ARRIS PHARMACEUTICAL CORP/DE/
10-Q/A, 1996-08-26
PHARMACEUTICAL PREPARATIONS
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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC  20549

                                  FORM 10-Q/A
                                AMENDMENT NO. 2

(Mark One)

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
    EXCHANGE ACT OF 1934

    For the quarterly period ended March 31, 1996

                                       OR

[  ]     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934

    For the transition period from ________ to ________

                         Commission File Number 0-22788

                        ARRIS PHARMACEUTICAL CORPORATION
             (Exact name of registrant as specified in its charter)

              Delaware                                    22-2969941
- --------------------------------------------------------------------------------
  (State or other jurisdiction              (I.R.S. Employer Identification No.)
of incorporation or organization)


                           385 OYSTER POINT BOULEVARD
                     SOUTH SAN FRANCISCO, CALIFORNIA 94080
          (Address of principal executive offices including zip code)


                                 (415) 829-1000
              (Registrant's telephone number, including area code)


    Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.  [X] Yes    [  ] No.

The number of outstanding shares of the registrant's Common Stock, $0.001 par
value, was 13,992,805 as of April 30, 1996.


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                        ARRIS PHARMACEUTICAL CORPORATION

                                     INDEX

                                                                    PAGE NUMBER
                                                                    -----------
PART II. OTHER INFORMATION

Item 6.  Exhibits and Reports on Form 8-K.                               3

SIGNATURES                                                               4


                                       2

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PART II. OTHER INFORMATION

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

         (a)  Exhibits

              Item      Description
              ----      -----------

              10.33*    Amendment to Agreement dated March 29, 1993 between the
                        Registrant and Kabi Pharmacia AB, dated January 31,
                        1996. (1)

              10.34*    First Amendment to Research and License Agreement dated
                        May 28, 1993 between Registrant and Amgen, Inc., dated
                        February 2, 1996.  (1)

              10.35     Research Agreement between the Registrant and Pharmacia
                        & Upjohn, Inc., a Delaware corporation, dated February
                        29, 1996.  (1)(2)

              10.36*    Form of Sixth Amendment to Lease dated October 15, 1992
                        between the Registrant and Shelton Properties, Inc.
                        dated March 27, 1996.

              10.37*    Financing Agreement between Hambrecht and Quist
                        Guaranty Finance, LLC, dated March 29, 1996, including
                        Security Agreement and Warrant Purchase Agreement of
                        even date.

              10.38*    Amendment to Lease Schedule under Master Property Lease
                        Agreement dated March 29, 1994 between Hambrecht and
                        Quist Guaranty Finance, L.P., dated March 29, 1996.

              27*       Financial Data Schedule


* Previously filed

(1) Confidential treatment has been requested for portions to this document.
Brackets indicate portions of text that have been omitted.  A separate filing of
such omitted text has been made with the Commission as part of the Company's
application for confidential treatment.

(2) Appendix A, the Collaboration Agreement between Registrant and Pharmacia AB,
dated March 29, 1993, is incorporated herein by reference to Exhibit 10.15 to
Amendment No. 1 of the Registrant's Registration Statement on Form S-1 filed
October 13, 1993 and Exhibit 10.15(a) to Amendment No. 3 of the Registrant's
Registration Statement on Form S-1 filed November 17, 1993.  Appendix B, the
Research Agreement between Registrant and Pharmacia AB, dated December 21, 1994,
is incorporated herein by reference to Exhibit 10.25 to the Registrant's Annual
Report on Form 10-K for the fiscal year ended December 31, 1994.

         (b)  Reports on Form 8-K

              A Current Report on Form 8-K was filed on January 5, 1996, as
         amended on February 5, 1996 to include financial statements and pro
         forma financial information, in conjunction with the Company's
         acquisition of Khepri Pharmaceuticals, Inc., which was completed on
         December 22, 1995.


