CORTECH INC
PRRN14A, 1998-07-20
PHARMACEUTICAL PREPARATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                            SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
                                (Amendment No. )

Filed by the Registrant |_|
Filed by a Party other than the Registrant |X|

Check the appropriate box:

|X| Preliminary Proxy Statement
|_| Definitive Proxy Statement
|_| Definitive Additional Materials
|_| Soliciting Material Pursuant to Rule 14a-11(c) or Rule 14a-12


                                 Cortech, Inc.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)

                      Asset Value Fund Limited Partnership
- --------------------------------------------------------------------------------
                   (Name of Person(s) Filing Proxy Statement)

Payment of Filing Fee (Check the appropriate box):

|_| $125 per Exchange Act Rule 0-11(c)(1)(ii), 14a-6(i)(1) or 14a-6(j)(2).
|_| $500 per each party to the controversy pursuant to
    Exchange Act Rule 14a-6(i)(3).
|_| Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.
|X| No fee required

1) Title of each class of securities to which transaction applies:

   Common Stock
   -----------------------------------------------------------------------------

2) Aggregate number of securities to which transaction applies:

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

3) Per unit price or other underlying value of transaction computed
   pursuant to Exchange Act Rule 0-11:*

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

4) Proposed maximum aggregate value of transaction:

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

|_| Check box if any part of the fee is offset as provided by
    Exchange Act Rule 0-11(a)(2) and identify the filing for which
    the offsetting fee was paid previously.  Identify the previous
    filing by registration statement number, or the form or schedule
    and the date of its filing.

    1) Amount previously paid:
                               -------------------------------------------------
    2) Form, Schedule or Registration No.
                                         ---------------------------------------

    3) Filing party:
                    ------------------------------------------------------------

    4) Date filed:
                    ------------------------------------------------------------

___________
*Set forth the amount on which the filing fee is calculated and state how it was
 determined.

(032796DTI)

<PAGE>

REVISED PRELIMINARY OPPOSITION PROXY STATEMENT                     July __, 1998

                         ANNUAL MEETING OF STOCKHOLDERS
                  OF CORTECH, INC. ("Cortech" or "the Company")

             ASSET VALUE FUND LIMITED PARTNERSHIP ("Asset Value 1")
                        (a Delaware limited partnership)
   
     This Proxy  Statement  and the enclosed  white proxy card are being sent by
Asset Value on or about __________,  1998 in connection with its solicitation of
proxies at the Annual Meeting of Stockholders being held by Cortech at 9:00 a.m.
local time at the Renaissance  Hotel,  3801 Quebec Street,  Denver,  Colorado on
September  4, 1998 (the  "Meeting").  THIS  MEETING WAS ORDERED BY THE  CHANCERY
COURT OF  DELAWARE  ONLY AFTER A LAWSUIT  WAS FILED BY ASSET VALUE TO COMPEL THE
MEETING.

     Asset  Value  and  two  other  investors  own   approximately  15%  of  the
outstanding  common stock of Cortech ("Cortech  Stock"),  making them by far the
largest stockholders.  As of this date, no one other than Asset Value, including
management,  has mailed a proxy  statement  in  connection  with the Meeting and
therefore  Asset Value does not know what other  proposals  will be submitted to
stockholders.  In  correspondence  with Asset  Value,  the  Chairman  of Cortech
indicated  that  Cortech  may  offer a  proposal  to amend  the  Certificate  of
Incorporation to declassify the Board ("the Declassification Amendment").  Under
the Certificate of  Incorporation  and Bylaws  currently in effect,  the Cortech
board has five members  whose terms are staggered so that no more than two terms
expire in any one year. A staggered board, sometimes referred to as a classified
board,  is an  obstacle  to  gaining  control  of the Board in any one year.  If
management  proposes  the  Declassification  Amendment  and  it is  approved  by
stockholders, Asset Value will seek to elect five nominees to the Board, who, if
elected,  would  comprise the entire Board,  transferring  control of Cortech to
Asset Value.

     If management does not propose the  Declassification  Amendment or if it is
proposed and not approved by stockholders, Asset Value will seek to gain control
of  Cortech at the  Meeting by  proposing  to amend the Bylaws to  increase  the
number of directors  from five to seven (the "Board  Amendment")  and subject to
the  approval of the Board  Amendment,  to elect its four  nominees as directors
(the two  vacancies  available  under the current  Bylaws plus the two vacancies
created by the Board  Amendment).  If the Board  Amendment  is approved and four
Asset Value  nominees are elected,  Asset  Value's  nominees  will  constitute a
majority of the Board and  therefore  control of Cortech will  transfer to Asset
Value.

     If the  Declassification  Amendment  is not offered or not approved and the
Board  Amendment  is not  approved,  Asset  Value  will  seek to have two of its
nominees  elected as directors in opposition  to any other  nominees for the two
vacancies available under the Bylaws currently in effect.

     In the past,  Cortech has also sought the  ratification  of Arthur Andersen
LLP as the  Company's  independent  auditors.  Asset  Value will  vote:  FOR the
ratification of Arthur Andersen LLP as the Company's  independent auditors if it
is proposed;  FOR the Declassification  Amendment if it is proposed; and FOR the
Board Amendment and Asset Value nominees. Since no other proxy
- -------------
     1    Asset Value is a Delaware limited partnership which is wholly-owned by
Kent Financial  Services,  Inc., a Delaware  corporation  ("Kent") the shares of
which are  publicly  traded on NASDAQ  under the symbol  KENT.  Asset  Value was
organized  in  September,  1990 for the  purpose  of  investing  in  securities,
principally marketable securities.  Additional information about Asset Value and
its  management  and about  Kent and the names of its  officers,  directors  and
controlling  stockholders and their ownership interests is presented on Schedule
1 of this Proxy Statement.


<PAGE>



statement  has been  filed or  mailed,  Asset  Value  does not know  what  other
proposals will be submitted to stockholders  and therefore,  Asset Value also is
seeking  express  authorization  from  stockholders to vote proxies on any other
matter whether or not it becomes known prior to the Meeting.

     The close of business on July 10, 1998 has been fixed by the Company as the
record date in determining the number of shares eligible to vote at the Meeting.
A copy of this  Proxy  Statement  and  white  Proxy  Card  will be mailed to all
stockholders entitled to vote at the Annual Meeting.  According to the Company's
Form 10-Q  filed for the  quarter  ended  March 31,  1998,  the number of shares
entitled to vote at the Meeting are  18,523,918  ("Shares").  The quorum for the
Meeting is 9,261,960 Shares. The favorable vote of a majority of Shares entitled
to  vote  at  the  Meeting  (9,261,960  Shares)  are  required  to  approve  the
Declassification  Amendment  if  it is  proposed.  The  approval  of  the  Board
Amendment  and the election of Directors  also require the  favorable  vote of a
majority of Shares present and voting at the Meeting.

     In reliance upon Rule 14a-5(c)of the Securities and Exchange Act of 1934 2,
reference  is  made to  management's  proxy  statement or information  statement
for  a  full  description  of  management's  proposals  (if  any),  as  well  as
information  with  respect  to the  number  of  Shares  eligible  to vote at the
Meeting, the quorum, the securities ownership of the Company,  information about
the Company's officers and directors, including compensation,  information about
the  ratification  of the  appointment  of Arthur  Andersen  LLP as  independent
auditors (if proposed) and the date by which  stockholders must submit proposals
for inclusion in the next annual meeting.
    

PLEASE READ THE FOLLOWING  MATERIAL WITH CARE BECAUSE WE BELIEVE THAT  CORTECH'S
FUTURE DEPENDS ON YOUR VOTE.

                              WE URGE YOU TO VOTE:
   
         FOR THE DECLASSIFICATION AMENDMENT, if it is proposed or if the
                         Board is not declassified then

                     FOR THE BOARD AMENDMENT (which will add
                        two vacancies on the Board for a
                                 total of four.)

             FOR ALL OF ASSET VALUE'S NOMINEES (which in combination
           with the Declassification Amendment or the Board Amendment
                              would effect a change
                           of control to Asset Value)


- -----------
     2   Rule 14a-5(c)  provides that "any  information  contained in any  other
proxy  soliciting  material which has been furnished to each person solicited in
connection with the same meeting or subject matter may be omitted from the proxy
statement,  if a clear reference is made to the particular  document  containing
such information."

