SEQUUS PHARMACEUTICALS INC
8-K, 1998-12-17
PHARMACEUTICAL PREPARATIONS
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION

                            WASHINGTON, D. C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

     PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

       Date of Report (Date of earliest event reported): January 1, 1995

                          SEQUUS PHARMACEUTICALS, INC.
             (Exact name of registrant as specified in its charter)

            DELAWARE                     0-15847                  94-3031834
  (State or other jurisdiction    (Commission File No.)         (IRS Employer
        of incorporation)                                   Identification No.)

                               960 Hamilton Court
                              Menlo Park, CA 94025
                    (Address of principal executive offices
                                 and zip code)

                    Registrant's telephone number, including
                           area code: (650) 323-9011

                 (former address, if changed since last report)

<PAGE>
 
                             ITEM 5. OTHER EVENTS.

On January 1, 1995, SEQUUS Pharmaceuticals, Inc., a Delaware corporation
("SEQUUS"), entered into a Master Research Services and License Agreement (the
"Agreement") with Yissum Research Development Company of the Hebrew University
("Yissum").  Pursuant to this Agreement, Yissum has granted SEQUUS an exlusive
license to patents relating to the technology used in SEQUUS' DOXIL product and
Yissum will perform a specified research program relating to SEQUUS' DOXIL
product and STEALTH technology.  SEQUUS and Yissum Research Development Company
of the Hebrew University amended the agreement on May 2, 1995, September 11,
1996 and June 1, 1998.

A copy of the Agreement and the amendments thereto are attached hereto as
Exhibits 10.29, 10.30, 10.31 and 10.32 and are incorporated herein by reference.
<PAGE>
 
ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.

          (c)  Exhibits


Exhibit No.  Description
- -------------------------

10.29* Master Research Services and License Agreement dated as of January 1,
       1995, by and among SEQUUS Pharmaceuticals, Inc. and Yissum Research
       Development Company of the Hebrew University and exhibits thereto.

10.30* Amendment I: Specified License Agreement dated as of May 2, 1995, by and
       among SEQUUS Pharmaceuticals, Inc. and Yissum Research Development
       Company of the Hebrew University.

10.31* Amendment II:  Specified Research Agreement dated as of September 11,
       1996, by and among SEQUUS Pharmaceuticals, Inc. and Yissum Research
       Development Company of the Hebrew University.


10.32* Amendment to Agreement dated as of June 1, 1998, by and among SEQUUS
       Pharmaceuticals, Inc. and Yissum Research Development Company  of the
       Hebrew University.

 *   Confidential treatment requested.
<PAGE>
 
                                   SIGNATURES

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

                          SEQUUS PHARMACEUTICALS, INC.

Dated: December 17, 1998           By:  /s/ John Richard
                                   ---  ----------------

                                   Name:  John Richard
                                   Title:   Executive Vice President of Business
                                   Development
<PAGE>
 
                                 EXHIBIT INDEX

                                                          SEQUENTIALLY
EXHIBIT                                                     NUMBERED
NO.                   DESCRIPTION                             PAGE
                      -----------                             ----

10.29*   Master Research Services and License Agreement
         dated as of January 1, 1995, by and among
         SEQUUS Pharmaceuticals, Inc. and
         Yissum Research Development Company
         of the Hebrew University and exhibits thereto.

10.30*   Amendment I:  Specified License Agreement dated 
         as of May 2, 1995, by and among SEQUUS
         Pharmaceuticals, Inc. and Yissum Research 
         Development Company of the Hebrew University.

10.31*   Amendment II: Specified Research Agreement dated 
         as of September 11, 1996 by and among SEQUUS  
         Pharmaceuticals, Inc. and Yissum Research 
         Development Company of the Hebrew University.

10.32*   Amendment to Agreement dated as of June 1, 1998,
         by and among SEQUUS Pharmaceuticals, Inc. and
         Yissum Research Development Company  of the
         Hebrew University.

 *   Confidential treatment requested.

<PAGE>
 
                                                                   EXHIBIT 10.29

[*]= Certain confidential information contained in this document, marked by
     brackets, has been omitted and filed separately with the Securities and
     Exchange Commission pursuant to Rule 24b-2 of the Securities Exchange Act
     of 1934, as amended.

                MASTER RESEARCH SERVICES AND LICENSE AGREEMENT
                ----------------------------------------------

This Master Research Services and License Agreement ("Agreement") is made this
1st day of January 1995 ("Effective Date") by and between YISSUM RESEARCH
DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM of 46 Jabotinsky
Street, Jerusalem (hereinafter referred to as "Yissum") and LIPOSOME TECHNOLOGY,
INC., A Delaware Corporation, of 960 Hamilton Court, Menlo Park, California
94025 (hereinafter referred to as "LTI").

