Company to enter into any of them or to consummate the
transactions contemplated thereby, or (ii) the Company or any of its employees
or Proposed Employees that might result, either individually or in the
aggregate, in any Material Adverse Effect on the Company or any change in the
current equity ownership of the Company, nor, to the best knowledge of the
Company and the Selling Stockholders, is there any valid basis for the
foregoing. The foregoing includes, without limitation, actions pending or
threatened (or any valid basis therefor known to the Company or the Selling
Stockholders) involving the prior employment of any of the Company's employees
or Proposed Employees, their use in connection with the Company's business of
any information or techniques allegedly proprietary to any of their former
employers, or their obligations under any agreements with prior employers. The
Company is not a party or subject to the provisions of any order, writ,
injunction, judgment or decree of any court or government agency or
instrumentality. There is no action, suit, proceeding or investigation by the
Company currently pending or that the Company currently intends to initiate. To
the best knowledge of the Company and the Selling Stockholders, none of the
employees or Proposed Employees of the Company is obligated under any contract
(including, without limitation, licenses, covenants or commitments of any
nature) or other agreement, or subject to any judgment, decree or order of any 

                                       -5-
<PAGE>   6
court or administrative agency, that interferes with the use of his or her best
efforts to promote the interests of the Company, or that conflicts with the
business of the Company as currently conducted and as proposed to be conducted.

          2.10  Offering . Subject in part to the accuracy of Synopsys'
representations set forth in Section 4, the offer, issuance and sale of the
Shares as contemplated by this agreement is exempt from the registration
requirements of the Securities Act of 1933, as amended (the "Securities Act"),
and the registration, qualification or compliance requirements of any applicable
blue sky or other state securities laws.

          2.11   Registration Rights . Other than as granted pursuant to the
Transaction Documents and that certain Rights Agreement dated May 11, 1995,
among the Company and certain investors, the Company has not granted any
currently outstanding rights to register (as that term is defined in the
Investor Rights Agreement), or agreed to grant any rights to register, its
securities to any entity.

          2.12   Disclosure . No representation or warranty by the Company in
the Transaction Documents, or in any document or certificate furnished or to be
furnished to Synopsys pursuant thereto or in connection with the transactions
contemplated thereby, when taken together, contains, or in the case of documents
and certificates to be furnished subsequent to the date of this agreement will
contain, any untrue statement of a material fact or omits, or in the case of
documents and certificates to be furnished subsequent to the date of this
agreement will omit to state, a material fact necessary to make the statements
made herein and therein, in the light of the circumstances under which they were
made, not misleading.

                                    SECTION 3

     Additional Representations and Warranties of the Selling Stockholders .

          Each of the Selling Stockholders, severally and not jointly,
represents and warrants to Synopsys as follows:

          3.1   Ownership . Such Selling Stockholder is the owner, beneficially
and of record, of all the Shares to be sold to Synopsys by such Selling
Stockholder pursuant to this agreement and holds such Shares free and clear of
any liens, encumbrances, security agreements, options, claims, charges or
restrictions of any nature whatsoever except for restrictions imposed by state
and federal securities laws.

          3.2   Authority . Such Selling Stockholder has the full legal power 
and authority to sell and deliver such Selling Stockholder's Shares as provided
in this agreement. The Transaction Documents, upon execution and delivery by the
Company, and, to the extent that they are parties thereto, the Selling
Stockholders, and assuming the due and proper execution and delivery by
Synopsys, constitute legal, valid and binding obligations of such Selling
Stockholder, enforceable in accordance

                                       -6-
<PAGE>   7
with their respective terms, except as may be limited by (x) applicable
bankruptcy, insolvency, reorganization or other laws of general application
relating to or affecting the enforcement of creditors rights generally, and (y)
the effect of rules of law governing the availability of equitable remedies.

          3.3   Title . The delivery of the certificates representing such 
Selling Stockholder's Shares pursuant to this agreement will convey marketable
title to such shares, free and clear of any security interests, claims, liens,
equities or other encumbrances.

          3.4   Investigation; Access to Information . Such Selling Stockholder
acknowledges that he has investigated the business, financial condition and
prospects of the Company and has had access to such information concerning the
Company's business and prospects as he has deemed necessary or desirable to
reach an informed and knowledgeable decision to enter into this agreement and to
sell his Shares in accordance with the terms hereof. Such Selling Stockholder's
decision has not been based upon any representation or warranty made by the
Company or by any officer, director, employee or agent of the Company, with
respect to any matter including, without limitation: (i) any projected or
estimated future financial performance of the Company, or (ii) any estimate of
the current or future value of the Common Stock.

          3.5   Disclosure . No representation or warranty by such Selling
Stockholder in the Transaction Documents, or in any document or certificate
furnished or to be furnished to Synopsys pursuant thereto or in connection with
the transactions contemplated thereby, when taken together, contains, or in the
case of documents and certificates to be furnished subsequent to the date of
this agreement will contain, any untrue statement of a material fact or omits,
or in the case of documents and certificates to be furnished subsequent to the
date of this agreement will omit, to state a material fact necessary to make the
statements made herein and therein, in the light of the circumstances under
which they were made, not misleading.


                                    SECTION 4

   Representations and Warranties of Synopsys; Legends; Transfer Restrictions

          4.1   Representations and Warranties of Synopsys . Synopsys represents
and warrants to the Company and each of the Selling Stockholders as follows:

                (a) Synopsys is a corporation duly organized, validly existing
and in good standing under the laws of the State of Delaware.

                (b) Synopsys has all requisite corporate power and authority to
execute and deliver, and to consummate the transactions contemplated by, the
Transaction Documents. All corporate action on the part of Synopsys, its
officers, directors and stockholders necessary for (i) the execution and
delivery of, and the consummation of the transactions contemplated by, the
Transaction

                                       -7-
<PAGE>   8
Documents, and (ii) the performance of all obligations of Synopsys under the
Transaction Documents, has been taken. The Transaction Documents, upon execution
and delivery by Synopsys and assuming the due and proper execution and delivery
by the Company and, to the extent they are parties thereto, the Selling
Stockholders, constitute legal, valid and binding obligations of Synopsys,
enforceable in accordance with their respective terms, except as may be limited
by (i) applicable bankruptcy, insolvency, reorganization or other laws of
general application relating to or affecting the enforcement of creditors rights
generally, and (ii) the effect of rules of law governing the availability of
equitable remedies.

                (c)   No consent, approval, order or authorization of, or
registration, qualification, designation, declaration or filing with, any
federal, state or local governmental authority on the part of the Company is
required in connection with the execution, delivery and performance of, and the
consummation of the transactions contemplated by, the Transaction Documents,
except for such filings as may be required to be made with the Commission and
the NASD.

                (d)   No consent, approval, waiver or other action by any entity
under any material contract, agreement, indenture, lease, instrument or other
document to which Synopsys is a party or by which it is bound is required or
necessary for the execution, delivery and performance of, or the consummation of
the transactions contemplated by, any of the Transaction Documents by Synopsys.

                (e)   The Shares will be acquired for Synopsys' own account, for
investment and not with a view to, or for resale in connection with, any
distribution or public offering thereof within the meaning of the Securities
Act.

                (f)   Synopsys understands that the Shares have not been
registered under the Securities Act by reason of their issuance in a transaction
exempt from the registration and prospectus delivery requirements of the
Securities Act pursuant to Section 4(2) thereof, that the Company has no present
intention of registering the Securities, that the Shares must be held by
Synopsys indefinitely, and that Synopsys must therefore bear the economic risk
of its investment indefinitely, unless a subsequent disposition thereof is
registered under the Securities Act or is exempt from registration thereunder.

                (g)   Synopsys is an "accredited investor", as that term is
defined in Regulation D promulgated under the Securities Act.

                (h)   Synopsys has received or has had full access to all the
information it considers necessary or appropriate to make an informed investment
decision with respect to the Shares. Synopsys further has had an opportunity to
ask questions and receive answers from the Company regarding the terms and
conditions of the offering of the Shares, and to obtain additional information
(to the extent the Company possessed such information or could acquire it
without unreasonable effort or expense) necessary to verify any information
furnished to Synopsys or to which the Synopsys had access.

                                       -8-
<PAGE>   9
                (i)   Synopsys (i) has experience as an investor in securities
of companies and acknowledges that it is able to fend for itself, can bear the
economic risk of its investment in the Shares and has such knowledge and
experience in financial or business matters that it is capable of evaluating the
merits and risks of this investment in the Shares and protecting its own
interests in connection with this investment and/or (ii) has a preexisting
personal or business relationship with the Company and certain of its officers,
directors or controlling persons of a nature and duration that enables Synopsys
to be aware of the character, business acumen and financial circumstances of
such persons.

          4.2   Legends . Each certificate or instrument representing Shares
shall bear legends in substantially the following forms:

                (a)   "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT
          BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE 'SECURITIES
          ACT') AND ARE 'RESTRICTED SECURITIES' AS DEFINED IN RULE 144
          PROMULGATED UNDER THE SECURITIES ACT. THE SECURITIES MAY NOT BE SOLD
          OR OFFERED FOR SALE OR OTHERWISE DISTRIBUTED EXCEPT (I) IN CONJUNCTION
          WITH AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE
          SECURITIES ACT, OR (II) IN COMPLIANCE WITH RULE 144, OR (III) PURSUANT
          TO AN OPINION OF COUNSEL SATISFACTORY TO THE ISSUER OF THESE
          SECURITIES THAT SUCH REGISTRATION OR COMPLIANCE IS NOT REQUIRED AS TO
          SUCH SALE, OFFER OR DISTRIBUTION."

                (b)   "THE SHARES EVIDENCED BY THIS CERTIFICATE ARE SUBJECT TO
          CERTAIN RESTRICTIONS SPECIFIED IN A CERTAIN INVESTOR RIGHTS AGREEMENT
          BETWEEN THE ISSUER OF THESE SECURITIES AND THE ORIGINAL HOLDER OF SUCH
          SHARES DATED AS OF MAY 6, 1996, A COPY OF WHICH IS AVAILABLE FOR
          EXAMINATION AT THE ISSUER'S PRINCIPAL OFFICE."