                      
<PAGE>



                FOR GRANTING ASSET VALUE AUTHORITY TO VOTE ON ANY
                   OTHER MATTERS WHICH COME BEFORE THE MEETING

     We are seeking your vote because we believe  that the  incumbent  Board has
exercised  poor judgment in governing  Cortech and that Asset  Value's  nominees
would provide better  leadership  because they are not tied to what we think are
the failures of the past.

     At the end of fiscal  1997,  Cortech  had net assets of only $15.4  million
after  losing  over $70  million  since  1993 in a  failed  attempt  to  exploit
Cortech's  technology.  The incumbent Board then proceeded to expend $673,000 of
Cortech's  limited  resources  promoting  a  merger  with  BioStar,   Inc.  (the
"Merger"),  a company with a $5.6  million  negative net worth even though Asset
Value  warned the Board from the start that the Merger was not in the  interests
of stockholders3  who, Asset Value said, would never approve such a transaction.
The Merger was canceled on May 7,1998.

                  Only Asset Value was willing to use its time
                        and money to publicly oppose the
                                     Merger!

     Within two weeks,  Kenneth Lynn, the former CEO, left Cortech,  taking with
him, what we would call, a "departure bonus" of almost $500,000, another 3.5% of
Cortech's  remaining  cash of $14.3  million.  The  calculation  of the $500,000
departure  bonus was  derived by adding 20 months of salary  ($442,000),  future
consulting fees of an undisclosed  amount and health  insurance  coverage for 18
months  estimated at $600 per month as reported in  Cortech's  Form 8-K filed on
May 18, 1998.

      We ask you. Do you want Cortech led into the future by an incumbent
              Director or any other nominee connected to the past?
    

                              Don't take a chance.
                               Vote for a change.
                        Vote for Asset Value's nominees!
   
                                  MORE RED INK!
                                  ------------
    
     After the  termination  of the  Merger,  Cortech's  Form 10-Q for the first
quarter of 1998 revealed that Cortech's  losses not only continued but increased
compared to last year. In a quarter with No research and development  activities
and No revenues, Cortech still had approximately 15
- --------
     3    Asset Value has not retained an independent  financial adviser and its
conclusions  are  solely  based  on the  opinion  of its  manager,  Asset  Value
Management,  Inc. which was reached after reviewing  management's proxy material
for the Merger, including the opinion of management's financial adviser.

                                                         

<PAGE>



full-time4 employees and general and administrative  expenses of $1,522,000,  of
which,  according to Cortech,  merger expense only  accounted for  approximately
$673,000.

               The question we believe you should ask yourself, is

              ARE YOU BETTER OFF NOW THAN YOU WERE FIVE YEARS AGO?

     In what we think is the  biggest  bull  market in  history,  Cortech  Stock
prices  have  declined  from $18.25 per share in 1993 to $.50 per share in 1998,
making Cortech, by any comparison,  in our view, one of the poorest stock market
performers during this period--AND THAT'S NO BULL!

   

                                  COMPARISON OF
                CORTECH'S STOCK PERFORMANCE (NASDAQ SYMBOL-CRTQ)
                                       TO
                      THE NASDAQ BIOTECHNOLOGY INDEX (IXBT)
                                     AND THE
                AMERICAN STOCK EXCHANGE BIOTECHNOLOGY INDEX (BTK)

                            [GRAPH THE ABOVE]

<TABLE>
<CAPTION>

               Cortech         IXBT        BTK
               ------          -----      ------
<S>           <C>             <C>         <C>   
1993          $18.25          197.88      115.78

1994           14.25          161.40       82.06

1995            3.65625       304.30      133.77

1996            3.8125        314.48      144.56

1997            2.03125       304.89      163.28

7/17/1998        .50          335.15      144.16

</TABLE>
    
                              NOT A PRETTY PICTURE!

- --------
     4    Cortech  does not  disclose  whether  there are  additional  part-time
employees and consultants still hanging on.

                                                        

<PAGE>



                              TOO LITTLE, TOO LATE
                              --------------------
   
     Seven months after Asset Value first asked for representation on the Board;
long after the Board was sued for misfeasance;  after Cortech had spent $673,000
on the failed Merger; after Cortech had lost another  approximately $3.4 million
from operations (from September 30, 1997 through March 31, 1998), finally on May
11, 1998 the Cortech  Board  expressed an interest in meeting with Asset Value's
manager,  Paul Koether. By this time, Asset Value had already spent or committed
significant  amounts of its own funds  (estimated to exceed  $125,000  including
counsel fees and management time) in opposing the Merger and in securing control
of the  Board  because  it  believed  that a change in course  for  Cortech  was
absolutely  essential  and because it believed  that a Board  controlled  by the
incumbents would not embrace the necessary changes. Asset Value thought that the
Board's offer to meet, in and of itself, was too little too late.

     Asset  Value was  willing  to meet only if the Board  would  first take the
following  steps which,  in the view of Asset Value,  would enhance  stockholder
value and  stockholder  democracy:  1) lift the Poison  Pill put in place by the
incumbent  Board  without  stockholder  approval ; 2) amend the By-laws to allow
stockholders  owning 10% or more to call a special  meeting;  3)  eliminate  the
current  classification  of the  Board so that all  directors  would  stand  for
election at the upcoming  meeting and 4) elect three Asset Value  nominees which
would  constitute a majority of the current five person Board. To date the Board
has resisted all of these proposals  although it did indicate in  correspondence
with Asset Value that it may propose to declassify the Board at this Meeting.

     Supporters of classified  boards and poison pills claim that they are tools
for  directors  to  resist  takeovers  that they  deem  unfair to  stockholders.
Whatever the justification for classified boards and poison pills in general, in
the case of Cortech,  Asset Value believes that they have served only to prevent
competition for control.  Moreover, in Asset Value's view, this Board's approval
of the BioStar  transaction  exemplifies how these "tools" can be misused in the
hands of directors who have bad  judgment.  If elected,  Asset Value's  nominees
will  remove  the  poison  pill  and if the  Declassification  Amendment  is not
proposed at the this Meeting, Asset Value will seek to have stockholders approve
a declassification at the next Annual Meeting.

                  THE BOARD'S VERSION OF STOCKHOLDER DEMOCRACY

     This Board  called  this  Meeting  only after Asset Value filed to have the
Delaware  courts compel  Cortech to hold the Meeting.  We ask you: Why would the
Board fail to call a meeting  within the time  required by law? Why is the Board
spending  your money and our money to delay  what we believe  will be the day of
reckoning when the  stockholders  will finally be given a choice between what in
our view,  is the  failed  past and what we think  will be a better  future.  In
making this choice, we ask you to consider that Asset Value has committed not to
seek to merge  Cortech  with any  affiliate or entity in which Asset Value is an
investor. Asset Value intends to benefit from its Cortech investment only to the
same extent other stockholders  benefit.  Moreover Asset Value's nominees do not
intend to take any fees for managing Cortech.





<PAGE>



                               SAME OLD; SAME OLD

     Bert Fingerhut,  an incumbent  Cortech  director,  replaced Kenneth Lynn as
CEO. Mr.  Fingerhut  responded to Asset Value's request for majority  control of
the Board by offering to  declassify  the Board and to designate one Asset Value
nominee on a five member  slate.  In addition to himself and  incumbent  Charles
Cohen, Mr. Fingerhut's  proposed slate would include Edward Finkelstein and John
Papp. Mr. Fingerhut  described  Messrs  Finkelstein and Papp as newcomers but we
believe they are two cronies of management.  As Mr. Fingerhut himself disclosed,
"As you know, Mr.  Finkelstein and his associates  have a significant  ownership
stake  in  Cortech"   (although  Mr.  Finkelstein  and  his  unnamed  associates
presumably  own less than 5% since no Schedule 13D has been filed) and "Dr. Papp
is familiar with Cortech's  intellectual property from his service as a Director
of CDC, a research and development affiliate of Cortech." (emphasis added).

                         TIME AND MONEY ARE RUNNING OUT!