WHEREAS   Yissum is willing to perform the Research as set out in the Research
          Program for LTI for good and valuable consideration, as hereinafter
          defined;

AND
WHEREAS   LTI has previously retained Yissum to perform research services and
          clinical trials for good and valuable consideration under a number of
          agreements which are enumerated in Exhibit A (the "Exhibit
          Agreements") attached hereto and included herein by reference;

AND
WHEREAS   Certain provisions of the Exhibit A Agreements are potentially
          conflicting and therefore represent a possible undesirable source of
          controversy between Yissum and LTI in the future;

AND
WHEREAS   LTI and Yissum wish to clarify their mutual understanding with respect
          to definitions and rights and obligations of the parties under the
          Exhibit A Agreements;

AND
WHEREAS   LTI and Yissum agree that terms and conditions of this Master Research
          Services and License Agreement shall provide a complete and exclusive
          statement of all rights and obligations of the parties one to the
          other and shall supersede any and all prior and/or contemporaneous
          agreement, correspondence, discussions, representations,
          understandings or agreements, including the terms of the Exhibit A
          Agreements, whether written or oral, with respect to the subject
          matter of the Exhibit A Agreements and this Agreement;

AND

[*]= CONFIDENTIAL TREATMENT REQUESTED

                                       1.
<PAGE>
 
WHEREAS   As of the date of the Effective Date of this Master Research Services
          and License Agreement, the Exhibit A Agreements are terminated as
          further set forth in this Agreement hereunder;

NOW, THEREFORE, LTI AND YISSUM AGREE AS FOLLOWS:

                            ARTICLE I.  DEFINITIONS
                            -----------------------

1.1  Master Agreement.  The term "Master Agreement" shall mean this Master
     ----------------                                                     
     Research Services and License Agreement which incorporates the current
     Research Program. This Master Agreement contains terms intended to be
     incorporated into Specific License Agreements and/or Specific Research
     Agreements which the parties may concurrently and/or subsequently enter
     into.

1.2  Yissum Personnel.  The term "Yissum Personnel" shall mean any person or
     ----------------                                                       
     employee in an agency or private contracting relationship with Yissum
     including without limitation [*], who is identified as the Principal
     Investigator in performance of the research services.

1.3  LTI Liaison.  The term "LTI Liaison" shall refer to persons designated by
     -----------                                                              
     LTI and identified in Specific Research Agreements.

1.4  Deliverables.  The term "Deliverables" shall mean the data, reports and the
     ------------                                                               
     like, which are not Inventions and are not patentable, developed and
     produced during performance of the Research Program to be provided by
     Yissum to LTI at such times as are specified in the Specific Research
     Agreement (as hereinafter defined).

1.5  Research Program.  The term "Research Program" shall mean the statements of
     ----------------                                                           
     purpose, objectives, approach, tasks, Deliverables, and time frame for
     transmittal of Deliverables to LTI and for completion of the services
     contemplated hereunder which have been developed by the parties and
     incorporated into Specific Research Agreements.  Realizing that the
     Research Program may be amended from time to time to more fully achieve the
     objectives contemplated hereunder as set out in the Agreement, the
     "Research Program" shall refer to the then current authorized Research
     Program.  The current Research Program is described in Exhibit B.

1.6  The Exhibit "A" Agreements shall mean all agreements signed between the
     --------------------------                                             
     parties until the Effective date of this Agreement, as described in Exhibit
     A.

1.7  LTI Proprietary Technology.  The term "LTI Proprietary Technology" shall
     --------------------------                                              
     mean and include any and all information, know-how, trade secrets,
     formulations, liposome compositions, methods, inventions, patents and
     patent applications, copyrightable subject matter, including without
     limitation technical specifications respecting process and products,
     reports, documents, drawings, oral communications, and samples and test
     materials owned or controlled solely by LTI and provided by LTI to Yissum
     Personnel during the course of this Agreement.  It is agreed that Yissum
     shall use LTI Proprietary

[*]= CONFIDENTIAL TREATMENT REQUESTED

                                       2.
<PAGE>
 
     Technology solely for purposes contemplated by this Agreement.  LTI
     Proprietary Technology shall not include information which is in the public
     domain.

1.8  Invention.  The term "Invention" shall mean any discovery conceived and
     ---------                                                              
     reduced to  practice during performance of the Research Program.  An
     Invention may be made by Yissum Personnel, by LTI Personnel, or jointly by
     the parties and ownership shall be assigned in accordance with Article 3.3.

