THERATECH INC /DE/
SC 13G/A, 1998-11-09
PHARMACEUTICAL PREPARATIONS
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<PAGE>   1
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                                  UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                               (Amendment No. 6)*

                                 TheraTech, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                  Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    883383101
- --------------------------------------------------------------------------------
                                 (CUSIP Number)







*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).




<PAGE>   2
CUSIP NO. 883383101                SCHEDULE 13G            Page  2  of  4  Pages
         ---------------------                              -----    -----      

  (1)     NAMES OF REPORTING PERSON                 
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                

          Dinesh C. Patel
          ---------------------------------------------------------------------

  (2)     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*         (a)   [   ]
          Not applicable                                            (b)   [   ]
          
          --------------------------------------------------------------------- 

  (3)     SEC USE ONLY

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

  (4)     CITIZENSHIP OR PLACE OF ORGANIZATION                      

          U.S. Citizen
          ---------------------------------------------------------------------

                       (5)     SOLE VOTING POWER                    
  NUMBER OF                    0
   SHARES              --------------------------------------------------------
 BENEFICIALLY          (6)     SHARED VOTING POWER                  
  OWNED BY                     2,897,428
    EACH               --------------------------------------------------------
  REPORTING            (7)     SOLE DISPOSITIVE POWER               
 PERSON WITH                   0
                       --------------------------------------------------------
                       (8)     SHARED DISPOSITIVE POWER             
                               2,897,428
                       --------------------------------------------------------

  (9)     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON         

          2,897,428
          ---------------------------------------------------------------------

 (10)     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
          SHARES*                                                         [   ]

          Not applicable
          ---------------------------------------------------------------------

 (11)     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9           

          13.3%
          ---------------------------------------------------------------------

 (12)     TYPE OF REPORTING PERSON*

          IN
          ---------------------------------------------------------------------
                    *SEE INSTRUCTIONS BEFORE FILLING OUT!




<PAGE>   3





ITEM 1. ISSUER

        (a)    NAME OF ISSUER: TheraTech, Inc.

        (b)    ADDRESS OF ISSUER'S PRINCIPLE EXECUTIVE OFFICES: 417 Wakara Way 
               Salt Lake City, Utah 84108 

ITEM 2. REPORTING PERSON INFORMATION

        (a)    NAME OF PERSON FILING: Dinesh C. Patel

        (b)    ADDRESS OF PRINCIPAL BUSINESS OFFICE:
               417 Wakara Way
               Salt Lake City, Utah 84108

        (c)    CITIZENSHIP:
               United States of America

        (d)    TITLE OF CLASS OF SECURITIES:
               Common Stock

        (e)    CUSIP NUMBER:
               883383101

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULES 13d-1(b), OR 13d-2(b),
        CHECK WHETHER THE PERSON FILING IS A 
        Not applicable

ITEM 4. OWNERSHIP

               (a)    AMOUNT BENEFICIALLY OWNED:
                      2,897,428

               (b)    PERCENT OF CLASS:
                      13.3%

               (c)    NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS:

                      (i) SOLE POWER TO VOTE OR TO DIRECT THE VOTE:
                          0




<PAGE>   4


                      (ii)  SHARED POWER TO VOTE OR TO DIRECT THE VOTE:

                            2,897,428 (which includes presently exercisable
                            options to purchase 187,001 shares, 75,000 shares
                            owned by Kalpana Patel (spouse) and 77,000 shares
                            owned by the Dinesh and Kalpana Patel Foundation, of
                            which the Reporting Person is a director). As an
                            inducement to Watson Pharmaceuticals, Inc., a Nevada
                            corporation ("Watson"), to enter into an Agreement
                            and Plan of Merger dated October 23, 1998 (the
                            "Merger Agreement"), among Watson, Jazz Merger
                            Corp., a Delaware corporation and wholly-owned
                            subsidiary of Watson ("Watson Sub") and TheraTech,
                            Inc., a Delaware Corporation (the "Issuer"), whereby
                            Watson Sub will be merged with and into the Issuer
                            (the "Merger"), the Reporting Person became a party
                            to a certain voting agreement dated as of October
                            23, 1998 with Watson (the "Voting Agreement"). By
                            executing the Voting Agreement, the Reporting Person
                            has irrevocably appointed Watson (or any nominee of
                            Watson) as his lawful attorney and proxy. Such proxy
                            gives Watson the limited right to vote each of the
                            shares of common stock of the Issuer beneficially
                            owned by the Reporting Person to approve the Merger
                            and Merger Agreement. The Voting Agreement
                            terminates upon the earlier to occur of (i) such
                            date and time as the Merger shall become effective
                            in accordance with the terms and provisions of the
                            Merger Agreement, and (ii) the date of termination
                            of the Merger Agreement. The foregoing summary of
                            the Voting Agreement is qualified in its entirety by
                            reference to the copy of the form of Voting
                            Agreement included as Exhibit A to this Schedule 13G
                            and incorporated herein in its entirety by
                            reference.