     On May 18, 1998, CEO Kenneth Lynn left Cortech. We believe that Mr Lynn was
made a scapegoat for what we think is Cortech's prior mismanagement.  But in our
opinion, Mr. Lynn was a symptom of what is wrong with Cortech not the source, at
least, in our view, not the only source.  In the past five years  (including the
first quarter of 1998),  Cortech has lost over $70 million,  and as of March 31,
1998, had cash of only $14.3 million.  We ask, does Lynn's departure absolve the
incumbent Board members of their  responsibility  for these losses? We think the
answer is a resounding No!


                  PICTURE OF HOUR GLASS WITH CONTENTS READING


                                                            CASH REMAINING AT
                                                            MARCH 31, 1998
                                                            $14.3 million



                                                            CASH LOSSES FROM
                                                            INCEPTION (1982) TO
                                                            DATE $86 million!!!



<PAGE>


     And we ask where were Mr. Fingerhut's recommended nominees, Mr. Finkelstein
and Dr. Papp while Cortech was losing all this money? Right behind the Board, we
think!
    

                               STOP THE RED INK!
                               ----------------
   
     Asset Value  considers a shutdown of Cortech an  alternative  which must be
considered,  particularly in view of the continued  losses reported in the first
quarter of 1998.  Such a course  however,  has  risks,  including  the  possible
further  diminishment  of Cortech's  technology  and the  possible  cessation of
Cortech as a going concern.  The matter would be further  evaluated with current
employees once Asset Value gained control, therefore, there is no assurance that
Cortech would be shut down.
    
     Asset Value can only give stockholders the assurance that its nominees will
try to further reduce Cortech's expenses and will move as quickly as possible to
secure a merger partner. Expenses that will be particularly scrutinized for cuts
are any part-time employees or consultants and employees engaged in any activity
other than care taking.  The new Board would seek to reduce,  if  possible,  any
professional  fees  unrelated  to seeking a  strategic  partner.  Asset  Value's
nominees have pledged to take no fees for serving as directors.

                         THE SHAPE OF THINGS TO COME 5
                         -----------------------------

     So,  what else will  Asset  Value do if it obtains  control of the  Cortech
Board?  We believe that once the Cortech Board  determined to change  control of
Cortech,  it should have sought competitive  transactions more aggressively,  by
advertising in the financial  media,  by engaging an investment  banker from the
outset to solicit  merger  partners  and by publicly  stating that the Board was
conducting  an open  bidding  process for control of Cortech.  If elected  Asset
Value's  nominees  will take these  steps.  Asset Value has no  specific  merger
partner  in mind and has  considered  possible  alternatives  for the  future of
Cortech only in a preliminary  way. In the course of its own business,  however,
Asset Value constantly reviews  investment  opportunities and in connection with
this process has seen companies which might be attractive strategic partners for
Cortech although  additional analysis would be required to determine whether any
of these companies are a fit with Cortech.

   
     The  principal  standards  for seeking a candidate  would be balance  sheet
quality and positive earnings.  Asset Value also believes that a private company
which seeks a public market or a public company which needs Cortech's  assets to
qualify  for  NASDAQ,  would  consider  these  attributes  as  well  as  cash in
calculating  Cortech's value. As of March 31, 1998,  Cortech's total assets were
$14.9 million of which cash and cash equivalents were $14.3 million. Asset Value
is not sure,  however,  that there are  potential  acquisitions  or mergers that
would be attractive for Cortech. One thing is certain however,  Asset Value will
not seek to merge  Cortech with any  affiliate or entity in which Asset Value is
an investor.  Asset Value intends to benefit from its Cortech investment only to
the same extent other stockholders benefit.
    
- ------------
     5    H.G. Wells

                                                        

<PAGE>



   WARNING: "Those who cannot remember the past are condemned to repeat it."6
   -------
   
     In our  opinion,  several  individuals  and  entities,  other then  Cortech
stockholders  would have  reaped the  benefits of the Merger  with  BioStar.  We
believe  that Mr.  Lynn stood to benefit  from the Merger  because it would have
triggered his golden  parachute  ($1,300,000  for him and others with  severance
agreements) and enabled him (and other Board members and executive  officers) to
exercise 623,535 options.  BioStar's  management would have received  additional
compensation  and options in  connection  with the Merger.  In fact, it seems to
Asset Value,  that every  participant  was to profit from the Merger  except the
public stockholders of Cortech, who would have suffered a dilution in book value
per  Cortech  share of 64% (from an  historical  $.83 to a pro forma $.30) while
BioStar  stockholders  would have enjoyed an  improvement  in book value from an
historical negative ($2.86) to a positive $.17 per share.  Remember.  Only Asset
Value was willing to spend its time and money to publicly oppose the Merger!
    

                              PLEASE ASK YOURSELF:
   
               DO YOU WANT A BOARD COMPRISED OF ANY DIRECTORS WHO
                 SERVED WHILE CORTECH WAS LOSING ALL THIS MONEY?

               DO YOU WANT FUTURE TRANSACTIONS SELECTED BY ANYONE
              WHO EITHER APPROVED THE MERGER OR STOOD SILENT WHILE
                            THE MERGER MOVED FORWARD?

                  WE HOPE YOUR ANSWER WILL BE : CERTAINLY NOT!

                 PLEASE SEND THE WHITE PROXY CARD TO ASSET VALUE
              AND VOTE TO DECLASSIFY THE BOARD (if it is proposed by
               management); TO INCREASE THE BOARD (if the Board is
                            not declassified) AND TO
                      ELECT ALL OF ASSET VALUE'S NOMINEES.

             IF THE BOARD IS DECLASSIFIED OR THE BOARD IS INCREASED
              AND ASSET VALUE'S NOMINEES RECEIVE THE HIGHEST NUMBER
               OF VOTES CONTROL OF CORTECH WILL TRANSFER TO ASSET
                                     VALUE.
    
     Remember,  Asset Value will not merge Cortech with an Asset Value affiliate
or a company in which Asset  Value is a  stockholder.  Asset  Value  believes it
should gain from any future  acquisition or Merger involving Cortech only to the
extent all  stockholders  benefit.  Asset  Value's  nominees have pledged not to
accept any fees for serving as directors.
- -----------
     6     The Life of Reason, (1905) George Santayana

                                                        

<PAGE>



                             IT'S TIME FOR A CHANGE.
                                VOTE FOR CHANGE.
                              VOTE FOR ASSET VALUE.

                                   PROPOSAL 1
   
                          DECLASSIFICATION OF THE BOARD

     If management  proposes the  Declassification  Amendment,  Asset Value will
support  it.  To  effect  a  declassification,  Article  IX,  Section  1 of  the
Certificate of Incorporation of Cortech must be amended to require all directors
to stand for election each year. The affirmative vote of a majority  outstanding
Shares are required to approve this proposal (9,261,960 Shares).

     If management proposes the  Declassification  Amendment,  Asset Value urges
you to vote FOR the approval of the proposal to amend Article IX,  Section 1, of
the Certificate of  Incorporation  which will require all directors to stand for
election each year, commencing with this Meeting.

                                   PROPOSAL 2

                                INCREASE IN BOARD

     If management does not propose the  Declassification  Amendment or if it is
proposed  but not  approved  by  stockholders,  Asset  Value is asking  for your
support to approve a proposal  to amend  Article 3 Section  3.1 of the Bylaws of
Cortech  to set the  number of  directors  serving  on the  Board at seven.  The
affirmative vote of a plurality of the votes present in person or represented by
proxy and entitled to vote at the meeting are required to approve this proposal.
THIS  PROPOSAL  WILL  NOT BE  SUBMITTED  IF THE  DECLASSIFICATION  AMENDMENT  IS
PROPOSED AND APPROVED.

     If the Board Amendment is submitted,  Asset Value urges you to vote FOR the
approval of the proposal to amend Article 3 Section 3.1 of the Bylaws of Cortech
to set the number of directors to serve on the Board at seven.