1.9  License Patent.  The term "License Patent" shall mean all patents issuing
     --------------                                                           
     from patent applications, continuation-in part or divisional applications,
     claiming an Invention conceived and reduced to practice during performance
     of a Research Program, in which at least one inventor is obligated to
     assign his rights to Yissum.

1.10 Confidential Information.  The term "Confidential Information" shall
     ------------------------                                            
     include both "LTI Confidential Information" and "Yissum Confidential
     Information."

     (a)  LTI Confidential Information shall include all oral or written
          information pertaining to LTI Proprietary Technology that is disclosed
          by LTI to Yissum, excluding the following:

          (i)    information known to Yissum prior to receipt from LTI as
                 evidenced by Yissum's written records;

          (ii)   information disclosed to Yissum by a third party not under an
                 obligation of confidentiality to LTI;

          (iii)  information that is, or which becomes, publicly known;

          (iv)   information that is approved for disclosure by the prior
                 written consent of LTI; and

          (v)    information that is identified in writing by LTI as non-
                 confidential.

     (b)  Yissum Confidential Information shall include all oral or written
          information pertaining to Yissum Proprietary Technology that is
          disclosed by Yissum to LTI, excluding the following:

          (i)    information known to LTI prior to receipt from Yissum as
                 evidenced by Yissum's written records;

          (ii)   information disclosed to LTI by a third party not under an
                 obligation of confidentiality to Yissum;

          (iii)  information that is, or which becomes, publicly known;

          (iv)   information that is approved for disclosure by the prior
                 written consent of Yissum; and

[*]= CONFIDENTIAL TREATMENT REQUESTED

                                       3.
<PAGE>
 
          (v)    information that is identified in writing by Yissum as non-
                 confidential.

1.11 Budget and Payment Schedule.  "Budget and Payment Schedule" shall mean
     ---------------------------                                           
     Yissum's research budget and a schedule of LTI's payment obligations to
     Yissum.  The current Budget and Payment Schedule is described in Exhibit B.

1.12 Specific License Agreement.  The term "Specific License Agreement" shall
     --------------------------                                              
     mean any license agreement pursuant to Articles IV and V of this Master
     License Agreement which specifies particular patents, royalties, and other
     terms.

1.13 Specific Research Agreement.  The term "Specific Research Agreement" shall
     ---------------------------                                               
     mean any subsequent research services agreement pursuant to Article II of
     this Master Agreement specifying a Research Program, a Research Period, a
     Budget and Payment Schedule, a Research Fee, and a schedule of
     Deliverables.

1.14 Research Period.  The term "Research Period" shall mean the period of time
     ---------------                                                           
     over which a Research Program is planned to be carried out.  The period of
     time shall be specified in a schedule.  The current Research Period is
     described in Exhibit B.

1.15 Research Fee.  The term "Research Fee" shall mean the fee paid by LTI to
     ------------                                                            
     Yissum in consideration for Yissum's performance of the Research Program.
     The Research Fee shall be paid according to the Budget and Payment
     Schedule.

1.16 Net Sales.  The term "Net Sales" shall mean gross invoice sales price
     ---------                                                            
     received by LTI or a sublicensee of LTI for sales of Licensed Product, less
     the sum of the following deductions: cash, trade discounts; sales, use,
     tariff, import/export duties or other excise taxes; transportation and
     handling charges and allowances, and credits to customers due to rejections
     or returns.  Net Sales denominated in all currencies other than U.S.
     dollars will be translated into U.S.  dollars, as determined by LTI for
     incorporation into its financial statements and shall comply with generally
     accepted accounting principles.

1.17 Yissum Proprietary Technology.  The term "Yissum Proprietary Technology"
     -----------------------------                                           
     shall mean and include any and all information, know-how, trade secrets,
     formulations, liposome compositions, methods, inventions, patents and
     patent applications, copyrightable subject matter, including without
     limitation technical specifications respecting process and products,
     reports, documents, drawings, oral communications, and samples and test
     materials owned or controlled solely by Yissum and provided by Yissum to
     LTI Personnel during the course of this Agreement.  It is agreed that LTI
     shall use Yissum Proprietary Technology solely for purposes contemplated by
     this Agreement.  Yissum Proprietary Technology shall not include
     information which is in the public domain.

1.18 Licensed Product.  The term "Licensed Product" shall mean any product or
     ----------------                                                        
     component thereof the manufacture, use or sale of which would constitute an
     infringement of any claim in a License Patent but for a license granted.