                (c)   Any other legends required by California law or other
          applicable blue sky or state securities laws.

The Company need not register a transfer of any Shares, and may also instruct
its transfer agent not to register a transfer of any Shares, unless the
conditions specified in the foregoing legends are satisfied to the extent
applicable.

                                       -9-
<PAGE>   10
          4.3   Removal of Legends and Transfer Restrictions .

                (a)   Any legend endorsed on a certificate or instrument
pursuant to Section 4.2(a) and the stop transfer instructions with respect to
the Shares evidenced thereby shall be removed and the Company shall issue a
certificate or instrument without such legend to the holder thereof if such
Shares are registered under the Securities Act and a prospectus meeting the
requirements of Section 10 of the Securities Act is available, if such legend
may be properly removed under the terms of Rule 144 promulgated under the
Securities Act or if such holder provides the Company with an opinion of counsel
for such holder reasonably satisfactory to legal counsel for the Company to the
effect that a sale, transfer or assignment of such Shares may be made without
registration.

               (b) Any legend endorsed on a certificate or instrument pursuant
to Section 4.2(b) and the stop transfer instructions with respect to the Shares
evidenced thereby shall be removed upon the expiration or earlier termination in
accordance with its terms of the Investor Rights Agreement.

               (c) Any legend endorsed on a certificate or instrument pursuant
to Section 4.2(c) and the stop transfer instructions with respect to the Shares
evidenced thereby shall be removed upon receipt by the Company of an order of
the appropriate state securities authority authorizing such removal, which order
the Company shall seek in a timely manner in those circumstances in which such
order is appropriate in the Company's reasonable opinion.


                                    SECTION 5

                            Covenants of the Parties

          5.1   No Objection . Provided Synopsys is in compliance with and has
performed all covenants, agreements and conditions contained in this agreement
to be performed by Synopsys, the Company shall not interpose any objection or
take any legal action as a plaintiff in connection with the acquisition by
Synopsys of such number of shares of Common Stock as is permitted to be owned by
Synopsys pursuant to the Transaction Documents.

          5.2   Sale of Additional Shares . The Company shall take such action
as is reasonably necessary, subject to compliance with applicable law, to issue
and sell to Synopsys any additional shares which Synopsys shall be entitled to
purchase from the Company pursuant to the Transaction Documents.

          5.3   Equity Method Accounting . If Synopsys desires at some date to
account for its investment in the Company under the equity method, the Company
will furnish to Synopsys all information that is required by generally accepted
accounting principles to enable Synopsys so to account. To the extent reasonably
requested by Synopsys, the Company shall provide information

                                      -10-
<PAGE>   11
regarding the Company to, and otherwise cooperate with, Synopsys so as to enable
Synopsys to prepare financial statements in accordance with accounting
principles generally accepted in the United States and to comply with its
reporting requirements under applicable United States securities laws and
regulations.

          5.4   Publicity . The Company and Synopsys will not, and will not
permit any of their respective affiliates to, issue or cause the issuance of any
press release or other public announcement with respect to the transactions
contemplated by the Transaction Documents without the prior consent of the other
party, except as required to comply with applicable securities laws. None of the
Selling Stockholders will issue or cause the issuance of any such press release
or other public announcement, except in his position as an officer on behalf of
the Company in accordance with the preceding sentence.

          5.5   Securities Law Filings . Synopsys will use reasonable commercial
efforts to make all filings regarding its ownership of the Shares as may
required by applicable securities laws. The Company will use reasonable
commercial efforts promptly to make available to Synopsys any information
regarding the Company necessary to make such filings.

          5.6   Exemption . None of the parties, directly or through any
authorized agent acting on its behalf, will take any action that would cause the
loss of the exemption from registration referred to in Section 2.10.

                                    SECTION 6

                                  Miscellaneous

          6.1   Waivers and Amendments . Neither this agreement nor any
provision hereof may be changed, waived, discharged or terminated orally, but
only by a statement in writing signed by the party against which enforcement of
the change, waiver, discharge or termination is sought.

          6.2   Governing Law . This agreement shall be governed by and 
construed in accordance with the laws of the State of California as such laws
are applied to agreements between California residents entered into and to be
performed entirely within California.

          6.3   Survival . The representations, warranties, covenants and
agreements made herein shall survive the execution of this agreement and the
closing of the transactions contemplated hereby, except that the representations
and warranties of the Company and the Selling Stockholders made in Section 2,
the representations and warranties of the Selling Stockholders made in Section 3
and the representation and warranties of Synopsys made in Section 4 shall expire
on the first anniversary of the date of this agreement.

                                      -11-
<PAGE>   12
          6.4   Successors and Assigns . Except as otherwise expressly provided
herein, the provisions hereof shall inure to the benefit of, and be binding
upon, the successors, assigns, heirs, executors and administrators of the
parties hereto.

          6.5   Entire Agreement . The Transaction Documents and the other
documents delivered pursuant thereto constitute the full and entire
understanding and agreement between the parties with regard to the subjects
thereof.

          6.6   Notices, etc . All notices and other communications required or
permitted hereunder shall be in writing and shall be sent by facsimile,
overnight courier or mailed by certified or registered mail, postage prepaid,
return receipt requested, to the facsimile number or address as follows:

        Company:      Cooper & Chyan Technology, Inc. 1601 South
                      De Anza Boulevard Cupertino, California 95014
                      Telephone: (408) 342-5518 Facsimile: (408)
                      342-5650 Attention: Mr. John R. Harding, President

                      with a copy (which will not constitute notice) to:
                           
                      Fenwick & West
                      Two Palo Alto Square, Suite 800
                      Palo Alto, California 94306
                      Telephone: (415) 494-0600
                      Facsimile: (415) 857-0361 
                      Attention: Gordon Davidson, Esq.
                     
        Selling       c/o Cooper & Chyan Technology, Inc. 
        Stockholders: 1601 South De Anza Boulevard
                      Cupertino, California 95014 
                      Telephone: (408) 342-5518
                      Facsimile: (408) 342-5650
               
        Synopsys:     Synopsys, Inc.
                      700 East Middlefield Road
                      Mountain View, California 94043-4033
                      Telephone: (415) 962-5000
                      Facsimile: (415) 694-4087
                      Attention: Paul Lippe, Vice President, Legal


                                      -12-
<PAGE>   13
                      with a copy (which will not constitute notice) to:

                      Wilson, Sonsini, Goodrich & Rosati 
                      650 Page Mill Road
                      Palo Alto, California 94304-1050 
                      Telephone: (415) 493-9300
                      Facsimile: (415) 493-6811
                      Attention: Thomas C. DeFilipps, Esq.

or to such other facsimile number or address provided to the parties to this
agreement in accordance with this Section 6.6. Such notices or other
communications shall be deemed delivered upon receipt, in the case of overnight
delivery or facsimile transmission (as evidenced by the confirmation thereof),
or 3 days after deposit in the mails (as determined by reference to the
postmark).

          6.7   Severability . In case any provision of this agreement shall be
declared invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions shall not in any way be affected or
impaired thereby.

          6.8   Finder's Fees .

                (a)   The Company and each of the Selling Stockholders (i)
represents and warrants to Synopsys that none of the Company or the Selling
Stockholders has retained any finder or broker in connection with any of the
transactions contemplated by the Transaction Documents, and (ii) agree to
indemnify and to hold Synopsys harmless of and from any liability for any
commission or compensation in the nature of a finder's fee to any broker or
other person or firm (and the costs and expenses of defending against such
liability or asserted liability) for which the Company, or any of its employees
or representatives, or any of the Selling Stockholders are responsible.

                (b)   Synopsys (i) represents and warrants to the Company and 
each of the Selling Stockholders that it has not retained any finder or broker
in connection with the transactions contemplated by the Transaction Documents,
and (ii) agrees to indemnify and to hold the Company and the Selling
Stockholders harmless of and from any liability for any commission or
compensation in the nature of a finder's fee to any broker or other person or
firm (and the costs and expenses of defending against such liability or asserted
liability) for which it, or any of its employees or representatives, are
responsible.

          6.9   Expenses . Each party will bear its own expenses with respect to
the origination, negotiation, documentation and consummation of the transactions
contemplated by the Transaction Documents.

          6.10  Counterparts . This agreement may be executed in any number of
counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

                                      -13-
<PAGE>   14
          6.11  Delays or Omissions . No delay or omission to exercise any 
right, power or remedy accruing to a party upon any breach or default of another
party under this agreement shall impair any such right, power or remedy, nor
shall it be construed to be a waiver of any such breach or default, or any
acquiescence therein, or of or in any similar breach or default thereafter
occurring; nor shall any waiver of any single breach or default be deemed a
waiver of any other breach or default theretofore or thereafter occurring. Any
waiver, permit, consent or approval of any kind or character on a party's part
of any breach or default under this agreement or any waiver on such party's part
of any provisions or conditions of this agreement must be in writing and will be
effective only to the extent specifically set forth in such writing, and all
remedies, either under this agreement, or by law or otherwise afforded to the
parties, will be cumulative and not alternative.

          6.12  Limitation of Liability . Notwithstanding anything to the
contrary in this agreement, the liability of a Selling Stockholder for breaches
of his representations and warranties in Sections 2 and 3, other than breaches
resulting from fraud or willful misrepresentation by such Selling Stockholder,
will be limited to the amount set forth opposite such Selling Stockholder's name
under the caption "Total Purchase Price" on Exhibit A .

                                      -14-
<PAGE>   15
          IN WITNESS WHEREOF, the parties have executed this Stock Purchase
Agreement as of the date first above written.

                                        COOPER & CHYAN TECHNOLOGY, INC.