                                       3

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                        ARRIS PHARMACEUTICAL CORPORATION

                                   SIGNATURES

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



                                  ARRIS PHARMACEUTICAL CORPORATION



Date:  August 23, 1996            By: /s/ John P. Walker
                                      --------------------------------------
                                      John P. Walker
                                      President, Chief Executive Officer
                                      and Director

Date:  August 23, 1996            By: /s/ Daniel H. Petree
                                      --------------------------------------
                                      Daniel H. Petree
                                      Executive Vice President, Corporate 
                                      Development, and Chief Financial Officer


                                       4

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                       ARRIS PHARMACEUTICAL CORPORATION

                               INDEX OF EXHIBITS



              10.33*    Amendment to Agreement dated March 29, 1993 between the
                        Registrant and Kabi Pharmacia AB, dated January 31,
                        1996. (1)

              10.34*    First Amendment to Research and License Agreement dated
                        May 28, 1993 between Registrant and Amgen, Inc., dated
                        February 2, 1996.  (1)

              10.35     Research Agreement between the Registrant and Pharmacia
                        & Upjohn, Inc., a Delaware corporation, dated February
                        29, 1996.  (1)(2)

              10.36*    Form of Sixth Amendment to Lease dated October 15, 1992
                        between the Registrant and Shelton Properties, Inc.
                        dated March 27, 1996.

              10.37*    Financing Agreement between Hambrecht and Quist
                        Guaranty Finance, LLC, dated March 29, 1996, including
                        Security Agreement and Warrant Purchase Agreement of
                        even date.

              10.38*    Amendment to Lease Schedule under Master Property Lease
                        Agreement dated March 29, 1994 between Hambrecht and
                        Quist Guaranty Finance, L.P., dated March 29, 1996.

              27*       Financial Data Schedule


* Previously filed

(1) Confidential treatment has been requested for portions to this document.
Brackets indicate portions of text that have been omitted.  A separate filing of
such omitted text has been made with the Commission as part of the Company's
application for confidential treatment.

(2) Appendix A, the Collaboration Agreement between Registrant and Pharmacia AB,
dated March 29, 1993, is incorporated herein by reference to Exhibit 10.15 to
Amendment No. 1 of the Registrant's Registration Statement on Form S-1 filed
October 13, 1993 and Exhibit 10.15(a) to Amendment No. 3 of the Registrant's
Registration Statement on Form S-1 filed November 17, 1993.  Appendix B, the
Research Agreement between Registrant and Pharmacia AB, dated December 21, 1994,
is incorporated herein by reference to Exhibit 10.25 to the Registrant's Annual
Report on Form 10-K for the fiscal year ended December 31, 1994.


                                       5


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                                    EXHIBIT 10.35

Arris/P&U Research Agreement

                                  RESEARCH AGREEMENT


This Research Agreement (the "Agreement") is made and entered into as of this
29th day of February, 1996 (hereinafter, "Effective Date") by and between
Pharmacia & Upjohn, Inc. a Delaware Corporation having a place of business at
7000 Portage Road, Portage, Michigan 49001, (hereinafter, "P&U") and Arris
Pharmaceutical Corporation, 385 Oyster Point Boulevard, Suite 3, South San
Francisco, CA 94080, a Delaware corporation (hereinafter, "Arris").


WHEREAS, Arris and Kabi Pharmacia AB previously entered into a Collaboration 
Agreement dated March 29, 1993 (hereinafter, "Collaboration Agreement" 
attached as Appendix "A"), pursuant to which they are conducting a research 
collaboration seeking to identify one or more orally active mimics of or 
antagonists to human growth hormone and [***] and a Collaborative Research and 
License Agreement dated August 29, 1995, (hereinafter, "Collaborative 
Agreement") directed toward discovering compositions having anti-coagulation 
activity targeting enzyme factor Xa, enzyme factor VIIa or the enzyme 
Thrombin.