1.19 First Commercial Sale.  The term "First Commercial Sale" shall mean the
     ---------------------                                                  
     first sale of a Licensed Product.

[*]= CONFIDENTIAL TREATMENT REQUESTED

                                       4.
<PAGE>
 
                 ARTICLE II - THE RESEARCH AND ITS PERFORMANCE
                 ---------------------------------------------

2.1  This Master Agreement includes the current Research Program, which is
     described in Exhibit B.  It is anticipated that future Specific Research
     Agreements will be added to the Master Agreement by amendment from time to
     time.

2.2  LTI hereby undertakes to finance performance of the Research Program and
     Yissum takes it upon itself to procure the performance of the Research
     Program (hereinafter - "the Research") in the University, all as provided
     below in this Agreement.

2.3  Yissum shall procure the conduct of the Research in accordance with the
     Research Program during the Research Period and in accordance with the
     other terms and conditions as provided in Exhibit B or subsequent Specific
     Research Agreements.  LTI is entitled to request that Yissum add to or
     introduce changes in the Research during the course of the Research,
     subject to Yissum's written consent thereto which shall not be unreasonably
     withheld, provided that such additions or changes as aforesaid are
     coordinated a reasonable time in advance and also provided that the
     Research Fee as defined hereunder is adjusted to the satisfaction of
     Yissum.

     The parties hereto may, from time to time, extend the scope of the Research
     by amending or adding additional research services and by adding additional
     Specific Research Agreements, which after being signed by the parties
     hereto, shall be deemed to be governed by the terms of this Master
     Agreement.

2.4  Yissum may extend the Research Period as detailed in Exhibit B or any
     subsequent Specific Research Agreement for a period of up to ninety (90)
     days by written notice given to LTI at least thirty (30) days prior to the
     expiration of the Research Period.

2.5  LTI may apply to Yissum for an extension of the Research Period as detailed
     in Exhibit B or any subsequent Specific Research Agreement for a period of
     ninety (90) days, provided that written notice thereof is given to Yissum
     at least thirty (30) days prior to the expiration of the Research Period
     and provided that the parties shall have reached an agreement in writing
     regarding the amount of the supplemental finance, if any, payable by LTI to
     Yissum during the extension pursuant to this clause.

2.6  If the Research Period is extended pursuant to the provisions of clauses
     2.3 and/or 2.4 above, the provisions of this agreement shall apply to the
     additional period, mutatis mutandis.

2.7  From time to time during the Research Period or of the period extended as
     per section 2.3 or section 2.4, Yissum shall provide Deliverables to LTI in
     such specificity and format as the parties shall agree.  Payment of funds
     under Specific Research Agreements are expressly conditioned upon the
     delivery and approval by LTI of such Deliverables, which approval shall not
     be unreasonably withheld.

     Deliverables for the current Research Program are as described in Exhibit
     B.  All such Deliverables have been provided to LTI to LTI's full
     satisfaction.

[*]= CONFIDENTIAL TREATMENT REQUESTED

                                       5.
<PAGE>
 
     For the avoidance of doubt, it is hereby expressly acknowledged and agreed
     that the Master Agreement in general and this clause in particular shall
     not constitute an obligation and/or confirmation on the part of Yissum that
     any results and/or conclusions will be achieved in consequence of the
     performance of the Research and/or that an Invention may be developed as a
     result thereof.

2.8  LTI may at any time during the Research Period obtain any information
     relating to the Research's performance from Yissum, including plans and
     documents relating thereto.  LTI's representative may attend the site where
     the Research is being carried out, provided that the time of such visit is
     coordinated in advance with Yissum.

2.9  In consideration for the performance of the Research and in order to
     finance it, LTI undertakes to pay Yissum a Research Fee in the amount
     detailed in the Budget and Payment Schedule.  The Research Fee shall be
     paid to Yissum at the times, in installments and in accordance with the
     other terms and conditions detailed in Exhibit B or in any subsequent
     Specific Research Agreement.

2.10 Should the Research Period be extended as detailed in clause 2.3 and 2.4
     above and/or for any other reason, the parties shall determine by agreement
     the supplemental finance, if any, for the period of the extension and such
     fee, if any, shall be added to the Research Fee.  The terms and conditions
     of the Agreement shall apply, mutatis mutandis, to the supplemental
     Research Fee.

2.11 The Deliverables provided during performance of the Research Program shall
     be available for use by LTI in the course of its business.

2.12 Yissum shall have the right to use the Deliverables as long as it does not
     breach its confidentiality undertakings hereunder or its other obligations
     specified in the Master Agreement or amendments thereof.