                                        By: /s/ John R. Harding
                                            ------------------------------------
                                                John R. Harding, President

                                            /s/ John F. Cooper 
                                        ----------------------------------------
                                                John F. Cooper
                                     
                                            /s/ David Chyan
                                        ----------------------------------------
                                                David Chyan

                                            /s/ John R. Harding
                                        ----------------------------------------
                                                John R. Harding

                                            /s/ William Portelli  
                                        ----------------------------------------
                                                William Portelli
 
                                            /s/ Robert D. Selvi
                                        ----------------------------------------
                                                Robert D. Selvi


                                        SYNOPSYS, INC.

                                      

                                        By:  /s/ Paul Lippe
                                           -------------------------------------

                                        Name:    Paul Lippe
                                              ----------------------------------
                                    
                                        Title:   VP, Business Development
                                               ---------------------------------


                                      -15-
<PAGE>   16
                                    EXHIBIT A

                              Selling Stockholders
<TABLE>
<CAPTION>
                                    No. of        Price          Total
     Name                         Shares Sold   Per Share    Purchase Price
     ----                         -----------   ---------    --------------
<S>                               <C>           <C>          <C>                
John F. Cooper                      648,250       $14.50      $ 9,399,625       
                                                           
David Chyan                         296,000       $14.50      $ 4,292,000       
John R. Harding                      57,000       $14.50      $   826,500       
                                                           
William Portelli                     22,500       $14.50      $   326,250       
                                                           
Robert D. Selvi                      22,500       $14.50      $   326,250
                                    -------                   -----------       
                                                          
          TOTAL:                  1,046,250                   $15,170,625
                                  =========                   ===========     
</TABLE>
<PAGE>   17
                                    EXHIBIT B

                     Legal Opinion of Counsel to the Company
<PAGE>   18
                                  May 6, 1996

Synopsys, Inc.
700 East Middlefield Road
Mountain View, California 94043-4033

        Re:  Sale of 1,206,542 shares of Common
             Stock of Cooper & Chyan Technology, Inc.
             ----------------------------------------

Ladies and Gentlemen:

        We have acted as counsel for Cooper & Chyan Technology, Inc., a
Delaware corporation (the "Company"), in connection with the sale of an
aggregate of 1,206,542 shares (the "Shares") of the Company's Common Stock
("Common Stock") to be sold on the date hereof, of which 160,292 shares (the
"Company Shares") are to issued and sold by the Company and an aggregate of
1,046,250 shares (the "Selling Stockholder Shares") are to be sold by certain
stockholders of the Company (collectively, the "Selling Stockholders") who are
listed in Exhibit A to that certain Stock Purchase Agreement (the "Purchase
Agreement"), dated May 6, 1996, among the Company, the Selling Stockholders and
Synopsys, Inc., a Delaware corporation ("Synopsys" or "you").

        The Shares are being purchased today by Synopsys pursuant to the terms
of, and this opinion is being delivered to you in connection with, the Purchase
Agreement. Unless otherwise defined in this opinion or the context otherwise
requires, all capitalized terms used in this opinion shall have the meanings
given to such terms in the Purchase Agreement. The Purchase Agreement, together
with the Investor Rights Agreement of even date therewith and referred to
therein, are collectively referred to herein as the "Investment Agreements."

        To render this opinion, we have examined the documents referred to, and
made the investigation described, below. We have not independently verified any
information obtained from third persons. As to matters of fact, we have relied
solely upon our actual knowledge, the information obtained from public
officials and public records that is set forth below, and representations
contained in the Purchase Agreement or made by representatives of the Company,
including, without limitation, those representations set forth in the
Management Certificate referred to below. The documents we have examined in
rendering this opinion, and upon which we have relied, are the following:

        (a)  The Certificate of Incorporation of the Company, as filed with the
Secretary of State of Delaware on August 9, 1995.

<PAGE>   19
Synopsys, Inc.
May 6, 1996
Page 2

     (b) The Company's Certificate of Designation of Series A Preferred Stock,
as filed with the Secretary of State of the State of Delaware on August 24,
1995, and as amended by the Company's Certificate of Elimination filed with the
Secretary of State of the State of Delaware on November 6, 1995.

     (c) The Bylaws of the Company, as amended, certified to be true and correct
by the Secretary of the Company on November 8, 1995.

     (d) The minutes of meetings and actions by written consent of the
stockholders and Board of Directors of the Company and its predecessor, Cooper &
Chyan Technology, Inc., a California corporation ("CCT California"), contained
as of the date of this opinion in the minute books of the Company and CCT
California in our possession.

     (e) The Agreement and Plan of Merger dated as of September 25, 1995 between
the Company and CCT California.

     (f) A certificate of good standing from the Office of the Secretary of
State of the State of Delaware dated as of April 29, 1996.

     (g) The Purchase Agreement.

     (h) The Investor Rights Agreement.

     (i) The other certificates and documents delivered by or on behalf of the
Company, the Selling Stockholders and Synopsys at the Closing.

     (j) A Management Certificate addressed to us executed by the Company dated
May 6, 1996, a copy of which has been delivered to your counsel.

     In our examination, we have assumed, and express no opinion as to, the
authenticity of all documents submitted to us as originals, the genuineness of
all signatures on original documents, the genuineness of certificates of public
officials, the conformity to original documents of all documents submitted to us
as copies thereof, the completeness of all documents submitted to us, the lack
of any undisclosed terminations, modifications, waivers or amendments to any
agreements or documents reviewed by us and (except with respect to the execution
and delivery by the Company of the Investment Agreements) the due and valid
execution and delivery of all documents by all parties thereto where due
execution and delivery are prerequisites to the effectiveness thereof. In
rendering this opinion we have also assumed the validity of all signatures of
the Selling Stockholders and the legal competency and capacity of each of the
Selling Stockholders to make and enter into contracts, and for all other
purposes.

     For the purposes of this opinion, we have also assumed that (a) Synopsys
has all requisite power and authority, and has taken any and all corporate or
other action necessary, for the due authorization by Synopsys of the execution
and delivery of the Investment Documents and the performance by Synopsys of all
its obligations thereunder, (b) Synopsys has paid for all

<PAGE>   20
Synopsys, Inc.
May 6, 1996
Page 3


the Shares as provided in the Purchase Agreement and has fully performed all
the other obligations that Synopsys is to perform under the Purchase Agreement
at or before the Closing, and (c) the representations and warranties of
Synopsys in the Purchase Agreement are true and complete.

        A matter stated in this opinion to be "to our knowledge," refers only
to the knowledge of those attorneys currently within the firm who have
furnished legal services to the Company in connection with the Purchase
Agreement and the transactions contemplated therein, and is so stated to
reflect the fact that, while nothing has come to our attention that causes us
to believe that the matter stated is factually inaccurate (based on information
we have as a result of representing the Company in connection with the Purchase
Agreement and the transactions contemplated therein), we have made no
independent factual investigation with respect to such statement or matter
other than as described above.

        The opinions expressed below are also qualified by, subject to, and we
render no opinion with respect to, the limitations and exceptions to the
enforceability of or the binding nature of contracts and obligations in
general, including, without limitation: (a) the effect of bankruptcy,
insolvency, reorganization, arrangement, moratorium, fraudulent conveyance and
other similar laws relating to or affecting the rights of creditors generally;
(b) the effect of general principles of equity and similar principles,
including, without limitation, concepts of materiality, reasonableness, good
faith, fair dealing and unconscionability; (c) the possible unavailability of
the remedies of specific performance, injunctive relief or other equitable
remedies, regardless of whether considered in a proceeding in equity or at law,
and the effect of public policy; (d) the validity, legality or enforceability
of the indemnification provisions of the Investor Rights Agreement; and (e)
compliance by the Company, the Selling Stockholders or Synopsys with antifraud
provisions of applicable state and federal statutes, rules and regulations
concerning the issuance or sale of securities.

        We are admitted to practice law in the State of California, and we
express no opinion herein as to any laws other than the existing laws of the
State of California, the General Corporation Law of the State of Delaware and
the existing federal securities laws of the United States, and we express no
opinion with respect to the application or effect of the laws of any other
jurisdiction. 

        In rendering the opinions below, we are opening only as to the specific
legal issues expressly set forth herein, and no opinion shall be inferred as to
any other matters.

        We also call your attention to the fact that under various reports
published by committees of the State Bar of California, certain assumptions,
qualifications and exceptions are implicit in opinions of lawyers. Although we
have expressly set forth certain assumptions, qualifications and exceptions
herein, we are not limiting or omitting any others set forth in the various
reports or otherwise deemed standard for practice by lawyers in the State of
California. 

<PAGE>   21
Synopsys, Inc.
May 6, 1996
Page 4

     Based upon and subject to the foregoing, and subject to the qualifications
and exceptions contained herein, we are of the opinion that:

     1. The Company has been duly organized and is validly existing as a
corporation in good standing under the laws of the State of Delaware and has the
requisite corporate power to carry on its business as now conducted.

     2. The Company has all requisite corporate power and corporate authority to
execute and deliver the Investment Agreements, to sell and issue the Company
Shares, and to otherwise carry out and perform its obligations under the terms
of the Investment Agreements.

     3. The Investment Agreements have been duly and validly authorized,
executed and delivered by the Company, and each constitutes a valid and binding
agreement of the Company, enforceable against the Company in accordance with its
respective terms.

     4. The Company Shares have been duly authorized and will be validly issued,
fully paid and non-assessable when issued and paid for as contemplated by the
Purchase Agreement. The Selling Stockholder Shares have been duly authorized and
validly issued and are non-assessable and are, to our knowledge, fully paid.

     5. The offer and sale of the Shares are (i) exempt from the registration
provisions of the Securities Act of 1933, as amended, and (ii) exempt from the
qualification requirements of the California Corporate Securities Law of 1968,
as amended.

     This opinion is furnished to you by us as counsel for the Company, is
intended solely for your use and benefit in connection with the Purchase
Agreement and is not to be made available to or relied upon by you for any other
purpose or by other persons or entities, whether or not named in the Purchase
Agreement, without our prior written consent. This opinion is given as of the
date first written above. We assume no obligation to advise you of facts,
circumstances, events or changes in the law that may hereafter be brought to our
attention that may alter, affect or modify the opinions expressed herein.