WHEREAS, Arris and Pharmacia AB previously entered into a Research Agreement
dated December 21, 1994 (hereinafter, "Research Agreement" attached as Appendix
"B"), pursuant to which the parties are conducting a research collaboration to
utilize combinatorial chemistry and high throughput screening (EMS) to
facilitate Pharmacia's drug discovery efforts.


WHEREAS, P&U is the merged company formed by the merger of Pharmacia AB and The
Upjohn Company, and P&U desires to continue the Research Agreement for the
collaboration with Arris to utilize combinatorial chemistry for P&U drug
discovery efforts.


NOW THEREFORE, in consideration of the mutual covenants and promises contained
herein, the parties do hereby agree as follows:


DEFINITIONS 
Unless otherwise provided herein, all definitions will be as provided in the
Collaboration Agreement.

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Arris/P&U Research Agreement

"Library" means those compounds prepared by Arris under this Agreement which
includes the set of 250,000 suitably dissimilar nonpeptide compounds using
combinatorial chemistry techniques (also hereinafter referred to as the
"Diversity Set") and the 90,000 compounds supplied by Arris under the Research
Agreement ( also hereinafter referred to as the "Research Agreement Set").


1. DUTIES 

1.1 Arris agrees to develop and provide P&U with the following:

    (a) Scientific tools, know-how and expertise for establishing 
        combinatorial chemistry library synthesis capability at P&U's 
        facilities worldwide including those in the U.S.A., Italy and Sweden 
        using compatible, if not identical, hardware and software.

    (b) A set of 250,000 suitably dissimilar nonpeptide compounds prepared by 
        Arris using combinatorial chemistry techniques (hereinafter, 
        "Diversity Set"). The Diversity Set will be prepared and delivered to 
        P&U on an ongoing basis in a format specified by P&U and acceptable 
        to Arris at a rate of approximately [***] compounds during the first 
        year, [***] compounds during the second year and [***] compounds 
        during the third year of the term of this Agreement. The Diversity 
        Set will not contain compounds purchased by Arris from third parties, 
        will be compounds of known structure with accompanying synthesis 
        protocols and structures in computer readable form, will be 
        distributed one compound per screening plate well and will be 
        supplied in a minimum amount of 5 mg to about 10 mg of the compound 
        in the dry state.

    (c) Of the 90,000 compounds to be provided by Arris in the Research 
        Agreement Set those compounds not yet provided by Arris under the 
        Research Agreement hereinafter, "Research Agreement Residual Set"), 
        will be identified as such and will be supplied according to the 
        schedule in the Research Agreement and as further specified by P&U.

    (d) P&U will have access to any Arris Artificial Intelligence, 
        computational chemistry or other computer technology specifically 
        designed for lead generation, molecular docking, DE NOVO design, 
        scaffold selection, library design or chemical diversity developed by 
        Arris 

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Arris/P&U Research Agreement

        prior to and during the term of this Agreement ("Combichem AI"). Arris
        will provide to P&U the code and executables for that software 
        including that for molecular docking and DE NOVO molecular design. 
        P&U may from time to time participate with Arris in the joint design 
        of new software. New software so jointly designed will be jointly 
        owned by the parties. P&U will share with Arris software developments 
        including code and executables derived from Combichem AI under this 
        Agreement.

    (e) For the term of this Agreement, Arris will provide to P&U scientific 
        tools and know-how for high throughput screening (HTS) as previously 
        provided under the Research Agreement.

    (f) [***]

1.2 (a) In carrying out its duties under this Agreement, Arris will annually 
        devote the efforts of at least [***] FTE's (Full Time Equivalents) of 
        its fully trained staff to fulfilling its obligations under this 
        Agreement. These efforts are in addition to those being carried out 
        and already paid for under the Research Agreement.

    (b) Arris will provide to the Research Committee a time report and a 
        financial accounting on at least a quarterly basis of the FTE's that 
        are committed under this Agreement and a progress report on at least 
        a quarterly basis as to the completion of their obligations

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Arris/P&U Research Agreement

        under this Agreement.