                     ARTICLE III - INVENTIONS AND PATENTS
                     ------------------------------------

3.1  Yissum Personnel shall promptly provide LTI with a complete written
     disclosure of any Invention conceived or discovered in performance of the
     Research Program.  If LTI reasonably requires further information, LTI
     shall inform Yissum in writing within twenty (20) days of receiving the
     Invention disclosure.  After receiving such request, Yissum shall provide
     LTI with the required information within twenty (20) days.

3.2  LTI shall, upon reviewing such Invention disclosure, determine whether or
     not to file a patent application on the Invention described in such
     Invention disclosure to be done by a counsel selected by and working for
     LTI.  LTI's choice of counsel shall be subject to approval by Yissum, which
     approval shall not be withheld unreasonably.  LTI shall give written notice
     to Yissum of its decision within forty five (45) days of the receipt of the
     Invention disclosure, or within thirty (30) days of LTI having received
     from Yissum such additional information as LTI may reasonably require to
     reach an informed decision, whichever comes later. Failure by LTI to give
     written notice shall be deemed as notification that LTI does not wish to
     file and/or prosecute such patent application, and

[*]= CONFIDENTIAL TREATMENT REQUESTED

                                       6.
<PAGE>
 
     the right to the Invention shall revert exclusively to Yissum, LTI shall
     have no further right therein, and the provisions of clause 3.4 hereunder
     shall apply.

     LTI or LTI's patent counsel shall provide Yissum with copies of all
     relevant patent prosecution documentation for review by Yissum or Yissum's
     patent counsel.  Such copies shall be provided to Yissum a reasonable time
     for review before filing of the documentation.  LTI or LTI's counsel shall
     confer with Yissum on all such matters materially related to the
     preparation, filing, and prosecution and maintenance of patent applications
     and patents under this clause 3.2 and shall give due consideration to
     recommendations by Yissum regarding such matters.  Yissum agrees to keep
     all information relating to patent prosecution, including all
     documentation, confidential.

     In the event that LTI decides to discontinue any prosecution of a patent
     application based upon a Yissum Invention disclosure, LTI shall cooperate
     in transferring all relevant patent prosecution documents to Yissum, and
     the right to the Invention shall revert exclusively to Yissum, LTI shall
     have no further right therein, and the provisions of clause 3.4 hereunder
     shall apply.

3.3  LTI and Yissum acknowledge and agree that title to any Invention or patent
     resulting from an Invention made solely by Yissum personnel shall vest in
     Yissum that title to any Invention or patent resulting from an Invention
     made solely by LTI Personnel shall vest in LTI, and that title to
     Inventions and patents resulting from Inventions made jointly by Yissum
     Personnel shall vest jointly in Yissum and LTI.

3.4  Yissum may elect to file and prosecute a patent application on an Invention
     made by Yissum Personnel or jointly by Yissum Personnel and LTI Personnel
     or to disburse, commercialize or deal with such Invention as Yissum seems
     fit and in Yissum's own discretion, should LTI determine not to file or not
     to continue prosecution of a patent application.  In such case, filing and
     prosecution shall be made from Yissum's fund.

     LTI shall grant Yissum a perpetual world-wide royalty-free exclusive
     license in respect of such joint application and Yissum will have full
     right and authority to transfer, disburse or deal with such joint
     application as Yissum seems fit and in Yissum's sole discretion.

     Yissum shall retain full rights to any Invention in respect of which LTI
     decides not to file a patent application.

3.5  LTI shall pay all costs associated with the filing and prosecution of any
     patent application which LTI has determined to make.

                        ARTICLE IV - OPTION TO LICENSE
                        ------------------------------

4.1  LTI shall have an irrevocable option to obtain an exclusive license to
     make, have made, use, and sell any License Product covered by a License
     Patent the title to which shall rest solely in Yissum or jointly in LTI and
     Yissum.

[*]= CONFIDENTIAL TREATMENT REQUESTED

                                       7.
<PAGE>
 
4.2  The option granted hereunder shall be exercisable by written notice to
     Yissum ("Option Notice") within one year from the filing date of the patent
     application.

4.3  Should the Option Notice not be received by Yissum within the period set
     out above, Yissum will be entitled to grant exclusive or nonexclusive
     licenses pertaining to the License Patent to third parties, and LTI hereby
     undertakes to cooperate in any reasonable manner required in granting such
     licenses.

     LTI shall grant Yissum a perpetual world-wide royalty-free exclusive
     license in respect of such License Patents, the title to which shall rest
     jointly in LTI and Yissum, and Yissum will have full right and authority to
     transfer, disburse or deal with such License Patents as Yissum seems fit
     and in Yissum's sole discretion.