                                             Very truly yours,

                                             FENWICK & WEST

                                             By:
                                                 -----------------------------

<PAGE>   1
                                                                    EXHIBIT 4.02
                     
                            INVESTOR RIGHTS AGREEMENT

          This INVESTOR RIGHTS AGREEMENT is made as of May 6, 1996, by COOPER &
CHYAN TECHNOLOGY, INC., a Delaware corporation (the "Company"), SYNOPSYS, INC, a
Delaware corporation ("Synopsys"), and, solely for purposes of Sections 7.1, 7.2
and 9, JOHN F. COOPER, DAVID CHYAN, JOHN R. HARDING, WILLIAM PORTELLI and ROBERT
D. SELVI, individuals (the "Selling Stockholders").

                                    Recitals

          The Company and the Selling Stockholders propose to sell to Synopsys,
and Synopsys desires to purchase, in aggregate 1,206,542 shares of the Company's
Common Stock pursuant to a Stock Purchase Agreement dated as of even date
herewith, as it may be amended (the "Purchase Agreement") and in connection
therewith desire to enter into this agreement.

          NOW, THEREFORE, the parties, intending to be legally bound, hereby
agree as follows:

                                    SECTION 1

                               Certain Definitions

          As used in this agreement:

          1.1   "Acquisition" means any of the events set forth in Section 7.1
(a) and (b).

          1.2   "Common Stock" means the Common Stock of the Company, par value
$0.01 per share.

          1.3   "Dilutive Securities" shall mean any Voting Stock, whether now
authorized or not; provided, however, that the term "Dilutive Securities" does
not include:

                (a)   any shares of Common Stock issued under the Purchase
Agreement;

                (b)   any securities issued in connection with any stock split,
stock dividend or similar event in which Synopsys is entitled to participate on
a pro rata basis;

                (c)   any securities for which the issuance gave rise to the 
Right of Participation (regardless of whether any such right was exercised); and

                (d)   any securities issuable upon the exercise, conversion or
exchange of any securities described in Section 1.3(b) or (c) above.

          1.4   The terms "Holder" and "Holders" mean any person or persons,
respectively, to whom Registrable Securities have been or will be originally
issued and/or sold and who execute and deliver this agreement and qualifying
transferees under Section 2.8 who hold Registrable Securities. As of the date of
this agreement, Synopsys is a Holder.

                                      
<PAGE>   2
          1.5   "Initiating Holder(s)" means any Holder or Holders of in 
aggregate at least 25% of the Registrable Securities that have not been resold
to the public in a registered public offering, so long as such Holder or Holders
hold in aggregate at least 50,000 Registrable Securities.

          1.6   "Market Price" means, with respect to any securities of the
Company on a given day, the closing price quoted on the Nasdaq National Market,
or, if the securities are then traded on a national securities exchange, the
last sale price on such day, or, if on such day such security is not quoted on
the Nasdaq National Market or a national securities exchange, the Market Price
shall be the fair value thereof determined jointly by the Company and Synopsys.

          1.7   "New Securities" means any Voting Stock, whether now authorized
or not, and rights, options or warrants to purchase such Voting Stock, and
securities of any type whatsoever that are, or may become, convertible or
exchangeable into such Voting Stock; provided, however, that the term "New
Securities" does not include:

                (a) any shares of the Company's Common Stock (and/or options or
warrants therefor) issued to employees, officers, directors, contractors,
advisors or consultants of the Company pursuant to incentive agreements or
incentive plans approved by the Board of Directors of the Company;

                (b)   any shares of Common Stock issued under the Purchase
Agreement;

                (c)  up to 5,409 shares of Common Stock purchased by Synopsys
pursuant to the first Maintenance Notice;

                (d)   any securities issued in connection with any stock split,
stock dividend or other similar event in which Synopsys is entitled to
participate on a pro rata basis;

                (e)   any securities issued upon the exercise, conversion or
exchange of any outstanding security, if such outstanding security constituted a
New Security; and

                (f)   any securities issued pursuant to the acquisition of
another entity by the Company by consolidation, merger, purchase of assets, or
other reorganization in which the Company acquires, in a single transaction or
series of related transactions, substantially all of the assets of such other
entity or 50% or more of the voting power of such other entity or 50% or more of
the equity ownership of such other entity.

          1.8   "Other Registrable Securities" means all shares that are
Registrable Securities, as that term is defined in that certain Rights Agreement
dated May 11, 1995, among the Company and certain investors.

          1.9   Synopsys' "Prior Percentage Interest" means, with respect to a
Maintenance Notice (as defined in Section 5.4), the ratio of:



                                       -2-
<PAGE>   3
                (a)   (i) the number of shares of Common Stock held by Synopsys 
as of the date of such Maintenance Notice that Synopsys purchased pursuant to
(x) the Purchase Agreement, (y) prior exercises of the Right of Participation,
or (z) prior exercises of the Right of Maintenance, plus (ii) with respect to
the first Maintenance Notice only, 5,409 shares of Common Stock, to

                (b)   the difference between (i) the total number of shares of
Voting Stock outstanding on the date of such Maintenance Notice, and (ii) the
total number of Dilutive Securities issued since the later of the date of this
agreement or, if applicable, the date of the last Maintenance Notice, excluding
any Maintenance Securities, as defined in Section 5.1, issued pursuant to the
last Maintenance Notice.

          1.10  "Pro Rata Share" means the ratio of:

                (a)   (i) the number of shares of Common Stock then held by
Synopsys that Synopsys purchased pursuant to (x) the Purchase Agreement, (y)
prior exercises of the Right of Participation, or (z) prior exercises of the
Right of Maintenance, plus (ii) until the earlier of the date on which Synopsys
first purchases Maintenance Securities or the date 15 days after Synopsys
receives its first Maintenance Notice, 5,409 shares of Common Stock, to

                (b)   the difference between (i) the total number of shares of
Voting Stock then outstanding (immediately prior to the issuance of New
Securities giving rise to the Right of Participation), and (ii) the number of
Dilutive Securities issued since the date of the last Maintenance Notice,
excluding any Maintenance Securities issued pursuant to the last Maintenance
Notice.

          1.11  The terms "register", "registered" and "registration" refer to
a registration effected by preparing and filing a registration statement in
compliance with the Securities Act and the declaration or ordering of the
effectiveness of such registration statement.

         1.12   "Registrable Securities" means any and all shares of Common
Stock of the Company that have not been resold to the public that are (i) sold
to the Holder by the Company or the Selling Stockholders pursuant to the
Purchase Agreement, (ii) not more than 5,409 shares of Common Stock sold to the
Holder by the Company pursuant to the first Maintenance Notice, (iii) issued or
issuable with respect to or in any exchange for or replacement of securities
referred to in this sentence, or (iv) issued or issuable in respect of
securities referred to in this sentence as a result of a stock split, stock
dividend or the like.

          1.13  "Securities Act" means the Securities Act of 1933, as amended.

          1.14  "Voting Power" of any Voting Stock, as defined below, means the
number of votes such Voting Stock is entitled to cast for the election of
directors of the Company (other than votes that may be cast only upon the
happening of a contingency).

          1.15  "Voting Stock" means the Common Stock and any other securities
issued by the Company having the ordinary power to vote in the election of
directors of the Company (other than securities having such power only upon the
happening of a contingency).


                                       -3-
<PAGE>   4
                                    SECTION 2

                               Registration Rights

          2.1   Requested Registration.

                (a)   Request for Registration. Initiating Holders of
Registrable Securities shall have the right to request an unlimited number of
registrations on Form S-3 (such requests shall be in writing and shall state the
number of Registrable Securities to be disposed of and the intended method of
disposition of such Registrable Securities by such Holder), on the terms and
subject to the conditions of this Section 2. In case the Company shall receive
from the Initiating Holder(s) a written request that the Company effect any
registration with respect to all or a part of the Registrable Securities, the
Company will:

                         (i)   within 10 days after the receipt thereof give
written notice of the proposed registration to all other Holders; and

                         (ii)  as soon as practicable, use its best efforts to
effect all such registrations (including, without limitation, the execution of
an undertaking to file post-effective amendments, appropriate qualifications
under the applicable blue sky or other state securities laws and appropriate
compliance with exemptive regulations issued under the Securities Act and any
other governmental requirements or regulations) as may be so requested and as
would permit or facilitate the sale and distribution of all or such portion of
such Holder's or Holders' Registrable Securities as are specified in such
request, together with all or such portion of the Registrable Securities of any
Holder or Holders joining in such request as are specified in a written request
given within 20 days after receipt of such written notice from the Company;

provided, however, that the Company shall not be obligated to take any action to
effect such registration pursuant to this Section 2:

                         (w)   if Form S-3 is not available for such offering by
the Holders(s);

                         (x)   if the Holder or Holders requesting registration
propose to dispose of Registrable Securities having an aggregate disposition
price (before deduction of underwriting discounts and expenses of sale) less
than $1,500,000;

                         (y)   with respect to more than two registrations
pursuant to this Section 1.2 in any 12-month period; or

                         (z)   if the Company shall furnish to the Holder(s) a
certificate signed by the President of the Company certifying that, in the good
faith judgment of the Board of Directors of the Company, it would be seriously
detrimental to the Company and its stockholders for such registration on Form
S-3 to be effected at such time, in which event the Company shall have the right
to defer the filing of the Form S-3 registration statement no more than once
during any twelve-month period for a period of not more than 90 days.


                                       -4-
<PAGE>   5
Subject to the foregoing clauses (w), (x), (y) and (z), the Company shall file a
registration statement covering the Registrable Securities so requested to be
registered as soon as practical, but in any event not later than 90 days after
receipt of the request or requests of the Initiating Holder(s).