                                   PROPOSAL 3

                              ELECTION OF DIRECTORS

     Asset Value is asking for your support to elect its  nominees.  Article II,
Section 2.2 of the Company's Bylaws,  purports to require that to bring business
before the annual meeting, a stockholder must provide timely,  written notice to
the  secretary  describing  the business  and  providing  information  about the
stockholder,   including  name  and  address  and  beneficial   ownership.   The
affirmative vote of a plurality of the votes present in person or represented by
proxy and  entitled  to vote at the  meeting  are  required to elect each of the
Asset Value nominees. If any other proponent, including management, proposes any
nominees, information about them, including

<PAGE>



beneficial  ownership  of Cortech  Shares and  compensation  can be found in the
proponent's proxy statement. If the Declassification  Amendment is approved, all
five  Asset  Value  nominees  will  stand  for  election.  If the  Board  is not
declassified, but the Board Amendment is approved, Asset Value nominee Mathew E.
Hoffman  will  withdraw  as a  candidate  for  election.  If there  are only two
vacancies,  only Paul O. Koether and Mark W. Jaindl will stand for election. The
biographical data, including age, principal occupation or employment,  and other
affiliations and business experience of each Asset Value nominee during the last
five years follows:
    

     Paul  O.  Koether,   age  61,  is  principally  engaged  in  the  following
businesses:  (i) as Chairman  and  director  of Kent  Financial  Services,  Inc.
("Kent")  since  July 1987 and  President  since  October  1990 and the  general
partner since 1990 of Shamrock  Associates,  an investment  partnership which is
the principal  stockholder of Kent and (ii) various positions with affiliates of
Kent,  including Chairman since 1990 and a registered  representative since 1989
of T. R. Winston & Company,  Inc. ("Winston") and since July 1992, a director of
American Metals  Service,  Inc.,  ("AMS") which was an indirect,  majority-owned
subsidiary of Kent before its Shares were  distributed  to Kent's  stockholders.
Mr. Koether also has been Chairman  since April 1988,  President from April 1989
to February  1997 and director  since March 1988 of Pure World,  Inc.,  formerly
American  Holdings,  Inc.,  ("Pure  World") and since  December  1994 has been a
director and since January 1995 has been Chairman of Pure World's majority-owned
subsidiary,  Madis Botanicals, Inc., ("Madis") a manufacturer and distributor of
natural  products.  He is also Chairman and a director of Pure World's principal
stockholder,  Sun Equities  Corporation,  ("Sun") a private company. Mr. Koether
served as Chairman and a director of NorthCorp Realty  Advisors,  Inc., an asset
management  company,  ("NorthCorp")  from June 1992 when it was acquired by Pure
World until August, 1994 when it was merged and renamed Crown NorthCorp, Inc.

     Mark W. Jaindl, age 38, is the President and Chief Executive Officer of the
American Bank of the Lehigh Valley,  a commercial  bank. He has served as Senior
Vice  President  of Pure  World  from June 1992 until May 1995 and as a director
since  October  1994.  He was Senior Vice  President of Madis from December 1994
until May 1995 and a director of Madis since  December 1994 and he has served as
a director of AMS since July 1992.  Mr. Jaindl was a director of NorthCorp  from
June 1992 until  September  1994 and was Interim  President  of  NorthCorp  from
February  1994 until August 1994.  From May 1982 to October 1991 and again since
May 1995 he has  served as Chief  Financial  Officer of Jaindl  Farms,  which is
engaged in  diversified  businesses,  including  the  operation of a 12,000-acre
turkey farm, a mobile home park, a John Deere  dealership and a grain operation.
Mr. Jaindl also served as the Chief Financial Officer of Jaindl Land Company,  a
developer  of  residential,  commercial  and  industrial  properties  in eastern
Pennsylvania.

     John  W.  Galuchie,  Jr.,  age  45,  a  certified  public  accountant,   is
principally engaged in the following businesses: (i) Winston, as President since
January 1990 and director since September 1989; (ii) Kent, in various  executive
positions since 1986 and a director from June 1989 until August 1993; (iii) Pure
World, as Executive Vice President since April 1988,  director from January 1990
until  October 1994 and for more than five years as Vice  President and director
of Sun; (iv) AMS as Vice  President,  Treasurer and a director  since July 1992.
Mr.  Galuchie  served as a director  of Crown  NorthCorp,  Inc.,  the  successor
corporation to NorthCorp from June 1992 to August 1996.

     James L.  Bicksler,  age 60,  is a  Professor  of  Economics  and  Finance,
Graduate School of Management,  Rutgers University, a position he has held since
1969.


                                                    

<PAGE>

   
     Mathew E.  Hoffman,  age 44, is the head of the  litigation  department  of
Todtman,  Nachamie,  Hendler & Spizz P.C., a position he has held since January,
1997.  From May 1994 until  January,  1997 Mr.  Hoffman was a partner of the law
firm of Rosen & Reade. From February 1989 to May 1994, he was a partner of Keck,
Mahin & Cate.  Since  September  1994,  Mr.  Hoffman has served as a director of
Kent.
    

     Asset Value urges you to vote FOR the nominees  described above.  They will
seek to maximize  stockholder  values and pledge to cooperate  with and consider
the proposals of other stockholders.

   
     If  more  than a  majority  of  outstanding  Cortech  Shares  vote  for the
Declassification  Amendment (if it is proposed by  management)  and all of Asset
Value's  nominees are elected,  Asset Value's  nominees will comprise the entire
Board  and  control  will  transfer  to  Asset  Value.  If the  Declassification
Amendment  is not proposed by  management  or if it is proposed but not approved
but a  majority  of Shares  present  by proxy or in person  vote in favor of the
Board Amendment, there will be four vacancies on the Board and the four nominees
receiving  the  highest  vote  (whether  Asset  Value's  nominees  or any  other
proponent's  nominees)  will be  elected  to the Board.  If Asset  Value's  four
nominees are elected,  Asset Value's  nominees will constitute a majority of the
Board and control of Cortech will transfer to Asset Value.

     If the Board  Amendment is not approved,  the two nominees  (whether  Asset
Value's nominees or any other proponent's nominees) receiving the highest number
of votes cast at the meeting will be elected. Asset Value makes no provision for
voting for  management's  nominees or any other nominees,  therefore if you vote
for fewer than all of Asset Value's  nominees,  you will not have an opportunity
to vote for candidates to fill other vacancies to the Board.

     Even if you have voted against  declassifying  the Board or increasing  the
Board please vote for Asset Value's nominees. The nominees receiving the highest
number  of votes  will be  elected.  If the  Declassification  Amendment  is not
proposed  or is  proposed  but not  approved  and  the  Board  Amendment  is not
approved,  two of Asset  Value's  nominees  can still be elected if their  votes
exceed the votes for any other nominees.  Therefore if you agree that it is time
for a change, a real change, VOTE

    YES to the Declassification Amendment if it is proposed and if it is not
               proposed or if it is proposed and not approved then
    
                           YES to the Board Amendment

                                       and

                           FOR Asset Value's nominees

<PAGE>



                                   PROPOSAL 4

                       RATIFICATION OF INDEPENDENT AUDITOR
   
     In the past management has proposed the ratification of Arthur Andersen LLP
as Cortech's  independent  auditor.  If management  again submits this proposal,
information about the matter can be found in management's proxy statement. Asset
Value favors the  ratification of Arthur  Andersen LLP as Cortech's  independent
auditor.


                                   PROPOSAL 5

                     AUTHORIZATION TO VOTE ON OTHER MATTERS

     Asset Value is seeking express authority to vote on any other matters which
come before the Meeting.  Other proponents may submit to stockholders  proposals
yet unknown.  Therefore  Asset Value seeks  authority  to vote on any  proposals
which become known  subsequent to the mailing of this proxy  statement.  If this
authority  is granted,  it means that the proxy can be voted on any other matter
that comes before the meeting without further consultation with, solicitation of
or  disclosure  to the  grantor  of the proxy.  However,  even if you grant this
authority,  remember  you can always  revoke  any proxy at  anytime  even at the
meeting  by  following  the  procedures  outlined  below  under  "REVOCATION  OF
PROXIES".


                       REQUIRED VOTE AND MANNER OF VOTING

     If  management  submits  the  Declassification  Amendment  and more  than a
majority of outstanding Shares vote in favor of it, there will be five vacancies
on the Board and the nominees  receiving the highest vote (whether Asset Value's
nominees or any other proponent's nominees) will be elected to the Board. If the
Declassification  Amendment  is not  proposed or is proposed but is not approved
and more than a majority  of Shares  present by proxy or in person vote in favor
of the Board  Amendment,  there will be four vacancies on the Board and the four
nominees receiving the highest vote (whether Asset Value's nominees or any other
proponent's  nominees) will be elected to the Board.  If the Board  Amendment is
not approved  the two  nominees  (whether  Asset  Value's  nominees or any other
proponent's  nominees) receiving the highest number of votes cast at the meeting
will be elected.