4.4  After exercising an option pursuant to section 4.1, LTI shall exercise
     reasonable due diligence to develop and market products using the
     technology claimed in a License Patent.  LTI shall provide Yissum with such
     progress reports on development and marketing activities as shall be agreed
     in the Specific License Agreement contemplated by section 5.2 hereinbelow.

                        ARTICLE V - ROYALTIES AND FEES
                        ------------------------------

5.1  Royalty and fees provisions for Amendment I: Specific License Agreement,
     which is executed concurrently with this Master Agreement, will incorporate
     the terms of this Master Agreement, except that any conflicting provisions
     in Amendment I: Specific License Agreement shall supersede this Article V
     hereinbelow.

5.2  This Article V shall be strictly applied to any Specific License Agreement
     executed subsequently to the Master Agreement.

5.3  Upon exercise of LTI's option for an exclusive license as set forth in 4.2
     above, the parties will enter into good faith negotiations of the terms of
     a Specific License Agreement, containing usual and customary business terms
     to be agreed upon between the parties.

     It is hereby specifically provided that the royalties payable to Yissum for
     an exclusive license shall be not more than [*] and not less than [*] of
     Net Sales of Licensed Product, taking into account any and all business
     considerations, including but not limited to: the commercial value relative
     to competitive products; the type of invention and breadth of claims; the
     marketing exclusivity afforded to LTI by virtue of the license; the
     particular market involved; joint inventorship by employees or agents of
     LTI; the existence of third party patents with claims related to the
     Licensed Product; and other LTI trade secrets or proprietary technology
     required for the manufacture, use, or sale of a Licensed Product.

     Failing an agreement between the parties on the amount of royalties, the
     amount shall be determined, within the above minimum and maximum amounts,
     by the arbitrator provided for in Article X hereunder.

[*]= CONFIDENTIAL TREATMENT REQUESTED

                                       8.
<PAGE>
 
5.4  In the event that LTI licenses to a third party the right to manufacture
     and market a Product claimed in a License Patent, LTI shall pay to Yissum
     [*] of all benefit or consideration received by LTI from the third party.
     It shall be LTI's obligation to inform the third party of this agreement
     with Yissum, to provide a mechanism for ensuring that Yissum receives
     sufficient accounting of the royalty obligation of the third party, and to
     provide that, should LTI cease to exist for any reason, the obligation of
     such third party to Yissum shall survive.

5.5  LTI shall pay Yissum royalties on a quarterly basis.  Payments shall be due
     within two calendar months of the end of any quarter in which royalties are
     payable.  All royalties shall be payable in U.S. funds.

5.6  Yissum shall be entitled to royalties from the date of First Commercial
     Sale on any Licensed Product sold whose composition, method of manufacture,
     or method of use is claimed in a License Patent.  Royalty payments accruing
     before issuance of a License Patent shall be paid within thirty (30) days
     of patent issuance.

                   ARTICLE VI.  PUBLICATION AND PRESENTATION
                   -----------------------------------------

6.1  LTI acknowledges that a basic objective of research activities performed by
     Yissum and Yissum Personnel is the generation and dissemination of new
     knowledge, and the commercialization thereof.

6.2  Yissum acknowledges that a basic objective of sponsorship by LTI of the
     Research  Program is the generation of data and results for LTI's
     legitimate business interests.  Yissum further acknowledges that worldwide
     patent protection on Inventions may be obtained only if patent applications
     are filed before Inventions are publicly disclosed, either orally or in
     written form.

6.3  Before oral or written disclosure of data and results from performance of
     the Research Program, Yissum Personnel shall submit copies of any proposed
     presentation or written abstract or manuscript to LTI at least forty-five
     (45) days in advance of disclosure to a third party.  LTI shall respond to
     Yissum in writing within fifteen (15) days of receipt of said proposed
     presentation or written publication.  LTI may request an additional delay
     of up to forty-five (45) days in the presentation or submission to perform
     whatever action LTI deems necessary to protect its legitimate business
     interests.

6.4  Publication by either party of research performed hereunder shall give
     proper credit to the other party, unless that party requests that it not be
     given credit.

6.5  Publications may be co-authored by Yissum Personnel and LTI Personnel
     consistent with reasonable professional standards for determining
     authorship.

6.6  LTI reserves the right to co-author oral or written disclosures by Yissum
     of data and results obtained in performance of the Research Yissum Program
     toward which the Company has given substantial scientific contribution.