1.3  The set of compounds provided under the Collaboration Agreement, The
     Diversity Set and the Research Agreement Set will be mutually exclusive
     sets, i.e. no compound in one set will be included in either of the other
     sets. The terms of this Agreement will apply to any compound provided
     under this Agreement and the Research Agreement.

1.4  If desired by P&U and acceptable to Arris, [***] at a cost to be 
     determined and agreed upon by the parties in a separate agreement.

2.   RESEARCH COMMITTEE

2.1  For the term of this Agreement and [***] thereafter, the parties agree to
     form a Research Committee consisting of two representatives from Arris and
     up to six representatives from P&U, one of the P&U representatives being
     the chair of the Research Committee, to facilitate the research, 
     collaboration and information exchange contemplated by this Agreement.

2.2  During the term of this Agreement, the Research Committee shall meet
     regularly either in person or by tele-conference or video-conference but
     at least once every four (4) months. All decisions by the Research
     Committee will be made at any of its scheduled meetings and require
     agreement by the senior representative of each party present at the
     meeting.

2.3  The Research Committee shall be the primary vehicle for formal interaction
     between the parties with respect to coordinating the P 1 HE'S obligated
     under this Agreement and the research and disclosure of information as
     well as transfer of compounds under this Agreement. Without limiting the
     foregoing, the Research Committee will be responsible for (a) the timing
     and manner of research, disclosure of information, technical exchanges,
     transfer of compounds, scientific visits at Arris facilities; (b)
     recommending what patent applications should be filed under this Agreement
     and reviewing such patent application filings; (c) monitoring the progress
     of research and other activities under this Agreement; (d) monitoring and
     making

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Arris/P&U Research Agreement

     decisions under Articles 6.2 and 6.3; (e) the chemical design and
     monitoring the delivery of the Diversity Set and the Research Agreement
     Residual Set; (f) determining the quality standards, suitability and
     acceptability of the purity, diversity and dissimilarity of the compounds 
     provided under Articles l.l(b) and (c), above; (g) determining the 
     frequency, time and place of Research Committee meetings.

3.   EXCHANGE OF CONFIDENTIAL INFORMATION

3.1  All information generated and relating to the compounds in the Diversity
     Set and the Research Agreement Set as well as this Agreement is
     confidential information and will not be communicated by P&U or Arris to
     any third parties during the term of this Agreement and for [***] 
     thereafter without the express written consent of the nondisclosing party, 
     such consent to not be unreasonably withheld. Confidential information 
     will not include information which:

     (a) is already known to the receiving party as evidenced by their own
         written records;

     (b) is disclosed to the receiving party by a third party who has the right
         to make such disclosure;

     (c) is or becomes part of the public domain through no fault of the
         receiving party;

     (d) is required to be disclosed to a government agency anywhere in the 
         world for legitimate commercial or legal purposes, relating TO, INTER 
         ALIA, drug registration, marketing, and patent applications; provided 
         the party required to make any such disclosure first notifies the 
         other party, allowing for comment prior to disclosure, and makes a 
         reasonable effort to maintain the confidentiality of such agreement; 
         or

     (e) is disclosed to a collaborator or consultant or collaborator as 
         permitted under Articles 6.2 and 6.3 of the receiving party for 
         purposes of carrying out the obligations of this Agreement under a 
         duty of confidentiality to the disclosing party.

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Arris/P&U Research Agreement

3.2  Software which is jointly designed under this Agreement will be
     confidential, and its disclosure will be according to the confidentiality
     provisions of 3.1, above. Software which is the sole property of either
     party will not be disclosed by the receiving party for a period of [***] 
     after the termination of this Agreement.