     If more than a  majority  of  Shares  voting  at the  Meeting  vote for the
ratification  of Arthur  Andersen LLP as  Cortech's  independent  auditor,  this
proposal will be approved. If a proxy grants express authority to vote the proxy
on any other matter that comes before the Meeting,  the proxies will be entitled
to vote on any matter without  further  consultation  with,  solicitation  of or
disclosure  to the  grantor  of the  proxy.  If a  proxy  does  not  grant  such
authority,  then the proxy can be voted on other  matters  but not on any matter
which becomes known a reasonable time before the Meeting.




                                                   

<PAGE>



     Valid proxies will be voted as instructed therein,  but absent instructions
on the white proxy card, will be voted FOR the Declassification  Amendment if it
is  proposed.  If the  Declassification  Amendment  is not  proposed or if it is
proposed  and not  approved,  the white  proxy  card will be voted FOR the Board
Amendment.  In all cases,  the white proxy card will be voted FOR Asset  Value's
nominees, FOR the ratification of Arthur Anderson LLP (if it is proposed)and FOR
authority to vote on any other  matter  which comes  before the meeting.  Absent
that express authority the proxy can still be voted on any other matter except a
matter that is known a  reasonable  time  before the  Meeting.  Abstentions  and
broker  non-votes (where a nominee holding Shares for a beneficial owner has not
received voting  instructions  from the beneficial owner on a particular  matter
and the nominee does not vote the Shares)  will be counted in the  determination
of a quorum but will not be counted for or against any proposal.  We urge you to
sign, date and return the white proxy card in the enclosed envelope.  No postage
is required if mailed in the United States.
    
                              SHARES IN STREET NAME

     If you hold your  Cortech  Shares in the name of a brokerage  firm or bank,
your broker or banker cannot vote the Shares until the broker or banker receives
specific  instructions  from you. Please contact the party at the brokerage firm
or bank  responsible  for your account to make sure that a proxy is executed for
your Cortech Shares on the white proxy card.

                              REVOCATION OF PROXIES
   
     If you have executed any proxy card before  receiving this Proxy Statement,
you have every right to change your vote by signing,  dating and  returning  the
enclosed  white  proxy card in the  postage-paid  envelope  provided.  Only your
latest dated proxy will count at the  Meeting.  Any proxy,  including  the proxy
solicited  hereby,  may be  revoked  at  any  time  before  it is  voted  by (i)
submitting a duly  executed  proxy  bearing a later date to the Secretary of the
Company or to Asset  Value,  (ii)  filing  with the  Secretary  of the Company a
written revocation or (iii) attending and voting at the Meeting in person.
    

<PAGE>


                              SOLICITATION EXPENSE
   
     Asset Value,  Mark W. Jaindl and  Frederick J. Jaindl (see Schedule 1) will
bear the cost of preparing,  assembling  and mailing the enclosed form of proxy,
this proxy  statement and other  material which may be sent to  stockholders  in
connection with this solicitation. Officers and regular employees of Asset Value
or its affiliates may solicit proxies by mail, telephone,  telegraph,  facsimile
and personal  interview,  for which no additional  compensation will be paid. In
addition, Asset Value has retained Beacon Hill Partners, Inc. ("Beacon Hill") to
solicit proxies on its behalf. In connection with the solicitation in opposition
to  Cortech,  Asset  Value has  agreed to pay  Beacon  Hill up to  $15,000  plus
expenses,  part of which is a success  fee.  Asset  Value  advanced  Beacon Hill
$3,000 to cover  expenses.  It is  anticipated  that the cost to Asset  Value in
connection  with this  solicitation  (including  filings  in  opposition  to the
Merger) will be approximately $125,000.
    
                                            Very truly yours,


                                            Paul O. Koether
                                            Asset Value Fund Limited Partnership



                                    IMPORTANT

     If your Shares are held in "Street  Name" only your bank or broker can vote
your Shares, and only upon receipt of your specific instructions. Please contact
the person  responsible  for your account and  instruct  them to execute a white
proxy card as soon as possible.

     If you have any questions or need further assistance in voting, please call
John W. Galuchie,  Jr., of Asset Value Fund Limited Partnership collect at (908)
234-1881, or our proxy solicitor:

                           BEACON HILL PARTNERS, INC.
                                 90 BROAD STREET
                            NEW YORK, NEW YORK 10004
                                 (800) 253-3814


<PAGE>


 SCHEDULE 1



              ADDITIONAL INFORMATION ABOUT ASSET VALUE FUND LIMITED
               PARTNERSHIP, MARK W. JAINDL AND FREDERICK J. JAINDL


     Asset  Value  Fund  Limited  Partnership  ("Asset  Value")  is  engaged  in
investing in securities.  The sole general partner of Asset Value is Asset Value
Management,  Inc.  ("Asset  Value  Management").  Asset  Value  Management  is a
wholly-owned  subsidiary  of  Kent  Financial  Services,  Inc.  ("Kent"),  whose
principal  business is the operation of T. R. Winston & Company,  Inc.  ("TRW"),
its wholly-owned  subsidiary.  TRW is a securities broker-dealer registered with
the National  Association of Securities  Dealers,  Inc. Asset Value, Asset Value
Management,  Kent and TRW maintain offices at 376 Main Street,  Bedminster,  New
Jersey 07921.

     Mark W. Jaindl ("Mark Jaindl") is the President and Chief Executive Officer
of the American Bank of the Lehigh  Valley,  a commercial  bank whose  principal
business  address is 4029 West Tilghman Street,  Allentown,  PA 18104 ("American
Bank"). (For additional  information on Mark Jaindl, see PROPOSAL 1, ELECTION OF
DIRECTORS.) Frederick J. Jaindl ("Fred Jaindl") is the sole proprietor of Jaindl
Farms (turkey  farming),  whose  principal  business  address is 3150 Coffeetown
Road,  Orefield,  PA 18069.  Fred Jaindl is Chairman of American Bank.  Mark and
Fred Jaindl are the principal  stockholders of American Bank. Mark Jaindl is the
son of Fred Jaindl.

     As of March  23,  1998,  Asset  Value  holds  2,000,000  Cortech  Shares or
approximately 10.80% of the total Cortech Shares outstanding.  Mark Jaindl holds
250,000 Cortech  Shares,  or  approximately  1.35% and Fred Jaindl holds 520,000
Cortech Shares or approximately  2.80%. Asset Value, Mark Jaindl and Fred Jaindl
disclaim the beneficial ownership of each other's Cortech Shares.  Purchases and
sales of Cortech  Shares by Asset Value,  Mark Jaindl and Fred Jaindl are listed
on Schedule 2.

     During the past ten years, none of Asset Value,  Mark Jaindl,  Fred Jaindl,
Asset Value  Management,  Kent, TRW, or the Directors and Executive  Officers of
Kent has been convicted in a criminal proceeding.



<PAGE>


<TABLE>

<CAPTION>
                            DIRECTORS AND EXECUTIVE OFFICERS
                            OF KENT FINANCIAL SERVICES, INC.