                      (iii) SOLE POWER TO DISPOSE OR TO DIRECT THE DISPOSITION
                            OF:

                            0

                      (iv)  SHARED POWER TO DISPOSE OR TO DIRECT THE DISPOSITION
                            OF:

                            2,897,428 (which includes presently exercisable
                            options to purchase 187,001 shares, 75,000 shares
                            owned by Kalpana Patel (spouse) and 77,000 shares
                            owned by the Dinesh and Kalpana Patel Foundation, of
                            which the Reporting Person is a director). The
                            voting agreement prohibits the reporting person from
                            making dispositions of shares without Watson's prior
                            consent.

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

        Not applicable




<PAGE>   5



ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON

        Not applicable

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
        SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY

        Not applicable

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

        Not applicable

ITEM 9. NOTICE OF DISSOLUTION OF GROUP

        Not applicable

ITEM 10. CERTIFICATION

        Not applicable



                                    SIGNATURE

        After reasonably inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

                                           Date:  November 9, 1998


                                                  s/Dinesh C. Patel
                                                  ------------------------------
                                                  Dinesh C. Patel






<PAGE>   6
                                                                       EXHIBIT A


                                VOTING AGREEMENT

        VOTING AGREEMENT, dated as of October 23, 1998, between Watson
Pharmaceuticals, Inc., a Nevada corporation ("Parent"), and Dinesh C. Patel,
Ph.D. (the "Stockholder").

        WHEREAS, Parent and Theratech, Inc., a Delaware corporation (the
"Company"), propose to enter into an Agreement and Plan of Merger, dated the
date hereof (as the same may be amended or supplemented, the "Merger Agreement")
providing for the merger of Jazz Merger Corp., a Delaware corporation and
wholly-owned subsidiary of Parent ("Subsidiary"), with the Company (the
"Merger");

        WHEREAS, Stockholder is the record and beneficial owner of 2,687,926*
shares of common stock, par value $.01 per share, of the Company (the "Company
Common Stock"); such securities, as they may be adjusted by stock dividend,
stock split, recapitalization, combination or exchange of shares, merger,
consolidation, reorganization or other change or transaction of or by the
Company, together with securities that may be acquired after the date hereof by
Stockholder, including Company Common Stock issuable upon the exercise of
options to purchase Company Common Stock (as the same may be adjusted as
aforesaid), being collectively referred to herein as the "Securities"; and

        WHEREAS, as a condition to their willingness to enter into the Merger
Agreement, Parent and Subsidiary have requested that the Stockholder enter into
this Agreement. Capitalized terms not otherwise defined herein shall have the
meanings ascribed to them in the Merger Agreement.

        NOW, THEREFORE, to induce Parent and Subsidiary to enter into, and in
consideration of them entering into, the Merger Agreement, and in consideration
of the premises and the representations, warranties and agreements contained
herein and intending to be legally bound hereby, the parties hereby agree as
follows:

1.      Covenants of the Stockholder. Stockholder agrees as follows:

        (a)    Stockholder shall not, except as contemplated by the terms of
               this Agreement, (i) sell, transfer, pledge, assign or otherwise
               dispose of, or enter into any agreement, option or other
               arrangement (including any profit sharing arrangement) or
               understanding with respect to the sale, transfer, pledge,
               assignment or other disposition of, the Securities to any person
               other than Parent or Parent's designee; (ii) enter into any
               voting arrangement, whether by proxy, voting agreement, voting
               trust, power-of-attorney or otherwise, with respect to the
               Securities or (iii) take any other action that would in any way
               restrict, limit or interfere with the performance of its
               obligations hereunder or the transactions contemplated hereby;

* A portion of these shares are pledged to secure borrowings by Dr. Patel. Dr.
Patel has retained voting rights on the pledged shares. In addition, Dr. Patel
holds options to purchase 175,002 shares.



<PAGE>   7



               provided, however, that any Stockholder that is an individual may
               transfer all or part of his or her Securities to any sibling or
               any other member of his or her immediate family, any of his or
               her lineal descendants or any trust for the benefit of any of
               them, if the recipient of the Securities agrees in advance in
               writing delivered to Parent to be bound by this Agreement.