                (b)   Underwriting. If the Initiating Holder(s) intend to
distribute the Registrable Securities covered by their request by means of an
underwriting, they shall so advise the Company as a part of their request made
pursuant to Section 2.1 and the Company shall include such information in the
written notice referred to in Section 2.1(a)(i). In such event, if so requested
in writing by the Company, the Initiating Holder(s) shall negotiate in good
faith with an underwriter or underwriters selected by the Company with regard to
the underwriting of such requested registration; provided, however, that if a
majority in interest of the Initiating Holder(s) have not agreed with such
underwriter or underwriters as to the terms and conditions of such underwriting
within 20 days following commencement of such good faith negotiations, a
majority in interest of the Initiating Holder(s) may select a an underwriter or
underwriters of their choice, at least one of which will be a nationally
recognized underwriter. The right of any Holder to registration pursuant to
Section 1.2 shall be conditioned upon such Holder's participation in such
underwriting and the inclusion of such Holder's Registrable Securities in the
underwriting (unless otherwise mutually agreed by a majority in interest of the
Initiating Holder(s) and such Holder) to the extent provided herein. The Company
shall (together with all Holders proposing to distribute their securities
through such underwriting) enter into an underwriting agreement in customary
form with the underwriter or underwriters selected for such underwriting.

          2.2   Company Registration.

                (a)   Notice; Inclusion of Registrable Securities. If at any
time or from time to time the Company proposes to register any of its
securities, for its own account or the account of any of its stockholders other
than the Holders, other than a registration relating solely to employee stock
option or purchase plans, or a registration on Form S-4 relating solely to a
transaction under Rule 145 promulgated under the Securities Act, or a
registration on any other form (other than Form S-1, S-2 or S-3, or their
successor forms) or any successor to such forms, which does not include
substantially the same information as would be required to be included in a
registration statement covering the sale of Registrable Securities, the Company
will:

                         (i)   promptly give to each Holder written notice
thereof (which shall include a list of the jurisdictions in which the Company
intends to attempt to qualify such securities under the applicable blue sky or
other state securities laws); and

                         (ii)   include in such registration (and any related
qualification under applicable blue sky or other state securities laws, or other
compliance), and in any underwriting involved therein, all the Registrable
Securities specified in a written request or requests, made within 30 days after
receipt of such written notice from the Company, by any Holder or Holders to be
included in any such registration, except as set forth in Section 2.2(b) below.

                (b)   Underwriting. If the registration of which the Company
gives notice is for a registered public offering involving an underwriting, the
Company shall so advise the Holders as a part of the written notice given
pursuant to Section 2.2(a)(i). In such event, the right of any Holder


                                       -5-
<PAGE>   6
to registration pursuant to Section 2.2 shall be conditioned upon such Holder's
participation in such underwriting and the inclusion of such Holder's
Registrable Securities in the underwriting to the extent provided herein. All
Holders proposing to distribute their securities through such underwriting shall
(together with the Company and the other holders distributing their securities
through such underwriting) enter into an underwriting agreement in customary
form with the underwriter or underwriters selected for such underwriting by the
Company. Notwithstanding any other provision of this Section 2.2, if the
underwriter determines that marketing factors require a limitation of the number
of shares to be underwritten, the underwriter may limit the number of
Registrable Securities to be included in the registration and underwriting. In
the event a cutback of the number of Registrable Securities to be included in
the registration and underwriting is deemed necessary by the underwriter, the
Company shall advise all Holders of Registrable Securities which would otherwise
be registered and underwritten pursuant hereto. The number of Registrable
Securities and Other Registrable Securities that may be included in the
registration and underwriting shall be allocated among all of such Holders and
holders of Other Registrable Securities, in proportion, as nearly as
practicable, to the respective amounts of Registrable Securities and Other
Registrable Securities held by each such Holder or holder and proposed to be
included in the offering. Notwithstanding the foregoing, in no event shall the
amount of securities of the selling Holders and holders of Other Registrable
Securities included in the offering be reduced below 30% of the total amount of
the securities included in such offering. If any Holder disapproves of the terms
of any such underwriting, such Holder may elect to withdraw therefrom by written
notice to the Company and the underwriters. Any Registrable Securities excluded
or withdrawn from such underwriting shall be withdrawn from such registration.

          2.3   Expenses of Registration. All expenses incurred in connection 
with any registration, qualification or compliance pursuant to this agreement,
including without limitation, all registration, filing and qualification fees,
printing expenses, fees and disbursements of counsel for the Company and
expenses of any special audits incidental to or required by such registration,
shall be borne by the Company, except as follows:

                (a)   the Company shall not be required to pay for expenses of
any registration proceeding begun pursuant to Section 2.1, the request for which
has been subsequently withdrawn by the Initiating Holder(s), in which such case
such expenses shall be borne by the Holder(s) requesting such withdrawal;
provided, however, that if at the time of such withdrawal, the Holder(s) have
learned of a material adverse change in the condition, business or prospects of
the Company from that known to the Holder(s) at the time of their request, then
the Company shall be required to pay such expenses and the Holder(s) shall
retain their rights pursuant to Section 2.1; and

                (b)   the Company shall not be required to pay underwriters'
fees, discounts or commissions relating to Registrable Securities or fees of
legal counsel to any Holder, except for a single counsel acting on behalf of all
selling Holders (which counsel shall be selected by such Holders) with respect
to the first registration effected pursuant to Section 2.1.

          2.4   Registration Procedures. In the case of each registration,
qualification or compliance effected by the Company pursuant to this agreement,
the Company will keep each Holder participating therein advised in writing as to
the initiation of each registration, qualification and compliance and as to the
completion thereof. At its expense the Company will:


                                       -6-
<PAGE>   7
                (a)   keep such registration, qualification or compliance
pursuant to Section 2.1 or 2.2 effective for a period of 45 days or until the
Holder or Holders have completed the distribution described in the registration
statement relating thereto, whichever first occurs;

                (b)   furnish to the Holder such numbers of copies of a
prospectus, including a preliminary prospectus, in conformity with the
requirements of the Securities Act, and such other documents as they may
reasonably request in order to facilitate the disposition of the Registrable
Securities owned by them that are included in such registration;

                (c)   notify each Holder of Registrable Securities covered by 
such registration statement at any time when a prospectus relating thereto is
required to be delivered under the Securities Act of the happening of any event
as a result of which the prospectus included in such registration statement, as
then in effect, includes an untrue statement of a material fact or omits to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading in the light of the circumstances then
existing; and

                (d)   furnish, at the request of any Holder requesting
registration of Registrable Securities pursuant to this agreement, on the date
that such Registrable Securities are delivered to the underwriters for sale in
connection with a registration pursuant to this agreement, if such securities
are being sold through underwriters, or, if such securities are not being sold
through underwriters, on the date that the registration statement with respect
to such securities becomes effective, (i) a copy of an opinion, dated such date,
of the counsel representing the Company for the purposes of such registration,
in form and substance as is customarily given to underwriters in an underwritten
public offering, addressed to the underwriters, if any, and (ii) a copy of a
letter dated such date, from the independent certified public accountants of the
Company, in form and substance as is customarily given by independent certified
public accountants to underwriters in an underwritten public offering, addressed
to the underwriters, if any.

          2.5   Indemnification.

                (a)   The Company will indemnify and hold harmless each Holder
of Registrable Securities, each of its officers, directors, partners, agents and
representatives, and each person controlling such Holder, with respect to which
such registration, qualification or compliance has been effected pursuant to
this agreement, and each underwriter, if any, and each person who controls any
underwriter of the Registrable Securities held by or issuable to such Holder,
against all claims, losses, expenses, damages and liabilities (or actions in
respect thereof) arising out of or based on any untrue statement (or alleged
untrue statement) of a material fact contained in any preliminary or final
prospectus, offering circular or other document (including any related
registration statement, notification or the like) incident to any such
registration, qualification or compliance, or based on any omission (or alleged
omission) to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, or any violation or
alleged violation by the Company relating to action or inaction required of the
Company in connection with any rule or regulation promulgated under the
Securities Act or any blue sky or other state securities law applicable to the
Company and will reimburse (promptly after the incurrence of such expense) each
such Holder, each of its officers, directors, partners, agents and
representatives and each person controlling such Holder, each such underwriter
and each person who controls any such underwriter,


                                       -7-
<PAGE>   8
for any reasonable legal and any other expenses incurred in connection with
investigating, defending or settling any such claim, loss, damage, liability or
action; provided, however, that the Company will not be liable in any such case
to the extent that any such claim, loss, damage or liability arises out of or is
based on any untrue statement or omission based upon written information
furnished to the Company by an instrument duly executed by such Holder or
underwriter specifically for use therein; provided further, however, that the
agreement of the Company to indemnify any underwriter and any person who
controls such underwriter contained herein with respect to any such preliminary
prospectus shall not inure to the benefit of any underwriter from whom the
person asserting any such claim, loss, damage, liability or action purchased the
stock which is the subject thereof, if at or prior to the written confirmation
of the sale of such stock, a copy of the prospectus (or the prospectus as
amended or supplemented) was not sent or delivered to such person, excluding the
documents incorporated therein by reference, and the untrue statement or
omission of a material fact contained in such preliminary prospectus was
corrected in the prospectus (or the prospectus as amended or supplemented).