4.   INVENTIONS AND PATENTS
4.1  Each party is responsible for filing and prosecuting its own patent
     applications and maintaining patents issued from such applications for its
     inventions under this Agreement as hereinafter provided. In accordance
     with applicable laws of inventorship, each party shall cooperate with the
     other to obtain such patent rights. [***] will retain title to
     inventions, patents, and other intellectual property rights and know-how
     which result from its research and development performed under this
     Agreement.

4.2  After consultation with the Research Committee, each party responsible for
     filing a patent application shall determine its patent filing strategy,
     and the other party will cooperate to the extent necessary to prepare all
     papers and documentation in the event of jointly invented inventions made
     under this Agreement. All costs for such filing, prosecuting, and
     maintaining of joint-inventorship patents shall be borne by [***].

4.3  As regards to patentable inventions independently owned by Arris which
     cover the Library, [***]. In the event Arris decides to abandon any such 
     patent [***]. This paragraph will apply MUTATIS MUTANDIS for patentable 
     inventions independently owned by P&U which are licensed to Arris under 
     Article 6 of this Agreement.

4.4  Each party shall promptly advise the other upon becoming aware of any
     third party infringement of a patent filed under this Agreement. Each
     party shall [***] as follows:
     (a) [***]


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Arris/P&U Research Agreement

         [***]

     (b) If one party holds exclusive rights to a compound which is the 
         subject of an infringement, that party [***]. In such event, the other
         party shall cooperate fully with [***]. If [***] makes a preliminary 
         determination not to commence a suit, it shall consult with the other
         party on a timely basis regarding such preliminary decision, and shall
         consider any arguments made by such other party in favor of commencing
         litigation, but the decision whether to institute suit shall remain 
         with the party holding the exclusive rights.

     (c) If the subject of an infringement is not a compound as to which 
         either party holds exclusive rights, then the parties shall first 
         consult regarding their preferred course of action, as provided in 
         paragraph (a), above, and in the absence of agreement to institute 
         suit jointly, each party shall make its own determination as to what 
         action is in its best interests for the enforcement of its own 
         intellectual property rights.

     (d) Neither party shall enter into any settlement or compromise which 
         would in any manner alter, diminish or be in derogation of the other 
         party's rights under this Agreement without the prior written 
         consent of such other party.

4.5  If any third party brings suits against either party asserting any patent
     infringement related to compound(s) discovered, generated or developed
     under this Agreement, [***].

5.   PAYMENT
5.1  As partial compensation for services rendered and for the licenses and
     grants under Article 6

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Arris/P&U Research Agreement

     of this Agreement, P&U agrees to pay Arris as follows:

     (a) [***] within thirty (30) days of the Effective Date of this Agreement;

     (b) [***] by or upon the one (1) year anniversary of the Effective Date of
     this Agreement; and

     (c) [***] by or upon the second (2) year anniversary of the Effective Date
     of this Agreement.

5.2 In addition to the payments under 5.1, above, P&U agrees to pay Arris as
full compensation for the delivery of compounds in the Diversity Set and for the
licenses and grants under Article 6 the following payments. At the end of each
calendar quarter, Arris shall send P&U an invoice for the number of compounds in
the Diversity Set which have been delivered to P&U in such quarter, multiplied
by [***] per compound. In addition, after Arris has delivered the 250,000
compounds to P&U, it shall be due a one-time supplemental fee of [***]. Such
invoices shall be paid by P&U within thirty (30) days after receipt. The
aggregate payments to be made by P&U under this Article 5.2, assuming delivery
by Arris of the full 250,000 compounds in the Diversity Set, shall be [***]
(consisting of [***] per compound delivered plus the one-time supplemental fee
of [***]).

6. OWNERSHIP, GRANTS AND LICENSES 
6.1 (a)  Subject to l.l(d), regarding [***] each party will [***] during the 
         term of this Agreement.  The compounds and their chemical structures 
         contained within the Library shall be [***] for the term of this 
         Agreement and thereafter, subject to the rights exercised under 
         Articles 6.2 and 6.3.