        (b)    Subject to Section 9 hereof, except as specifically provided in
               the Merger Agreement, until the Merger is consummated or the
               Merger Agreement is terminated, the Stockholder shall not, nor
               shall the Stockholder permit any investment banker, financial
               adviser, attorney, accountant or other representative or agent
               acting on behalf of or at the direction of the Stockholder (a
               "Stockholder Representative") to, directly or indirectly (i)
               solicit, initiate or encourage (including by way of furnishing
               information), or take any other action designed or reasonably
               likely to facilitate, any inquiries or the making of any proposal
               which constitutes, or may reasonably be expected to lead to, any
               Alternative Proposal (as defined in the Merger Agreement) or (ii)
               participate in any discussions or negotiations regarding any
               Alternative Proposal. Without limiting the foregoing, it is
               understood that any violation of the restrictions as set forth in
               the preceding sentence by a Stockholder Representative shall be
               deemed to be a violation of this Section 1(b) by the Stockholder.

        (c)    At any meeting of stockholders of the Company called to vote upon
               the Merger and the Merger Agreement or at any adjournment thereof
               or in any other circumstances upon which a vote, consent or other
               approval (including by written consent) with respect to the
               Merger and the Merger Agreement is sought from the stockholders
               of the Company, the Stockholder shall vote (or cause to be voted)
               Stockholder's Securities in favor of approving the Merger, the
               adoption of the Merger Agreement and the approval of the other
               transactions contemplated by the Merger Agreement and the calling
               of a special meeting of the stockholders of the Company to
               consider any of the foregoing. At any meeting of stockholders of
               the Company or at any adjournment thereof or in any other
               circumstances upon which the Stockholder's vote, consent or other
               approval is sought, Stockholder shall vote (or cause to be voted)
               Stockholder's Securities against (i) any Alternative proposal, or
               (ii) any amendment of the Company's Certificate of Incorporation
               or by-laws or other proposal or transaction involving the Company
               or any of its subsidiaries or any motion at a meeting of
               stockholders of the Company, which amendment or other proposal or
               transaction or motion would in any manner impede, frustrate,
               prevent or nullify, the Merger, the Merger Agreement or any of
               the other transactions contemplated by the Merger Agreement
               (collectively "Frustrating Transactions").



<PAGE>   8

2.      Grant of Irrevocable Proxy Coupled with an Interest: Appointment of
        Proxy

        (a)    Stockholder hereby irrevocably grants to, and appoints, any
               individual who shall be designated by Parent, and each of them,
               Stockholder's proxy and attorney-in-fact (with full power of
               substitution), for and in the name, place and stead of such
               Stockholder, to vote Stockholder's Securities, or grant a consent
               or approval in respect of such Securities, at any meeting of
               stockholders of the Company or at any adjournment thereof or in
               any other circumstances upon which their vote, consent or other
               approval is sought, (i) in favor of the Merger, the adoption by
               the Company of the Merger Agreement and the approval of the other
               transactions contemplated by the Merger Agreement and the calling
               of a special meeting of the stockholders of the Company to
               consider any of the foregoing, and (ii) against any Alternative
               Proposal or Frustrating Transaction.

        (b)    Stockholder represents that any proxies heretofore given in
               respect of Stockholder's Securities are not irrevocable, and that
               any such proxies are hereby revoked.

        (c)    STOCKHOLDER HEREBY AFFIRMS THAT THE PROXY SET FORTH IN THIS
               SECTION 2 IS COUPLED WITH AN INTEREST AND IS IRREVOCABLE UNTIL
               THE TIME SET FORTH IN THE LAST SENTENCE OF THIS SECTION.
               Stockholder hereby further affirms that such irrevocable proxy is
               given in connection with the execution of the Merger Agreement,
               and that such irrevocable proxy is given to secure the
               performance of the duties of Stockholder under this Agreement.
               Stockholder hereby ratifies and confirms all that the individual
               voting such irrevocable proxy may lawfully do or cause to be done
               by virtue hereof. Such irrevocable proxy is executed and intended
               to be irrevocable in accordance with the provisions of Section
               212 of the Delaware General Corporate Law ("DGCL"). Such
               irrevocable proxy shall be valid until the earlier to occur of
               (i) one year from the date hereof or (ii) the termination of this
               Agreement in accordance with its terms.