                (b)   Each Holder will, if Registrable Securities held by or
issuable to such Holder are included in the securities as to which such
registration, qualification or compliance is being effected, indemnify and hold
harmless the Company, each of its directors and officers, agents and
representatives, each underwriter, if any, of the Company's securities covered
by such a registration statement, each person who controls the Company within
the meaning of the Securities Act, and each other such Holder, each of its
officers, directors and partners, agents and representatives, and each person
controlling such Holder, against all claims, losses, expenses, damages and
liabilities (or actions in respect thereof) arising out of or based on any
untrue statement (or alleged untrue statement) of a material fact contained in
any preliminary or final prospectus, offering circular or other document
(including any related registration statement, notification or the like)
incident to any such registration, qualification or compliance or based on any
omission (or alleged omission) to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, and
will reimburse (promptly after the incurrence of such expense) the Company, such
Holder, such directors, officers, partners, persons or underwriters for any
reasonable legal or any other expenses incurred in connection with
investigating, defending or settling any such claim, loss, damage, liability or
action, in each case to the extent, but only to the extent, that such untrue
statement (or alleged untrue statement) or omission (or alleged omission) is
made in such registration statement, prospectus, offering circular or other
document in reliance upon and in conformity with written information furnished
to the Company by an instrument duly executed by such Holder specifically for
use therein; provided, however, that the agreement of the Holder to indemnify
any underwriter and any person who controls such underwriter contained herein
with respect to any such preliminary prospectus shall not inure to the benefit
of any underwriter from whom the person asserting any such claim, loss, damage,
liability or action purchased the stock which is the subject thereof, if at or
prior to the written confirmation of the sale of such stock, a copy of the
prospectus (or the prospectus as amended or supplemented) was not sent or
delivered to such person, excluding the documents incorporated therein by
reference, and the untrue statement or omission of a material fact contained in
such preliminary prospectus was corrected in the prospectus (or the prospectus
as amended or supplemented); provided further, however, that in no event shall
the indemnification provided by any Holder hereunder exceed the net proceeds
received by such Holder for the sale of such Holder's Registrable Securities
pursuant to such registration.


                                       -8-
<PAGE>   9
                (c)   Each party entitled to indemnification under this Section
2.5 (the "Indemnified Party") shall give notice to the party required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the Indemnifying Party to assume the defense of any such claim or any
litigation resulting therefrom; provided, however, that counsel for the
Indemnifying Party, who shall conduct the defense of such claim or litigation,
shall be approved by the Indemnified Party (whose approval shall not be
unreasonably withheld), and the Indemnified Party may participate in such
defense at such party's expense; provided further, however, that the failure of
any Indemnified Party to give notice as provided herein shall not relieve the
Indemnifying Party of its obligations hereunder, unless such failure is
materially prejudicial to an Indemnifying Party's ability to defend such action.
No Indemnifying Party, in the defense of any such claim or litigation, shall,
except with the consent of each Indemnified Party, consent to entry of any
judgment or enter into any settlement which does not include as an unconditional
term thereof the giving by the claimant or plaintiff to such Indemnified Party
of a release from all liability in respect to such claim or litigation.

          2.6   Information by Holder. The Holder or Holders of Registrable
Securities included in any registration shall promptly furnish to the Company
such information regarding such Holder or Holders and the distribution proposed
by such Holder or Holders as the Company may request in writing and as shall be
required in connection with any registration, qualification or compliance
referred to herein.

          2.7   Rule 144 Reporting. With a view to making available to Holders
of Registrable Securities the benefits of certain rules and regulations of the
Securities and Exchange Commission (the "Commission") that may permit the sale
of the Registrable Securities to the public without registration, the Company
agrees at all times hereafter to:

                (a)   make and keep public information available, as those terms
are understood and defined in Rule 144 promulgated under the Securities Act;

                (b)   file with the Commission in a timely manner all reports 
and other documents required of the Company under the Securities Act and the
Securities Exchange Act of 1934, as amended (the "Exchange Act");

                (c)   so long as a Holder holds Registrable Securities, furnish
to such Holder copies of all of the Company's periodic and other reports, proxy
materials and other documents made available to the Company's stockholders
generally; and

                (d)  so long as a Holder owns any Registrable Securities,
furnish to such Holder forthwith upon such Holder's request a written statement
by the Company as to its compliance with the reporting requirements of said Rule
144, and of the Securities Act and the Exchange Act, and such other reports and
documents filed by the Company as such Holder may reasonably request in availing
itself of any rule or regulation of the Commission allowing such Holder to sell
any such securities without registration.


                                       -9-
<PAGE>   10
          2.8   Transfer of Registration Rights. The rights to cause the Company
to register Registrable Securities of a Holder and keep information available,
granted to a Holder by the Company under Sections 2.1, 2.2 and 2.7 may be
assigned by any Holder to a transferee or assignee reasonably acceptable to the
Company representing in aggregate at least 3% of the then-outstanding Common
Stock of the Company; provided, however, that (i) the Company is given written
notice by the Holder at the time of or within a reasonable time after said
transfer, stating the name and address of said transferee or assignee and
identifying the securities with respect to which such registration rights are
being assigned, and (ii) any such transferee or assignee shall agree in writing
to become subject to the obligations of the transferring Holder hereunder.

          2.9   Termination. All rights of each Holder under Sections 2.1 and 
2.2 will terminate on the earlier of (i) the fifth anniversary of the date of
this agreement, and (ii) with respect to such Holder when such Holder holds
Registrable Securities representing less than 1% of the then-outstanding Common
Stock of the Company and such Holder's Registrable Securities are freely
saleable under Rule 144 promulgated under the Securities Act.


                                    SECTION 3

             Company Right of First Refusal as to Sales by Synopsys

          3.1   The Right. If at any time Synopsys proposes to offer to sell any
Shares ("Offered Shares") to one or more third parties in a transaction not
registered under the Securities Act in reliance upon a claimed exemption
thereunder (other than a transaction pursuant to Rule 144 promulgated under the
Securities Act) and the Company's Common Stock is then quoted on the Nasdaq
National Market (or any national securities exchange), then Synopsys will (i)
prepare in good faith and deliver to the Company a list of the third party or
parties to whom Synopsys proposes to offer to sell the Offered Shares and the
number of Offered Shares proposed to be offered, and (ii) grant to the Company
the right, on the terms and subject to the conditions of this Section 3, to
purchase up to all of the Offered Shares at a per-share price equal to the
Market Price of the Offered Shares on the date of such notice. The date the
Company is deemed to have received such notice (as determined pursuant to
Section 9.4) is referred to as the "Synopsys Notice Date". Within five business
days after receiving such notice, the Company will notify Synopsys of the number
of Offered Shares, if any, that it wishes to purchase pursuant to this Section
3. If the Company gives Synopsys notice that it desires to purchase a portion of
the Offered Shares, then within 15 business days after the Synopsys Notice Date
Synopsys will sell and deliver such portion of the Offered Shares to the Company
against payment therefor in cash, by check or wire transfer, at a place agreed
upon between the parties and at the time of the scheduled closing therefor.

          3.2   Failure to Exercise. If the Company has not elected to purchase
all of the Offered Shares or if the Company has failed to close the purchase of
any Offered Shares that it has elected to purchase within 15 business days of
the Synopsys Notice Date through no fault of Synopsys, then Synopsys may
thereafter sell or enter into a binding agreement to sell any remaining Offered
Shares to one or more of the third parties named in the foregoing list within 90
days of the Synopsys Notice


                                      -10-
<PAGE>   11
Date. In the event that Synopsys has not sold such Offered Shares or entered
into a binding agreement to sell such Offered Shares within 90 days of the
Synopsys Notice Date, Synopsys may not thereafter sell such Offered Shares
without again first offering such Offered Shares to the Company in accordance
with this Section 3.

                                    SECTION 4

                             Right of Participation

          4.1   The Right. Synopsys has the right of first refusal to purchase
up to Synopsys' Pro Rata Share of any New Securities that the Company may from
time to time issue after the date of this agreement (the "Right of
Participation"); provided, however, that Synopsys shall not have the Right of
Participation with respect to any issuance of New Securities that, when
cumulated with all prior issuances of New Securities as to which Synopsys would
have had a Right of Participation but for this proviso, would result in less
than a 10% reduction in Synopsys' Pro Rata Share.

          4.2   Procedures. In the event that the Company proposes to undertak
an issuance of New Securities (in a single transaction or a series of related
transactions) that would result in a 10% or greater reduction in Synopsys' Pro
Rata Share, the Company will give to Synopsys written notice of its intention to
issue New Securities (the "Participation Notice"), describing the amount and the
type of New Securities and the price and the general terms upon which the
Company proposes to issue such New Securities. Synopsys will have five business
days from the date of receipt of any such Participation Notice to agree in
writing to purchase Synopsys' Pro Rata Share of such New Securities upon the
terms and subject to the conditions specified in the Participation Notice by
giving written notice to the Company and stating therein the quantity of New
Securities to be purchased (not to exceed Synopsys' Pro Rata Share); provided,
however, that the per share purchase price for such New Securities will not
exceed $15.00 (as adjusted for stock splits, stock dividends and the like)
during the period from the date of this agreement until the earlier of (i) the
first anniversary of the date of this agreement, and (ii) such time as the total
number of shares of Common Stock purchased by Synopsys (as adjusted for stock
splits, stock dividends and the like) pursuant to the Right of Participation and
the Right of Maintenance exceeds 242,390. If Synopsys fails to so agree in
writing within such five-business-day period to purchase Synopsys' full Pro Rata
Share of an offering of New Securities, then Synopsys shall forfeit the right
under this Section 4 to purchase that part of its Pro Rata Share of such New
Securities that it did not so agree to purchase. Synopsys shall purchase the
portion elected by Synopsys concurrently with the closing of the transaction
triggering the Right of Participation.

          4.3   Failure to Exercise. Upon the expiration of such five-business-
day period, the Company will have 120 days thereafter to sell the New
Securities described in the Participation Notice (with respect to which
Synopsys' right of first refusal hereunder was not exercised) at the same or
higher price and upon non-price terms not materially more favorable to the
purchasers thereof than specified in the Participation Notice. In the event that
the Company has not issued and sold such New Securities within such 120-day
period, then the Company shall not thereafter issue or sell any New Securities
without again first offering such New Securities to Synopsys pursuant to this
Section 4.



                                      -11-
<PAGE>   12
                                    SECTION 5

                              Right of Maintenance

          5.1   General. Synopsys will, on the terms and subject to the 
conditions of this Section 5, have the right to purchase shares of Voting Stock
("Maintenance Securities") from the Company at the per share Purchase Price (as
defined in Section 5.2) following the issuance by the Company of Dilutive
Securities after the date of this agreement, solely in order to maintain
Synopsys' Prior Percentage Interest in the Company (the "Right of Maintenance").
Each right to purchase Maintenance Securities pursuant to this Section 5 shall
be on the same terms (other than price to the extent provided in Section 5.2
below) as the issuance of the Dilutive Securities that gave rise to the right to
purchase such Maintenance Securities.