                                                                 Percent of Direct or
                                                                  Indirect Ownership
 Name and Address                 Position and Office          of Voting Securities of
of Beneficial Owner               Currently Held            Kent Financial Services, Inc.
- -------------------               -------------------       -----------------------------
<S>                               <C>                                <C>
Paul O. Koether                   Chairman, Director                 44.90%
 211 Pennbrook Road                and President
 Far Hills, NJ 07931

John W. Galuchie, Jr.             Vice President and
  376 Main Street                  Treasurer                          2.32%
 Bedminster, NJ 07921

Mark Koscinski                    Vice President                         *
  376 Main Street
  Bedminster, NJ 07921

M. Michael Witte                  Director                            1.15%
 1120 Granville Avenue
 Suite 102
 Los Angeles, CA 90049

Casey K. Tjang                    Director                               *
 56 Hall Drive
 Clark, NJ 07066

Mathew E. Hoffman                 Director                               *
 62 Rosehill Avenue
 New Rochelle, NY 10804
_________________________________________
*Less than 1 percent
 

</TABLE>

<PAGE>



                                                                      SCHEDULE 2

<TABLE>


                      PURCHASES AND SALES OF CORTECH SHARES

ASSET VALUE<F1>

Dates purchased       Number of shares purchased    Price per share<F2>    Total
- ---------------       --------------------------    ---------------      -------------
<S>                    <C>                            <C>                <C>   
07/25/97                  20,000                      $.61375            $   12,275.00
07/31/97                   6,700                       .625                   4,321.50
08/06/97                   9,100                       .6875                  6,256.25
08/07/97                   2,600                       .6875                  1,787.50
08/08/97                   3,100                       .6875                  2,131.25
08/12/97                 458,500                       .6875                315,218.75
08/15/97                   5,100                       .6875                  3,506.25
08/18/97                   5,200                       .6689                  3,478.28
08/19/97                   3,200                       .65625                 2,100.00
08/20/97                   9,000                       .65625                 5,906.25
08/21/97                   8,500                       .6875                  5,843.75
08/27/97                 146,800                       .6875                103,861.00
09/08/97                  22,000                       .6875                 15,125.00
09/11/97                  20,000                       .703125               14,062.50
09/15/97                  26,000                       .703125               18,281.25
09/16/97                   7,700                       .703125                5,414.06
09/17/97                   4,000                       .703125                2,812.50
09/24/97                  31,425                       .703125               22,095.70
09/30/97                  89,600                       .703125               63,000.00
10/01/97                  56,000                       .703125               39,375.00
10/02/97                   1,475                       .703125                1,037.11
10/06/97                  25,000                       .6875                 17,187.50
10/07/97                   2,000                       .6875                  1,375.00
10/07/97                   6,500                       .71875                 4,671.88
10/07/97                 336,000                       .703125              236,250.00
10/08/97               1,556,757                       .65                1,011,892.05
10/08/97                   5,000                       .75                    3,750.00
10/08/97                  20,000                       .71875                14,375.00
10/09/97                   2,000                       .71875                 1,437.50
10/09/97                   5,000                       .765625                3,828.13
10/09/97                  18,500                       .75                   13,875.00
10/10/97                   4,500                       .78125                 3,515.63
10/14/97                   1,000                       .78125                   781.25
10/14/97                   6,000                       .8125                  4,875.00
10/28/97                  15,000                       .6875                 10,312.50
10/30/97                  13,000                       .6875                  8,937.50
10/30/97                  12,000                       .65625                 7,875.00
11/03/97                   3,700                       .6875                  2,543.75
11/04/97                   4,900                       .65625                 3,215.63
11/05/97                  12,000                       .6875                  8,250.00
11/05/97                   2,500                       .65625                 1,640.63
11/07/97                  11,300                       .65625                 7,415.63
11/10/97                  58,343                       .65625                38,287.59
11/11/97                  10,500                       .65625                 6,890.63

                                                         (table continued on next page)

<PAGE>



(table continued from previous page)


Dates purchased       Number of shares purchased    Price per share<F2>    Total
- ---------------       --------------------------    ---------------      -------------
11/14/97                   4,000                       .65625                 2,625.00
11/14/97                   8,500                       .6875                  5,843.75
11/17/97                   9,700                       .65625                 6,365.63
11/18/97                  11,300                       .65625                 7,415.63
11/24/97                   5,000                       .640625                3,203.13
                       ---------                                         -------------
                       3,106,000                                         $2,086,524.84
                       ---------                                         -------------

Dates sold            Number of shares sold         Price per share<F2>    Total
- ----------            -------------------------     ---------------      -------------
08/13/97                   3,000                      $.6875             $    2,062.43
08/29/97                   3,000                       .71875                 2,156.17
09/17/97                   2,000                       .71875                 1,437.45
09/30/97                   3,000                       .71875                 2,156.17
10/07/97                 325,000                       .65                  211,242.95
02/10/98                 770,000                       .6705                516,285.00
                       ---------                                         -------------
                       1,106,000                                            735,340.17<F3>
                       ---------                                         -------------
                       2,000,000                                         $1,319,425.00
                       =========                                         =============


MARK W. JAINDL

Dates purchased       Number of shares purchased    Price per share<F2>    Total
- ---------------       --------------------------    ---------------      -------------
02/10/98                 250,000                       .6705             $  167,625.00
                      ==========                                         =============



FREDERICK J. JAINDL

Dates purchased       Number of shares purchased    Price per share<F2>    Total
- ---------------       --------------------------    ---------------      -------------
02/10/98                 520,000                       .6705             $  348,660.00
                      ==========                                         =============



<FN>
<F1>     Excludes the purchase for an aggregate  amount of $11,251.52 on October
         8, 1997 of warrants to purchase 562,576 shares of Cortech stock,  which
         were contributed back to the capital of Cortech on October 18, 1997.
         No shares were purchased with or are being held with borrowed funds.

<F2>     Price excludes brokerage commissions, if any.

<F3>     Reflects loss on sale of $31,759.67.
</FN>
</TABLE>
                                                            
<PAGE>

REVISED PRELIMINARY OPPOSITION PROXY CARD

                                  Cortech, Inc.
                 Annual Meeting To Be Held On September 4, 1998
       This Proxy Is Being Solicited On Behalf Of Asset Value Fund Limited
                          Partnership ("Asset Value")
   
     The undersigned hereby appoints Paul O. Koether, Mark W. Jaindl and John W.
Galuchie, Jr. or any of them, the undersigned's proxies, each with full power of
substitution,  to vote  all  Shares  of  Common  Stock  of  Cortech,  Inc.  (the
"Company") which the undersigned would be entitled to vote if personally present
at the Annual Meeting of  Stockholders of the Company to be held on September 4,
1998 at 9:00 a.m.  local time at the  Renaissance  Hotel,  3801  Quebec  Street,
Denver, Colorado on September 4, 1998 (the "Meeting") and at any adjournments or
postponements  thereof and,  without limiting the generality of the power hereby
conferred,  the proxy  nominees  named  above and each of them are  specifically
directed to vote as indicated below.

     WHERE A CHOICE IS INDICATED,  THE SHARES  REPRESENTED BY THIS PROXY WILL BE
VOTED AS SPECIFIED.  IF NO CHOICE IS INDICATED,  THE SHARES  REPRESENTED BY THIS
PROXY WILL BE VOTED

1.   FOR THE AMENDMENT TO THE CERTIFICATE OF INCORPORATION DECLASSIFYING
     THE BOARD (IF IT IS PROPOSED BY MANAGEMENT);
2.   FOR THE AMENDMENT TO THE BYLAWS TO INCREASE THE NUMBER OF DIRECTORS
     TO SEVEN IF DECLASSIFICATION IS NOT PROPOSED OR IS NOT APPROVED;
3.   FOR THE ELECTION OF ASSET VALUE'S NOMINEES AS DIRECTORS;
4.   FOR THE RATIFICATION OF ARTHUR ANDERSEN LLP (IF IT IS PROPOSED BY
     MANAGEMENT);
5.   FOR THE AUTHORIZATION TO VOTE ON ANY OTHER MATTERS WHICH COME BEFORE
     THE MEETING.

     Even if express  authority to vote on any other  matters is withheld,  this
proxy confers  discretionary  authority on the proxy  nominees  named herein and
each of them to vote on such  amendments,  variations or other  business  except
those matters which become known a reasonable time before the Meeting.

IF MANAGEMENT  PROPOSES IT, ASSET VALUE RECOMMENDS A VOTE FOR  DECLASSIFYING THE
BOARD OF DIRECTORS.

1. To amend  Article IX Section 1 of the  Certificate  of  Incorporation  of the
Company to  eliminate  the current  classification  of the Board and require all
directors to stand for election each year.

______FOR               ______AGAINST                ______ABSTAIN


IF  MANAGEMENT  DOES  NOT  PROPOSE DECLASSIFICATION OR IF DECLASSIFICATION IS
NOT APPROVED, ASSET VALUE RECOMMENDS A VOTE FOR INCREASING THE NUMBER OF
DIRECTORS FROM FIVE TO SEVEN.
    