3.      Representations and Warranties of the Stockholder. Stockholder hereby
        represents and warrants to Parent as follows:


        (a)    Authorization. The Stockholder has the legal capacity to execute,
               deliver and perform this Agreement. This Agreement constitutes a
               valid and binding obligation of the Stockholder enforceable
               against the Stockholder in accordance with its terms. If the
               Stockholder is married and the Securities constitute community
               property under applicable law, this Agreement has been duly
               authorized, executed and delivered by, and constitutes the valid
               and binding agreement of, the Stockholder's spouse enforceable
               against such spouse in accordance with its terms.



<PAGE>   9



        (b)    No Conflict. The execution, delivery and performance by the
               Stockholder of this Agreement and the consummation of the
               transactions contemplated hereby do not and will not (i) result
               in any breach or violation of or be in conflict with or
               constitute a default under any law or agreement or arrangement to
               which the Stockholder is a party or by which the Stockholder is
               bound, (ii) require any filing by the Stockholder with or
               authorization by any governmental entity (other than 13D/G
               amendments) or (iii) require any consent or other action by any
               person under, constitute a default under, or give rise to any
               right of termination, cancellation or acceleration of a loss of
               any benefit to which the Stockholder is entitled under any
               provision of any agreement or other instrument binding on the
               Stockholder.

        (c)    Ownership of Securities. Stockholder's Securities and the
               certificates representing such Securities are now held by
               Stockholder, or by a nominee or custodian for the benefit of
               Stockholder, and the Stockholder has good and marketable title to
               such Securities, free and clear of any (i) liens, proxies, voting
               trusts or agreements, understandings or arrangements and (ii)
               pledges, restrictions, charges or other adverse claims of any
               kind or nature. Stockholder owns of record or beneficially no
               securities of the Company, or any options, warrants or rights
               exercisable for securities of the Company, other than the
               Securities set forth opposite the Stockholder's name on Schedule
               A hereto.*

        (d)    Merger Agreement. Stockholder understands and acknowledges that
               parent and Subsidiary are entering into the Merger Agreement in
               reliance upon the Stockholder's execution and delivery of this
               Agreement.

4.      Further Assurances. Stockholder will, from time to time, execute and
        deliver, or cause to be executed and delivered, such additional or
        further transfers, assignments, endorsements, consents and other
        instruments as Parent may reasonably request for the purpose of
        effectively carrying out the transactions contemplated by this Agreement
        and to vest the power to vote Stockholder's Securities as contemplated
        by Section 2.

5.      Assignment; Binding Effect. Except as set forth herein, neither this
        Agreement nor any of the rights, interests, or obligations hereunder
        shall be assigned by any of the parties hereto (whether by operation of
        law or otherwise) without the prior written consent of the other
        parties. Subject to the preceding sentence, this Agreement shall be
        binding upon, inure to the benefit of, and be enforceable by, the
        parties hereto and their respective successors and assigns.
        Notwithstanding anything contained in this Agreement to the contrary,
        nothing in this Agreement, expressed or implied, is intended to confer
        on any person other than the parties hereto or their respective heirs,
        successors, executors, administrators and assigns any rights, remedies,
        obligations or liabilities under or by reason of this Agreement.

*       See page 1

- ---------------
* See page 1.




<PAGE>   10


6.      Termination. This Agreement, and all rights and obligations of the
        parties hereunder, shall terminate upon the earliest to occur of the
        Effective Time or the termination of the Merger Agreement in accordance
        with its terms. Nothing in this Section 6 shall relieve any party from
        liability for willful breach of this Agreement.

7.      Stop Transfer. The Company agrees with, and covenants to, Parent that
        the Company shall not register the transfer of any certificate
        representing Stockholder's Securities unless such transfer is made in
        accordance with the terms of this Agreement.

8.      General provisions.

        (a)    Expenses. All costs and expenses incurred by Parent in connection
               with this Agreement and the transactions contemplated hereby
               shall be paid by Parent. All costs and expenses incurred by the
               Stockholder in connection with this Agreement and the
               transactions contemplated hereby shall be paid by the Company;
               provided, however, that Parent shall reimburse Stockholder, or
               pay for directly if practicable, any expenses incurred in
               connection with action requested by Parent.

        (b)    Amendments. This Agreement may not be amended except by an
               instrument in writing signed by each of the parties hereto.