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Arris/P&U Research Agreement

     (b) Arris hereby grants to P&U and its Affiliates a nonexclusive, 
         irrevocable, royalty-free worldwide license under patents and 
         know-how owned or controlled by Arris and developed prior to or 
         during the term of this Agreements with no right to sublicense, for 
         [***].

     (c) P&U hereby grants to Arris and its Affiliates a nonexclusive, 
         irrevocable, royalty-free worldwide license for [***] during the term 
         of this Agreement, for [***] with no right to sublicense.

6.2  (a) For the term of this Agreement, P&U and its Affiliates agree to 
         [***] subject to the terms and conditions of parts (b), (c) 
         and (d) below.

     (b) For the term of this Agreement and [***] thereafter, P & U and 
         its Affiliates have the option to [***] by performing the following 
         steps:
           1) notifying the Research Committee [***],
           2) notifying the Research Committee [***]; and
           3) obtaining the consent of the Research Committee [***]. The 
              purpose of such review shall be to

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Arris/P&U Research Agreement

         [***] The Research Committee shall also have the authority to consent
         to
         [***] based upon a reasonable demonstration of [***].

     (c) Arris agrees to grant P&U and its Affiliates a non-exclusive, 
         royalty-free, irrevocable worldwide license [***], above. [***]; 
         except as provided under part (d), below.

     (d) [***]

 6.3 (a) Arris agrees to [***]. Over and above said [***], Arris must disclose 
         to P&U in sufficient detail [***]. Arris does not have the right [***]
         during the term of this Agreement and for [***] thereafter.

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Arris/P&U Research Agreement

     (b) For the term of this Agreement and [***] thereafter Arris and its 
         Affiliates have the option to [***] by performing the following steps:

            1) notifying the Research Committee of [***],

            2) notifying the Research Committee that [***]; and

            3) obtaining the consent of the Research Committee to [***]. The 
         purpose of such review shall be to [***]. The Research Committee shall
         also have the authority to consent to [***].

     (c) P&U agrees to grant Arris and its Affiliates a non-exclusive, royalty-
         free, worldwide license [***] above. [***] except as provided under 
         part (d), below.

     (d) [***]

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Arris/P&U Research Agreement

         [***]

6.4  Under either part 6.2(b) or 6.3(b), above, any [***] will be identified in
     writing to the other party and Research Committee and shall represent a 
     commitment to develop or have developed [***] although no such 
     notification shall obligate either party [***], and failure to do so [***]
     or other proofs satisfactory to the Research Committee will cause [***]. 
     [***], respectively. In the event [***]. If both parties [***].

6.5  For purposes of part 6.2(c) or 6.3(c), Arris patent or know-how or P&U
     patent or know-how, respectively shall mean a patent or know-how owned or
     controlled by that party or patents or know-how licensed to that party,
     and not held jointly with each other; and the term "Affiliates" shall have
     the same meaning as defined in the Collaboration Agreement.

6.6  After the term of this Agreement and the [***] thereafter, the [***]. The 
     licenses set forth in Article 6.1(b) and any exclusive rights which have
     been obtained by either party under 62 or 6.3 shall continue for the 
     periods indicated therein, but otherwise all licenses in this Agreement 
     shall terminate.

6.7  In the event a third party patent(s) issues or is discovered in the
     U.S.A., Europe or Japan which through no fault of either party prevents
     the use of the Arris Combichem AI or the use, manufacture or sale of
     [***], such that

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     the essential purposes of P&U in entering into this Agreement are 
     compromised, then the parties shall discuss and renegotiate the terms 
     and financial obligations of this Agreement to take into consideration 
     this situation. If agreement cannot be reached or if no license can be 
     obtained from such third party, through no fault of either party to this 
     Agreement, (neither party being obligated to institute litigation 
     against any such third party), then P&U will have the right to terminate 
     this Agreement without any further obligations or duties to Arris; 
     except the duty of confidentiality under Article 3 and to the extent 
     available a right of access to the Library under Article 6.