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                       9.
<PAGE>
 
6.7  In the event that LTI declines to exercise its option to obtain a license
     to an Invention under clause 4.2, LTI shall submit copies of any proposed
     presentation or written abstract or manuscript describing any aspect of the
     subject Invention to Yissum for Yissum's prior review and approval.

                         ARTICLE VII.  CONFIDENTIALITY
                         -----------------------------

7.1  Yissum Personnel shall not disclose LTI Confidential Information to a third
     party without the written permission of LTI.  LTI shall not disclose Yissum
     Confidential Information to a third party without the written permission of
     Yissum.

7.2  In the event that Yissum acquires full rights to any Invention pursuant to
     section 3.4 or section 4.3, LTI shall refrain from publicly disclosing any
     Confidential Information directly related to such Invention for one (1)
     year from the date on which Yissum acquires the full rights.  Should Yissum
     desire an extension of the confidentiality period beyond one (1) year,
     Yissum shall request such an extension in writing, which request shall not
     be unreasonably refused by LTI.

                      ARTICLE VIII.  TERM AND TERMINATION
                      -----------------------------------

8.1  This Agreement shall be effective as of the Effective Date and continue in
     effect through December 31, 2004, unless sooner terminated by the parties,
     except that Specific License Agreements pursuant to this agreement may
     expire at a later date.

8.2  Either party shall have the right to terminate this Agreement by providing
     ninety (90) days written notice to the other party.

8.3  Termination of this Agreement shall not release either party from any
     theretofore accrued obligation including but not limited to performance of
     any then current Research Program and payment of any Research Fee.  It is
     understood and agreed that such obligations shall survive termination of
     this Agreement by either party hereto.

8.4  The Exhibit "A" Agreements are hereby terminated and have no further force
     or effect, with the exception of the following clauses:

     (a)  Article 12 (Confidential Information) of the 1985 Agreement.

     (b)  Article 7 (Confidential Information) of the 1987 Agreement.

     (c)  Article 11 (Confidential Information) of the 1988 Agreement.

8.5  Specific License Agreements incorporated into this Master License Agreement
     as amendments shall be terminable only under the provisions of the Specific
     License Agreements.  If this Master License Agreement is terminated prior
     to termination of a Specific License Agreement, portions of this Master
     License Agreement may be applied so as to give continuing meaning and
     effect to the Specific License Agreement.

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                      10.
<PAGE>
 
                           ARTICLE IX.  MISCELLANEOUS
                           --------------------------

9.1  LTI shall not use the name of Yissum in advertising or sales material
     without the prior written consent of Yissum.  LTI reserves the right to use
     the name of Yissum in disclosures required by Federal securities laws.

9.2  LTI agrees to hold Yissum harmless from any and all liability, including
     claims of personal or property injury or damage, product liability or   any
     other kind arising form LTI's use of the results under this Agreement.

9.3  Any notices given under this Agreement shall be in writing and delivered by
     telefax with a copy thereof delivered by certified mail, postage prepaid,
     addressed to the parties as follows:

     If to LTI:     Liposome Technology, Inc.
                    Attn: Corporate Secretary
                    960 Hamilton Court
                    Menlo Park, California  94025
                    Telefax:  415/323-9106

     If to Yissum:  Yissum Research Development Company
                    of the Hebrew University of Jerusalem
                    Attention:  Mr. Uri Litvin
                    46 Jabotinsky Street
                    PO Box 4279
                    Jerusalem 91042, Israel
                    Telefax:  972-2-660331

9.4  Neither party shall assign this Agreement to another without the prior
     written consent of the other party, unless such assignment is to a
     successor to all the business and assets of the transferor or to an
     affiliate (where an affiliate is an entity that either owns at least 51% of
     LTI or an entity that is at least 51% owned by LTI); provided that such
     successor or affiliate shall agree in writing with the other party to
     assume all obligations of the transferor under this Agreement in a manner
     satisfactory to the other party.

9.5  Yissum and LTI are independent contractors and neither is an agent, joint
     venturer, or partner of the other.

9.6  Force Majeure.  A party shall not be liable for non-performance or delay in
     -------------                                                              
     performance caused by any event reasonably beyond the control of such party
     including, but not limited to, war, hostilities, revolutions, riots, civil
     commotion, national emergency, epidemics, fire, flood, earthquake, force of
     nature, explosion, embargo, or any law, proclamation, regulation,
     ordinance, or other act of any court, government, or governmental agency.