2. To amend Article 3 Section 3.1 of the  Company's  Bylaws to set the number of
directors to serve on the Board of Directors at seven.

           
______FOR               ______AGAINST                ______ABSTAIN


<PAGE>


ASSET VALUE RECOMMENDS A VOTE FOR THE ASSET VALUE NOMINEES.
   
3. To elect Asset Value's  nominees,  Paul O. Koether,  Mark W. Jaindl,  John W.
Galuchie, Jr., James L. Bicksler, and Mathew E. Hoffman to serve as Directors.

______FOR all nominees (except as marked to the contrary).

______WITHHELD authority to vote for all nominees.

For, except vote withheld from the following nominee(s):

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

ASSET VALUE RECOMMENDS A VOTE FOR THE RATIFICATION OF ARTHUR ANDERSEN LLP.

4. To ratify the appointment of Arthur Andersen LLP as independent  auditors for
the year ended December 31, 1998.

______FOR               ______AGAINST                ______ABSTAIN

        
5. ASSET VALUE  RECOMMENDS A VOTE GIVING EXPRESS  AUTHORIZATION  TO VOTE ON SUCH
OTHER  MATTERS AS MAY PROPERLY COME BEFORE THE MEETING OR ANY  POSTPONEMENTS  OR
ADJOURNMENTS  OF  THE  MEETING  WITHOUT  FURTHER  DISCLOSURE,   CONSULTATION  OR
SOLICITATION.

______GRANTED          ______WITHHELD                ______ABSTAIN
    

     The undersigned  acknowledges  receipt of the accompanying Notice of Annual
Meeting of  Stockholders  and Proxy  Statement for the  _________________,  1998
meeting.


                                      Dated:______________________________, 1998


- ------------------------------------------
                                      Signature of Stockholder


- ------------------------------------------
                                      Signature of Stockholder if Shares held in
                                      more than one name (Please sign exactly as
                                      name or names appear hereon. Full title of
                                      one  signing  in  representative  capacity
                                      should   be   clearly   designated   after
                                      signature.  If a corporation,  please sign
                                      in full corporate  name  by  President  or
                                      other   authorized   officer(s).     If  a
                                      partnership,  please  sign  in partnership
                                      name by authorized person.  If stock is in
                                      the name of  two  or  more  persons,  each
                                      should  sign.  Joint  owners  should  each
                                      sign.  Names of all joint holders should
                                      be written even if signed by only one.)
   
ASSET VALUE RECOMMENDS A VOTE FOR PROPOSALS 1, 2, 3, 4 AND 5.
    
PLEASE  PROMPTLY  COMPLETE,  DATE,  SIGN AND  MAIL  THIS  PROXY IN THE  ENCLOSED
POSTAGE-PAID ENVELOPE.


REVISED PRELIMINARY OPPOSITION PROXY MATERIAL

                      ASSET VALUE FUND LIMITED PARTNERSHIP
                          376 MAIN STREET, P.O. BOX 74
                              BEDMINSTER, NJ 07921
                                 (908) 234-1881



                                                                    July__, 1998

Dear Fellow Cortech Stockholder:

   
     We and two other  investors  ("Asset Value") own  approximately  15% of the
outstanding shares ("Cortech Shares") of Cortech, Inc. ("Cortech"),  which makes
us by far Cortech's  largest  stockholders.  We believe that the incumbent Board
has exercised poor judgment in governing Cortech and that Asset Value's nominees
would provide better  leadership  because they are not tied to what we think are
the  failures of the past.  That is why we are  seeking  control of the Board by
electing our nominees to the Board.1

     At the end of fiscal  1997,  Cortech  had net assets of only $15.4  million
after  losing  over $70  million  since  1993 in a  failed  attempt  to  exploit
Cortech's  technology.  The Board then proceeded to expend $673,000 of Cortech's
limited  resources  promoting a merger with  BioStar,  Inc.  (the  "Merger"),  a
company  with a $5.6  million  negative net worth even though Asset Value warned
the  Board  from  the  start  that  the  Merger  was  not  in the  interests  of
stockholders2 who, Asset Value said, would never approve such a transaction. The
Merger was  canceled  on May 7, 1998.  ONLY ASSET VALUE WAS WILLING TO SPEND ITS
TIME AND MONEY TO PUBLICLY OPPOSE THE MERGER!

       We ask you. Do you want Cortech led into the future by an incumbent
              Director or any other nominee connected to this past?

- --------
     1    Asset Value is also asking stockholders to approve an amendment to the
By-laws which would increase the number of directors from five to seven creating
a total of four vacancies. If these four vacancies are filled with Asset Value's
nominees,  control of Cortech  will  transfer  to Asset  Value.  Management  has
indicated that it may propose to declassify the Board which, if approved,  would
mean all five seats on the Board would be open. In this case,  Asset Value would
seek to elect five nominees who, if elected, would comprise the entire Board. If
the Board is not  declassified or increased,  Asset Value will seek to elect two
of its nominees to fill the two vacancies which would then be available.
    
     2    Asset Value has not retained an independent  financial adviser and its
conclusions  are  solely  based  on the  opinion  of its  manager,  Asset  Value
Management,  Inc. which was reached after reviewing  management's proxy material
for the Merger, including the opinion of management's financial adviser.


<PAGE>



                              Don't take a chance.
                               Vote for a change.
                        Vote for Asset Value's nominees!

                                 MORE RED INK !
   
     After the  termination  of the  Merger,  Cortech's  Form 10-Q for the first
quarter of 1998 revealed that Cortech's  losses not only continued but increased
compared to last year. In a quarter with No research and development  activities
and No revenues,  Cortech still had  approximately  15 full-time3  employees and
general  and  administrative  expenses of  $1,522,000,  of which,  according  to
Cortech,  merger expense only accounted for  approximately  $673,000.  After the
Form10-Q was filed Kenneth Lynn, the former CEO, left Cortech,  taking with him,
what we would call,  a  "departure  bonus" of almost  $500,000,  another 3.5% of
Cortech's  remaining  cash of $14.3  million.  The  calculation  of the $500,000
departure  bonus was  derived by adding 20 months of salary  ($442,000),  future
consulting fees of an undisclosed  amount and health  insurance  coverage for 18
months  estimated at $600 per month as reported in  Cortech's  Form 8-K filed on
May 18, 1998.

                         What would this Board do next?

     Well one  thing it would not do -at  least  not  voluntarily-  is call this
Annual  Meeting  within the 13 months  required by Delaware  law.  Instead Asset
Value had to file a lawsuit to compel the Board to let  stockholders  decide who
will determine  Cortech's future. THIS MEETING WAS ORDERED BY THE CHANCERY COURT
OF DELAWARE ONLY AFTER A LAWSUIT WAS FILED BY ASSET VALUE TO COMPEL A MEETING.

     Ask yourself why the Cortech Board would spend Cortech's  limited resources
to defend against a demand to hold an annual meeting as required by law?




- ----------
     3    Cortech  does not  disclose  whether  there are  additional  part-time
employees and consultants  still hanging on. Asset Value considers a shutdown of
Cortech an  alternative  which must be considered,  particularly  in view of the
continued  losses  reported in the first quarter of 1998. Such a course however,
has risks,  including the possible further  diminishment of Cortech's technology
and the possible  cessation of Cortech as a going  concern.  The matter would be
further  evaluated  with  current  employees  once Asset Value  gained  control,
therefore, there is no assurance that Cortech would be shut down.



<PAGE>



     We think one reason is because the Board and its  nominees did not want you
to ask this question:
    
                 ARE YOU BETTER OFF NOW THAN YOU WERE FIVE YEARS
                                      AGO?

     In what we think is the  biggest  bull  market in  history,  Cortech  Stock
prices  have  declined  from $18.25 per share in 1993 to $.50 per share in 1998,
making Cortech, by any comparison,  in our view, one of the poorest stock market
performers during this period. --AND THAT'S NO BULL!