7.   TERM AND TERMINATION

7.1  This Agreement shall be effective as of the date first written above and
     shall remain in effect for three (3) years. This Agreement may be extended
     upon written agreement by the parties. References in this Agreement to the
     period [***] after termination means the period immediately following 
     termination or conclusion of any extension period.

7.2  Notwithstanding the provisions of Article 7.1 above, either party may
     terminate this Agreement upon the bankruptcy or insolvency of the other or
     an admission by the other of its inability to pay debts as they become
     due.

7.3  P&U has the right to terminate this Agreement under Article 6.7, above.

7.4  This agreement may be terminated by either party for breach or default by
     the other party, or for substantial failure by the other party to perform
     its duties under this Agreement. If either party is in breach or default
     of any of the provisions of this Agreement, or has substantially failed to
     perform its duties under this Agreement, and does not rectify such breach
     or default or failure within [***] from written notice thereof, the other 
     party can terminate this Agreement by notice.

7.5  Termination of this Agreement for any reason by either party shall not
     relieve the parties of any obligation accruing prior to termination, such
     as confidentiality and other provisions which

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     by their nature would survive such termination. Any termination of this 
     Agreement by either party under this Article 7 shall not constitute an 
     election of remedies by it, and it shall in addition, have all other 
     remedies provided by law.

7.6  The right of either party to terminate this Agreement as hereinabove
     provided shall not be affected in any way by its waiver of or failure to
     take action with respect to any previous default. Any such termination
     shall be without prejudice to any further rights and remedies vested in
     the parties. The license rights granted herein shall survive the
     bankruptcy or reorganization of either party.

8.   GENERAL PROVISIONS

8.1  This Agreement controls, modifies and supersedes the Research Agreement to
     the extent any provisions between them are inconsistent or redundant. This
     Agreement, except as otherwise provided herein, constitutes the entire
     understanding between the parties with reference to the subject matter
     hereof, and no waiver, modification, or amendment of this Agreement shall
     be valid or effective unless made in writing and signed by a duly
     authorized officer of each party. Should the Collaboration Agreement be
     terminated or expire, the references herein to provisions in the
     Collaboration Agreement shall remain valid and effective for the purpose
     of this Agreement. This Agreement is otherwise separate and independent
     from the Collaboration Agreement and the Collaborative Agreement.

8.2  Neither this Agreement nor any interest hereunder shall be assignable by
     either party without the other party's written consent; provided, however,
     that a party may assign this agreement to any wholly owned subsidiary or
     to any successor by merger or sale or the like of substantially all of its
     assets to which this Agreement relates in a manner such that the assignor
     shall remain liable and responsible for the performance and observance of
     all its duties and obligations hereunder.

8.3  The parties expressly agree and contract that it is not the intention of
     either party to violate any public policy, statutory or common laws,
     rules, regulation, treaties or decisions of any government or agency
     thereof of any country. If any word, sentence, paragraph, clause or


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     combination thereof of this Agreement is judicially or administratively 
     interpreted or construed as being in violation of any such provisions in 
     any country, such words, sentences, paragraphs, clauses or combinations 
     thereof shall be inoperative in each such country and the remainder of 
     this Agreement shall remain binding upon the parties to this Agreement.

8.4  All notices Squired or authorized to be given under this Agreement shall
     be in writing and shall be sent by registered or certified mail,
     facsimile, courier, telex or the like to the following addresses for the
     respective parties. Such notice shall be effective as of its date of
     mailing or transmission.