          5.2   Purchase Price.

                (a)   Employee Stock. To the extent that the Right of 
Maintenance arises out of the issuance of Dilutive Securities to employees,
officers, directors, contractors, advisors or consultants of the Company
pursuant to incentive agreements or incentive plans approved by the Board of
Directors of the Company ("Employee Stock"), the per share "Purchase Price" of
the Maintenance Securities shall equal the Market Price of such Maintenance
Securities on the date on which Synopsys purchases such Maintenance Securities.

                (b)   Other Dilutive Securities. To the extent that the Right of
Maintenance arises out of any issuance of Dilutive Securities other than
Employee Stock, the per share "Purchase Price" of the Maintenance Securities
shall equal the per share price at which such Dilutive Securities were issued,
unless the issuance of such other Dilutive Securities occurred upon the
exercise, conversion or exchange of other securities ("Exchangeable
Securities"), in which case, the per share "Purchase Price" of the Maintenance
Securities shall equal the sum of (i) the per share amounts paid upon each such
exercise, conversion or exchange, and (ii) the per share amount previously paid
for the Exchangeable Securities (adjusted for any stock split, stock dividends
or other similar events).

                (c)   Consideration Other than Cash. In the event that Dilutive
Securities or Exchangeable Securities were issued for consideration other than
cash, the per share amounts paid for such Dilutive Securities or Exchangeable
Securities shall be determined jointly by the Company and Synopsys.

                (d)   Appraiser. If the Company and Synopsys are unable to reach
agreement within a reasonable period of time with respect to (i) the Market
Price of Maintenance Securities not quoted on the Nasdaq National Market (or, if
applicable, a national securities exchange), or (ii) the per share amounts paid
for Dilutive Securities or Exchangeable Securities issued for consideration
other than cash, such Market Price or per share amounts paid, as the case may
be, shall be determined by an appraiser jointly selected by the Company and
Synopsys. The fees and expenses of such appraiser shall be paid for by the
Company, provided that such fees and expenses shall be paid for by Synopsys


                                      -12-
<PAGE>   13
in the event that the appraiser's determination of the Market Price or the per
share amounts paid, as the case may be, is higher than, or not more that 5%
lower than, the last amount previously offered by the Company.

                (e)   Purchase Price Cap. Notwithstanding the foregoing, the per
share Purchase Price will not exceed $15.00 per share (as adjusted for any stock
splits, stock dividends or other similar events) during the period from the
Closing until the earlier of (i) the first anniversary of the Closing Date, and
(ii) such time as the total number of shares of Common Stock purchased by
Synopsys (as adjusted for stock splits, stock dividends and the like) pursuant
to the Right of Participation and the Right of Maintenance exceeds 242,390.

          5.3   Maintenance Amount. Synopsys' "Maintenance Amount" with respect
to any Maintenance Notice shall equal such number of Maintenance Securities as
is obtained by multiplying the number of Dilutive Securities specified in such
Maintenance Notice by Synopsys' Prior Percentage Interest, rounded to the
nearest whole share, plus, with respect to the first Maintenance Notice only,
5,409 shares of Common Stock.

          5.4   Notice of Issuance. Within 15 business days of (x) March 24,
1997, (y) the end of each of the Company's fiscal years commencing with its 1997
fiscal year, and (z) any of the Company's fiscal quarters in which there was an
issuance of Dilutive Securities which when cumulated with all prior issuance of
Dilutive Securities since the later of (i) the date of this agreement, or (ii)
the date of the last Maintenance Notice (subsequent to which Synopsys has had an
opportunity to purchase Maintenance Securities), results in a 10% reduction in
Synopsys' Prior Percentage Interest, the Company shall give to Synopsys written
notice (the "Maintenance Notice") describing the number of Dilutive Securities
issued since the date of the prior Maintenance Notice and the non-price terms
upon which the Company issued such Dilutive Securities, and the Maintenance
Amount of Maintenance Securities that Synopsys is entitled to purchase.

          5.5   Purchase of Maintenance Securities. Synopsys will have 15 
business days from the receipt of a Maintenance Notice to elect to purchase up
to Synopsys' Maintenance Amount of such Maintenance Securities at the Purchase
Price and upon the terms and subject to the conditions specified in the
Maintenance Notice. The closing of such purchase shall occur within five
business days after such election to purchase or at such later date as the
parties may agree. If Synopsys fails to elect to purchase Synopsys' full
Maintenance Amount of Maintenance Securities within such 15-business-day period,
then Synopsys shall forfeit the right under this Section 5 to purchase that part
of Synopsys' Maintenance Amount that it did not so elect to purchase.


                                    SECTION 6

                              Standstill Agreement

          6.1   Prohibition. Synopsys (which, for purposes of this Section 6
includes Synopsys and all of its subsidiaries) will not, directly or indirectly,
acquire, or enter into discussions, negotiations, arrangements or understandings
with any third party to acquire prior to the expiration of this Section 6
(including, without limitation, the lapse of the negative covenants of this
Section 6.1 upon



                                      -13-
<PAGE>   14
the occurrence of any of the events described in Section 6.1(a) through (c)),
beneficial ownership of any Voting Stock, any securities convertible into or
exchangeable for Voting Stock, or any other right to acquire Voting Stock
(except, in any case, by way of stock dividends or other distributions or
offerings made available to the holders of Voting Stock generally) without the
written consent of the Company, if the effect of such acquisition would be to
increase the Voting Power of all Voting Stock then owned by Synopsys or which
Synopsys has a right to acquire to more than 9.9% of the total Voting Power of
all Voting Stock then outstanding; provided, however, that Synopsys may acquire
Voting Stock without regard to the foregoing limitation:

                (a)   if any person or group (other than Messrs. Cooper and
Chyan and their family members) not affiliated with Synopsys and then owning
Voting Stock representing at least 5% of the Voting Power of all Voting Stock
then outstanding provides written notice to the Company or files any document
with the Commission that contains terms that put the Company reasonably on
notice of the likelihood that such person or group has acquired or is proposing
to acquire any shares of Voting Stock or the right to acquire shares of Voting
Stock having aggregate Voting Power of more than 50% of the total Voting Power
of all shares of Voting Stock then outstanding and, in the case of a proposal to
acquire such shares, the proposal and any related offers to purchase shares are
not withdrawn or terminated prior to Synopsys making an offer to acquire Voting
Stock or acquiring Voting Stock in response thereto; provided, however, that the
negative covenants of this Section 6.1 will resume following the withdrawal of
any proposal or offer to purchase shares made in accordance with this Section
6.1(a);

                (b)   if it is publicly disclosed or Synopsys otherwise learns
that the Company has entered into any letter of intent or agreement with a
person or group that, if consummated, would result in such person or group
owning or having the right to acquire shares of Voting Stock having aggregate
Voting Power of more than 50% of the total Voting Power of all shares of Voting
Stock then outstanding;

                (c)   after the fifth anniversary of the date of this agreement.

          6.2   Exceptions. Synopsys will not be obligated to dispose of Voting
Stock if the aggregate percentage of the total Voting Power of all Voting Stock
then outstanding represented by Voting Stock owned by Synopsys or which Synopsys
has the right to acquire is increased as a result of a recapitalization of the
Company, a repurchase of securities by the Company or any other action taken by
the Company or any of its affiliates, and, in any of such events, the percentage
set forth in the first paragraph of Section 6.1 thereafter will be deemed
increased to the percentage of Voting Stock owned by Synopsys immediately
following such event.

          6.3   Percentage Adjustment. In the event Synopsys purchases or
otherwise acquires any shares of Voting Stock in a transaction permitted by
Section 6.1(a) before the resumption of the negative covenants of Section 6.1,
the percentage set forth in the first paragraph of Section 6.1 thereafter will
be deemed increased to the percentage of Voting Stock owned by Synopsys after
such purchase or acquisition.



                                      -14-
<PAGE>   15
          6.4   Excluded Shares. For purposes of this agreement, Synopsys will
not be deemed to have beneficial ownership of any Voting Stock held by a
Synopsys pension plan or other employee benefit program if Synopsys does not
have the power to control the investment decisions of such plan or program.


                                    SECTION 7

                                Change of Control

          7.1   Notice of Acquisition Offer. The Company or the Selling
Stockholders shall give Synopsys at least five business days' notice prior to:

                (a)   the Company or any of the Selling Stockholders accepting 
any offer from any entity or group to acquire any shares of Voting Stock which
would result in such person or group owning or having the right to acquire (i)
more than 50% of the Voting Stock of the Company then outstanding, or (ii) all
or substantially all of the assets of the Company; or

                (b)   the Company's board of directors approving any merger or
consolidation of the Company with or into any other entity in which the
Company's stockholder's prior to any such transaction do not hold more than 50%
of the voting power in the surviving entity.

          7.2   Notice of Counterproposal. If within such five-day period
following the notice referred to above, Synopsys shall make a counterproposal
and such proposal results in a further proposal from any party, then the Company
or the Selling Stockholder, as the case may be, will give Synopsys at least
three business days' notice of such further proposal prior to accepting the
same.

          7.3   Reduction of Notice Period. The notice periods referred to in
this Section 7 may be reduced or eliminated by resolution of the Company's Board
of Directors to the extent (and only to the extent) that it specifically
determines, based upon the advice of counsel, that providing such notice would
constitute a violation of its fiduciary obligations.

                                    SECTION 8

                Additional Rights; Termination of Certain Rights

          8.1   Pro Rata Repurchase. In the event that the Company repurchases
shares of its Voting Stock from a third party, the Company will make lawful
provision to offer to, and have the legal right to, repurchase shares of Voting
Stock from Synopsys to the extent necessary so that the Voting Power of all
Voting Stock then owned by Synopsys or which Synopsys then has a right to
acquire does not exceed 10% of the total Voting Power of all Voting Stock then
outstanding.