        (c)    Notice. All notices and other communications hereunder shall be
               in writing and shall be deemed given upon receipt to the parties
               at the following addresses (or at such other address for a party
               as shall be specified by like notice:)

               (i)    if to a Parent, to:

                             Watson Pharmaceuticals, Inc.
                             311 Bonnie Circle
                             Corona, California 91720
                             Fax: (909) 270-1429
                             Attn: Chairman & CEO

               with a copy to:

                             Watson Pharmaceuticals, Inc.
                             311 Bonnie Circle
                             Corona, California 91720
                             Fax: (909) 270-1429
                             Attn: Legal Department




<PAGE>   11


               ; and

               (ii)   if to Stockholder, to the address set forth under the name
                      of Stockholder on Schedule A attached hereto:

               with a copy to:

                             Kirkland & Ellis
                             153 East 53rd Street
                             New York, New York 10022
                             Fax: (212) 446-4900
                             Attn: Stephen P. H. Johnson

        (d)    Interpretation. When a reference is made to this Agreement to a
               Section, such reference shall be to a Section of this Agreement
               unless otherwise indicated. The headings contained in this
               Agreement are for reference purposes only and shall not affect in
               any way the meaning or interpretation of this Agreement. Wherever
               the words "include", "includes" or "including" are used in this
               Agreement, they shall be deemed to be followed by the words
               "without limitation."

        (e)    Counterparts. This Agreement may be executed in two or more
               counterparts, all for which shall be considered one and the same
               agreement and shall become effective when two or more
               counterparts have been signed by each of the parties and
               delivered to the other parties, it being understood that all
               parties need not sign the same counterpart.

        (f)    Entire Agreement; No Third-party Beneficiaries. This Agreement
               (including the documents and instruments referred to herein) (i)
               constitutes the entire agreement and supersedes all prior
               agreements and understandings, both written and oral, among the
               parties with respect to the subject matter hereof and (ii) is not
               intended to confer upon any person other than the parties hereto
               any rights or remedies hereunder.

        (g)    Governing Law. This Agreement shall be governed and construed in
               accordance with the laws of the State of Delaware without regard
               to any applicable conflicts of law.

9.      Stockholder Capacity. Stockholder signs solely in his capacity as the
        record holder and beneficial owner of, or the trustee of a trust whose
        beneficiaries are the beneficial owners of, Stockholder's Securities and
        nothing herein shall limit or affect any actions taken by Stockholder in
        his capacity as an officer or director, if applicable, of the Company to
        the extent specifically permitted by the Merger Agreement.




<PAGE>   12


10.     Enforcement. The parties agree that irreparable damage would occur in
        the event that any of the provisions of this Agreement were not
        performed in accordance with their specific terms or were otherwise
        breached. It is accordingly agreed that the parties shall be entitled to
        an injunction or injunctions to prevent breaches of this Agreement and
        to enforce specifically the terms and provisions of this Agreement in a
        court of the United States. This being in addition to any other remedy
        to which they are entitled at law or in equity. In addition, each of the
        partys hereto waives any right to trial by jury with respect to any 
        claim or proceeding related to or arising out of this Agreement or any
        of the transactions contemplated hereby.

        STOCKHOLDER AGREES THAT, IN CONNECTION WITH ANY LEGAL SUIT OR PROCEEDING
        ARISING WITH RESPECT TO THIS AGREEMENT, IT SHALL SUBMIT TO THE
        JURISDICTION OF THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF
        DELAWARE AND AGREES TO VENUE IN SUCH COURTS. STOCKHOLDER HEREBY APPOINTS
        THE SECRETARY OF THE COMPANY AS HIS AGENT FOR SERVICE OF PROCESS FOR
        PURPOSES OF THE FOREGOING SENTENCE ONLY. EACH PARTY HERETO WAIVES ANY
        RIGHT TO JURY TRIAL IN CONNECTION WITH ANY SUCH SUIT OR PROCEEDING.

                                    ********








<PAGE>   13



        IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first written above.

                                         WATSON PHARMACEUTICALS, INC.



                                         By: /s/  Robert P. Funsten
                                            --------------------------------

                                         Name: Robert P. Funsten
                                              ------------------------------

                                         Title: V.P., Legal Affairs
                                               -----------------------------


                                         STOCKHOLDER


                                         /s/ Dinesh C. Patel
                                         -----------------------------------
                                         Dinesh C. Patel, Ph.D.




<PAGE>   14



                                   SCHEDULE A


STOCKHOLDER                                                     SECURITIES HELD

Dinesh C. Patel, Ph.D.                                             2,687,926*








* A portion of these shares are pledged to secure borrowings by Dr. Patel. Dr.
Patel has retained voting rights on the pledged shares. In addition, Dr. Patel
holds options to purchase 175,002 shares.




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