         President
         Arris Pharmaceutical Corporation
         385 Oyster Point Boulevard, Suite 3
         South San Francisco, CA 94080
         FAX: 415-737-8590


         and


         V.P. of Business Development
         Pharmacia & Upjohn, Inc.
         7000 Portage Road
         Portage, Michigan 49001
         FAX 616-323-6247

     with a copy to
         Exec. V P. Worldwide Science and Technology
         Pharmacia & Upjohn, Inc.
         Knyvett House, The Causeway
         Staines
         Middlesex TW18 3BA
         United Kingdom


                                          15

<PAGE>

8.5  Force Majeure Neither of the undersigned parties shall be liable for 
     failure to perform its obligations under this Agreement (other than the 
     payment of monies due) when occasioned by contingencies beyond its 
     control, such as strikes or other work stoppages, lock-outs, riots, wars 
     and acts of God, such as fire, floods, storms, and earthquakes. Each 
     party will notify the other immediately should any such contingency 
     occur and any time for performance hereunder shall be extended by the 
     actual time of delay caused by such occurrence.

8.6  (a) No right, expressed or implied, is granted to Arris to use in any 
         manner the name "Pharmacia AB", "The Upjohn Company" or "Pharmacia & 
         Upjohn, Inc." or any form thereof or any other trademark or trade 
         name of P&U or its Affiliates in connection with the performance of 
         this Agreement. No right, expressed or implied, is granted to P&U to 
         use in any manner the name "Arris" or any form thereof or any other 
         trademark or trade name of Arris or its Affiliates in connection 
         with the performance of this Agreement.

     (b) Neither party will issue any press release, SEC filings, prospectus 
         or any other public announcement relating to this Agreement or its 
         terms without obtaining the other party's prior written approval 
         which approval will not be unreasonably withheld. The term "press 
         release", as used herein, includes follow-up correspondence, press 
         kits, and the like which may be provided in response to inquiries 
         from the media or others.

8.7  All titles and captions in this Agreement are for convenience only and
     shall not be of any meaning or substance.

8.8  This Agreement may be executed in any number of counterparts, each of
     which shall be deemed an original, but all of which together shall
     constitute one and the same instrument.

8.9  Each party reserves the right to fulfill its obligations and exercise its
     rights under this Agreement through the actions of any of its Affiliates.

8.10 Arris and P&U shall each have the status of an independent contractor
     without the power to


                                          16

<PAGE>

Arris/P&U Research Agreement

     act as an agent or otherwise bind the other party or its employees.


8.11 This Agreement shall be construed in accordance with and governed by the
     laws of the State of Michigan excluding the conflict of laws provisions.


IN WITNESS HEREOF, the parties intending to be bound hereby have caused this
Agreement to be signed by their duly authorized representatives as of the day
and year first above written.



ACCEPTED AND AGREED TO



ARRIS PHARMACEUTICAL CORP.             PHARMACIA & UPJOHN, INCORPORATED


/s/Daniel H. Petree                     /s/ Ley S. Smith
- --------------------------             -----------------------------
Name: Daniel H. Petree                 Name: Ley S. Smith
Title: V.P., C.F.O.                    Title: Executive VP & President PPC U.S.


                                          17

<PAGE>

Arris/P&U Research Agreement

APPENDIX A

COLLABORATION AGREEMENT DATED MARCH 29, 1993*


______________
* Appendix A, the Collaboration Agreement between Registrant and Pharmacia 
  AB, dated March 29, 1993, is incorporated herein by reference to Exhibit 10.15
  to Amendment No. 1 of the Registrant's Registration Statement on Form S-1
  filed October 13, 1993 and Exhibit 10.15(a) to Amendment No. 3 of the
  Registrant's Registration Statement on Form S-1 filed November 17, 1993.

<PAGE>

Arris/P&U Research Agreement

APPENDIX B

RESEARCH AGREEMENT, DATED DECEMBER 21, 1994*


______________
* Appendix B, the Research Agreement between Registrant and Pharmacia 
  AB, dated December 21, 1994, is incorporated herein by reference to Exhibit
  10.25 to the Registrant's Annual Report on Form 10-K for the fiscal year ended
  December 31, 1994.


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