   
                                  COMPARISON OF
                CORTECH'S STOCK PERFORMANCE (NASDAQ SYMBOL-CRTQ)
                                       TO
                      THE NASDAQ BIOTECHNOLOGY INDEX (IXBT)
                                     AND THE
                AMERICAN STOCK EXCHANGE BIOTECHNOLOGY INDEX (BTK)

 [GRAPH THE ABOVE]

<TABLE>
<CAPTION>

               Cortech         IXBT        BTK
               ------          -----      ------
<S>           <C>             <C>         <C>   
1993          $18.25          197.88      115.78

1994           14.25          161.40       82.06

1995            3.65625       304.30      133.77

1996            3.8125        314.48      144.56

1997            2.03125       304.89      163.28

7/17/1998        .50          335.15      144.16
    
</TABLE>


                              NOT A PRETTY PICTURE!




<PAGE>


   
                              TOO LITTLE, TOO LATE

     Seven months after Asset Value first asked for representation on the Board;
long after the Board was sued for misfeasance;  after Cortech had spent $673,000
on the failed Merger; after Cortech had lost another  approximately $3.4 million
from operations (from September 30, 1997 through March 31, 1998), finally on May
11, 1998 the Cortech  Board  expressed an interest in meeting with Asset Value's
manager,  Paul Koether. By this time, Asset Value had already spent or committed
significant  amounts of its own funds  (estimated to exceed  $125,000  including
counsel fees and management time) in opposing the Merger and in securing control
of the  Board  because  it  believed  that a change in course  for  Cortech  was
absolutely  essential  and because it believed  that a Board  controlled  by the
incumbents would not embrace the necessary changes. Asset Value thought that the
Board's offer to meet, in and of itself, was too little too late.

                  THE BOARD'S VERSION OF STOCKHOLDER DEMOCRACY

     This Board  called  this  Meeting  only after Asset Value filed to have the
Delaware courts compel the Board to hold the Meeting.  We ask you: Why would the
Board fail to call a meeting  within the time  required by law? Why is the Board
spending  your money and our money to delay  what we believe  will be the day of
reckoning when the  stockholders  will finally be given a choice between what in
our view,  is the  failed  past and what we think  will be a better  future.  In
making this choice, we ask you to consider that Asset Value has committed not to
seek to merge  Cortech  with any  affiliate or entity in which Asset Value is an
investor. Asset Value intends to benefit from its Cortech investment only to the
same extent other stockholders  benefit.  Moreover Asset Value's nominees do not
intend to take any fees for managing Cortech.

                               SAME OLD; SAME OLD

     Bert Fingerhut,  an incumbent  Cortech  director,  replaced Kenneth Lynn as
CEO. Mr.  Fingerhut  responded to Asset Value's request for majority  control of
the Board by offering to  declassify  the Board and to designate one Asset Value
nominee on a five member  slate.  In addition to himself and  incumbent  Charles
Cohen,  Mr.  Fingerhut's   proposed  slate  would  include  stockholders  Edward
Finkelstein and John Papp. Mr. Fingerhut  described Messrs  Finkelstein and Papp
as  newcomers  but we  believe  they  are  two  cronies  of  management.  As Mr.
Fingerhut,  himself disclosed,  "As you know, Mr. Finkelstein and his associates
have a significant ownership stake in Cortech" (although Mr. Finkelstein and his
unnamed  associates  presumably  own less than 5% since no Schedule 13D has been
filed) and "Dr. Papp is familiar with Cortech's  intellectual  property from his
service as a Director of CDC, a research and development  affiliate of Cortech."
(emphasis added).
    

<PAGE>



                         TIME AND MONEY ARE RUNNING OUT!
   
     On May 18, 1998, CEO Kenneth Lynn left Cortech. We believe that Mr Lynn was
made a scapegoat for what we think is Cortech's prior mismanagement.  But in our
opinion, Mr. Lynn was a symptom of what is wrong with Cortech not the source, at
least, in our view, not the only source.  In the past five years  (including the
first quarter of 1998),  Cortech has lost over $70 million,  and as of March 31,
1998, had cash of only $14.3 million.  We ask, does Lynn's departure absolve the
incumbent Board members of their  responsibility  for these losses? We think the
answer is a resounding No!

                  PICTURE OF HOUR GLASS WITH CONTENTS READING



                                                             CASH REMAINING AT
                                                             MARCH 31, 1998
                                                             $14.3 million





                                                             CASH LOSSES FROM
                                                             INCEPTION (1982) TO
                                                             DATE $86 million!!!






     And we ask where were Mr. Fingerhut's recommended nominees, Mr. Finkelstein
and Dr. Papp while Cortech was losing all this money? Right behind the Board, we
think!
    


<PAGE>



                         THE SHAPE OF THINGS TO COME 4

     So, what will Asset Value do if it obtains control of the Cortech Board? We
believe that once the Cortech Board determined to change control of Cortech,  it
should have sought competitive transactions more aggressively, by advertising in
the financial media, by engaging an investment banker from the outset to solicit
merger  partners and by publicly  stating that the Board was  conducting an open
bidding process for control of Cortech.  If elected Asset Value's  nominees will
take these  steps.  Asset Value has no specific  merger  partner in mind and has
considered possible alternatives for the future of Cortech only in a preliminary
way. In the course of its own business,  however, Asset Value constantly reviews
investment  opportunities and in connection with this process has seen companies
which might be attractive  strategic  partners for Cortech  although  additional
analysis would be required to determine whether any of these companies are a fit
with Cortech.

   
     The  principal  standards  for seeking a candidate  would be balance  sheet
quality and positive earnings.  Asset Value also believes that a private company
which seeks a public market or a public company which needs Cortech's  assets to
qualify  for  NASDAQ,  would  consider  these  attributes  as  well  as  cash in
calculating  Cortech's value. As of March 31, 1998,  Cortech's total assets were
$14.9 million of which cash and cash equivalents were $14.3 million. Asset Value
is not sure,  however,  that there are  potential  acquisitions  or mergers that
would be attractive for Cortech. One thing is certain however,  Asset Value will
not seek to merge  Cortech with any  affiliate or entity in which Asset Value is
an investor.  Asset Value intends to benefit from its Cortech investment only to
the same extent other stockholders benefit.
    
     Now it is time  for the  Annual  Meeting;  time  for  the  stockholders  to
re-evaluate  the past  leadership  of Cortech and time to consider a change.  We
believe that Asset Value has the same interests as all other  stockholders which
it believes will be a change from this management - a substantial change.

                              PLEASE ASK YOURSELF:
   
                 DO YOU WANT A BOARD COMPRISED OF ANY DIRECTORS
                  WHO SERVED WHILE CORTECH WAS LOSING ALL THIS
                                     MONEY?

               DO YOU WANT FUTURE TRANSACTIONS SELECTED BY ANYONE
              WHO EITHER APPROVED THE MERGER OR STOOD SILENT WHILE
                            THE MERGER MOVED FORWARD?

                  WE HOPE YOUR ANSWER WILL BE : CERTAINLY NOT!
    
               PLEASE SEND THE WHITE PROXY CARD TO ASSET VALUE AND


- --------
         4H.G. Wells


<PAGE>

   
                VOTE TO DECLASSIFY THE BOARD(if it is proposed by
               management); TO INCREASE THE BOARD (if the Board is
                            not declassified) AND TO
                          ELECT ASSET VALUE'S NOMINEES.

                    IT'S TIME FOR A CHANGE; VOTE FOR CHANGE;
                              VOTE FOR ASSET VALUE.

                          SEND IN THE WHITE PROXY CARD
             VOTE YES TO DECLASSIFY THE BOARD (If it is proposed by
          management) OR TO INCREASE THE BOARD (if declassification is
                         not proposed) BUT IN ANY EVENT:

                     VOTE FOR ALL OF ASSET VALUE'S NOMINEES!
    
                                    IMPORTANT

     If your shares are held in "Street  Name" only your bank or broker can vote
your shares, and only upon receipt of your specific instructions. Please contact
the person  responsible  for your account and  instruct  them to execute a white
proxy card as soon as possible.

     If you have any questions or need further assistance in voting, please call
John W. Galuchie, Jr., of Asset Value Fund Limited Partnership collect at
(908) 234-1881, or our proxy solicitor:

                           BEACON HILL PARTNERS, INC.
                                 90 BROAD STREET
                            NEW YORK, NEW YORK 10004
                                 (800) 253-3814






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