          8.2   Limitation on Sale of Shares. Prior to the first date on which
Synopsys may exercise its registration rights under Section 2, none of the
Selling Stockholders may sell (including, without limitation, any short sale),
offer to sell, contract to sell, pledge or otherwise dispose of any of the



                                      -15-
<PAGE>   16
Common Stock, or any options or warrants to purchase any of the Common Stock, or
any securities convertible into or exchangeable for any of the Common Stock,
owned directly by such Selling Stockholder, or with respect to which such
Selling Stockholder has the power of disposition, in any such case whether now
owned or hereafter acquired; provided, however, that a Selling Stockholder may
sell or transfer such securities (i) to members of such Selling Stockholder's
family, and (ii) in a registered public offering with respect to which Synopsys
has registration rights pursuant to Section 2.2.

          8.3   Termination of Certain Rights. The rights and obligations of the
parties under Sections 3, 4, 5, 6 and 7 will terminate upon the earlier to occur
of (i) the fifth anniversary of the Closing Date, (ii) the first date that
Synopsys holds less than 50% of the number of Shares purchased by Synopsys at
the Closing pursuant to the Purchase Agreement (such number to be
proportionately adjusted for stock splits, stock dividends and similar events),
(iii) the expiration of or any termination of either the Joint Marketing
Agreement or the Cooperative Development Agreement, each dated the date of this
agreement between the Company and Synopsys (collectively, the "Ancillary
Agreements"), in accordance with their respective terms for any reason (except,
at Synopsys' option, for a termination by Synopsys due to an uncured breach by
the Company of one of the Company's material obligations under either of such
agreements), (iv) at the option of the Company, upon any failure by Synopsys to
perform its Golden Flow Obligations, as such term is defined in the Ancillary
Agreements, under either of the Ancillary Agreements permitting the Company to
terminate either of the Ancillary Agreements in accordance with its respective
terms, (v) at Synopsys' option, upon any failure by the Company to perform its
Golden Flow Obligations under either of the Ancillary Agreements permitting
Synopsys to terminate either of the Ancillary Agreements in accordance with its
respective terms, or (vi) immediately prior to the closing of any Acquisition.


                                    SECTION 9

                                  Miscellaneous

          9.1   Amendment and Waiver. Any term of this agreement may be amended
and the observance of any such term may be waived (either generally or in a
particular instance and either retroactively or prospectively) with the written
consent of the Company and Holders holding at least a majority of the
outstanding Registrable Securities.

          9.2  Governing Law. This agreement shall be governed in all respects
by the laws of the State of California, as such laws are applied to agreements
among California residents entered into and to be performed entirely within
California.

          9.3   Successors and Assigns. Except as otherwise expressly provided
herein, the provisions hereof shall inure to the benefit of, and be binding
upon, the successors, assigns, heirs, executors and administrators of the
parties hereto.

          9.4   Entire Agreement. The Transaction Documents (as defined in the
Purchase Agreement) and the other documents delivered pursuant thereto
constitute the full and entire understanding and agreement between the parties
with respect to the subjects thereof.


                                      -16-
<PAGE>   17
          9.5   Notices, etc. All notices and other communications required or
permitted hereunder shall be in writing and shall be sent by facsimile,
overnight courier or mailed by certified or registered mail, postage prepaid,
return receipt requested, to the facsimile number or address as follows:

          Company:       Cooper & Chyan Technology, Inc.
                         1601 South De Anza Boulevard
                         Cupertino, California 95014
                         Telephone:  (408) 342-5518
                         Facsimile:  (408) 342-5650
                         Attention:  Mr. John R. Harding, President

                         with a copy (which will not constitute notice) to:

                         Fenwick & West
                         Two Palo Alto Square, Suite 800
                         Palo Alto, California 94306
                         Telephone:  (415) 494-0600
                         Facsimile:  (415) 857-0361
                         Attention:  Gordon Davidson, Esq.

          Synopsys:      Synopsys, Inc.
                         700 East Middlefield Road
                         Mountain View, California 94043-4033
                         Telephone: (415) 962-5000
                         Facsimile:  (415) 694-4087
                         Attention: Paul Lippe, Vice President, Legal

                         with a copy (which will not constitute notice) to:

                         Wilson, Sonsini, Goodrich & Rosati
                         650 Page Mill Road
                         Palo Alto, California 94304-1050
                         Telephone:  (415) 493-9300
                         Facsimile:  (415) 493-6811
                         Attention:  Thomas C. DeFilipps, Esq.

          Selling        c/o  Cooper & Chyan Technology, Inc.
          Stockholders:  1601 South De Anza Boulevard
                         Cupertino, California 95014
                         Telephone:  (408) 342-5518
                         Facsimile:  (408) 342-5650

or to such other facsimile number or address provided to the parties to this
agreement in accordance with this Section 9.5. Such notices or other
communications shall be deemed delivered upon receipt, in the case of overnight
delivery or facsimile transmission (as evidenced by the confirmation thereof),
or 3 days after deposit in the mails (as determined by reference to the
postmark).


                                      -17-
<PAGE>   18
          9.6   Assignment. Rights under Section 2 may be assigned only in
accordance with the provisions of Section 2.8. Rights of Synopsys under Sections
4, 5, and 7 may not be assigned (whether by operation of law or otherwise)
without the prior written consent of the Company; provided, however, that, in
the event Synopsys is acquired by consolidation, merger, purchase of assets, or
other reorganization in which such third party acquires, in a single transaction
or series of related transactions, substantially all of Synopsys' assets or 50%
or more of the voting power of Synopsys or 50% or more of the equity ownership
of Synopsys, such consent will not be unreasonably withheld. Rights of the
Company under Section 3 may not be assigned (whether by operation of law or
otherwise) without the prior written consent of Synopsys; provided, however,
that, in the event of an Acquisition, such consent will not be unreasonably
withheld.

          9.7   Severability. In case any provision of this agreement shall be
declared invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions shall not in any way be affected or
impaired thereby.

          9.8   Counterparts. This agreement may be executed in any number of
counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

          9.9   Delays or Omissions. No delay or omission to exercise any remedy
accruing to a party upon any breach or default of another party under this
agreement shall impair any such remedy, nor shall it be construed to be a waiver
of any such breach or default, or any acquiescence therein, or of or in any
similar breach or default thereafter occurring; nor shall any waiver of any
single breach or default be deemed a waiver of any other breach or default
theretofore or thereafter occurring. Any waiver, permit, consent or approval of
any kind or character on a party's part of any breach or default under this
agreement or any waiver on such party's part of any provisions or conditions of
this agreement must be in writing and will be effective only to the extent
specifically set forth in such writing, and all remedies, either under this
agreement, or by law or otherwise afforded to the parties, will be cumulative
and not alternative.


                                      -18-
<PAGE>   19
          IN WITNESS WHEREOF, the parties have executed this Investor Rights
Agreement as of the date first above written.

                                            COOPER & CHYAN TECHNOLOGY, INC.



                                            By: /s/  John R. Harding
                                                --------------------------------
                                                Name: John R. Harding
                                                Title:

                                           
                                            SYNOPSYS, INC.



                                            By: /s/ Paul Lippe
                                                --------------------------------
                                                Name: Paul Lippe
                                                Title: VP, Business Development


Executed Solely for Purposes
of Sections 7.1, 7.2 and 9:


/s/ John F. Cooper
- - - ----------------------------------
John F. Cooper


/s/ David Chyan
- - - ----------------------------------
David Chyan


/s/ John R. Harding
- - - ----------------------------------
John R. Harding


/s/ William Portelli
- - - ----------------------------------
William Portelli


/s/ Robert D. Selvi
- - - ----------------------------------
Robert D. Selvi



                                      -19-






<PAGE>   1
                                  Exhibit 11.01

                Statement of Computation of Net Income Per Share

                         COOPER & CHYAN TECHNOLOGY, INC.
                STATEMENT OF COMPUTATION OF NET INCOME PER SHARE
<TABLE>
<CAPTION>
                                                                     QUARTER ENDED     QUARTER ENDED
                                                                        MARCH 31          MARCH 31
                                                                          1996              1995
                                                                          ----              ----
<S>                                                                  <C>                <C>        
Net Income                                                           $   956,817        $    32,000


Weighted average common shares outstanding                            11,994,435          6,958,253
Weighted average common share equivalents                              1,765,030          1,570,587
   related to stock options (using the Treasury stock method)
Shares relating to SAB No 64 and 83                                         --            1,374,160
Convertible preferred stock                                                 --            1,480,000

                                                                     -----------        -----------
Shares used in per share computation                                  13,759,465         11,383,000
                                                                     -----------        -----------

                                                                     -----------        -----------
Net income per share                                                 $      0.07        $      0.00
                                                                     ===========        ===========
</TABLE>


<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS FOR THE QUARTER ENDED MARCH 31, 1996 AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               MAR-31-1996
<CASH>                                       3,059,791
<SECURITIES>                                23,522,407
<RECEIVABLES>                                5,613,735
<ALLOWANCES>                                   392,484
<INVENTORY>                                          0
<CURRENT-ASSETS>                            33,340,760
<PP&E>                                       4,404,179
<DEPRECIATION>                               1,736,746
<TOTAL-ASSETS>                              36,256,901
<CURRENT-LIABILITIES>                        6,269,609
<BONDS>                                              0
                                0
                                          0
<COMMON>                                       120,757
<OTHER-SE>                                           0
<TOTAL-LIABILITY-AND-EQUITY>                36,256,901
<SALES>                                      6,440,251
<TOTAL-REVENUES>                             6,440,251
<CGS>                                          402,102
<TOTAL-COSTS>                                4,842,340
<OTHER-EXPENSES>                                 5,637
<LOSS-PROVISION>                                62,539
<INTEREST-EXPENSE>                             260,243
<INCOME-PRETAX>                              1,450,415
<INCOME-TAX>                                   493,598
<INCOME-CONTINUING>                            956,817
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   956,817
<EPS-PRIMARY>                                     0.07
<EPS-DILUTED>                                     0.07
        

</TABLE>


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