9.7  This Agreement represents the entire agreement and understanding between
     the parties with respect to the subject matter of this Agreement and the
     Exhibit A Agreements and supersedes any prior and/or contemporaneous
     correspondence, discussions,

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                      11.
<PAGE>
 
     representations, negotiations, understandings or agreements, whether
     written or oral, of the parties regarding the subject matter of this
     Agreement and the Exhibit A Agreements.

9.8  Amendments and changes to this Master Agreement shall be of no force or
     effect unless they are in writing and signed by duly authorized
     representatives of the parties.

9.9  Captions in this Master Agreement are for information only.

                            ARTICLE X:  ARBITRATION
                            -----------------------

10.1 Any controversy or claim arising out of or relating to this Master
     Agreement or amendments thereof shall be settled by the following
     procedures:

     (a)  Either party may send the other written notice identifying the matter
          in dispute and involving the procedures of this Article X.

     (b)  Within fourteen (14) days after such written notice is given, one or
          more principals of each party shall meet in a mutually agreeable
          location for the purpose of determining whether they can resolve the
          dispute themselves by written agreement, and, if not, whether they can
          agree upon a third-party impartial arbitrator (the "Arbitrator") to
          whom to submit the matter in dispute for final and binding
          arbitration.

     (c)  If the parties fail to resolve the dispute by written agreement or
          fail to agree on the Arbitrator, Yissum or LTI may make application to
          an impartial Arbitrator in London, England who will decide the
          controversy under the law of Great Britain.

10.2 If the parties proceed under Section 10.1(b) or (c), the following
     procedures will be used:

     (a)  Within thirty (30) days of the selection of the Arbitrator, the
          parties shall meet at a place and time designated by the Arbitrator
          after consultation with the parties, and present their respective
          positions on the dispute.  Each party shall have no longer than one
          (1) day to present its position, the entire proceedings before the
          Arbitrator shall be no more than three (3) consecutive days, and the
          award shall be made in writing no more than thirty (30) days following
          the end of the proceeding.  Such award shall be a final and binding
          determination of the dispute.

     (b)  The prevailing party (as determined by the Arbitrator) shall in
          addition be awarded by the Arbitrator such party's own attorney's fees
          and expenses in connection with such proceeding.  The non-prevailing
          party (as determined by the Arbitrator,) shall pay the Arbitrator's
          fees and expenses.

                              ARTICLE XI:  NOTICE
                              -------------------

     In the event that either party desires to terminate specific rights of the
     other party as a consequence of such other party's failure to exercise its
     rights under specific provisions of
     this Agreement or amendments thereof, including but not limited to failure
     to comply 

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                      12.
<PAGE>
 
     with the specified notice periods of sections 2.4, 2.5, 3.2, or 4.4, the
     party wishing to terminate rights must provide a Notice to the other party
     specifying the provision and rights involved. Upon receipt of such Notice,
     the other party shall have 10 (ten) business days to exercise its rights
     under the provision.

IN WITNESS WHEREOF, the parties hereto have caused this Master Research Services
and License Agreement to be duly executed as of the day and year first written
above.

LIPOSOME TECHNOLOGY, INC.             YISSUM RESEARCH DEVELOPMENT COMPANY


BY: /s/ Sally A. Davenport            BY:  /s/ Moshe Vigdor
    ---------------------------            -----------------------------

TITLE: Corporate Secretary            TITLE: Managing Director Emeritus
       ------------------------              ---------------------------

DATE:  May 2, 1995                    DATE:_____________________________
       ------------------------                         

 
_______________________________
Attachments:

Exhibit A:  Prior Agreements Between LTI and Yissum

Exhibit B:  Current Research Program, i.e., (a) Exhibit "B" - Research Protocol
EXM-60, (b) Exhibit "C" - Research Protocol EXM-61, (c) Exhibit "D" Budget, (d)
Addendum No. 1 (EXM-76-LTI-93) - Letter of June 9, 1993, (e) Addendum No. 1 to
EXM-60-61 - Scope of Work, (f) EXM-LTI-76-94 - Research Protocol, (g) EXM-LTI-
76-94 - Budget.

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                      13.
<PAGE>
 
                                   Exhibit A
                                   ---------

                    PRIOR AGREEMENTS BETWEEN LTI AND YISSUM/1/


<TABLE>
<CAPTION>
Type of Agreement (EXM #)             DESCRIPTION
- -------------------------             -----------  
<S>                                   <C>
License and Clinical Trial            Initial clinical trials of [*] formulation.
Agreement (EXM-05)

Letter Agreement (EXM-07)             Continuation of clinical trials.

Research Services (EXM-08)            [*] methods and stability and toxicity characterization
                                      of such [*].

Extramural R&D (EXM-09)               Analytical and toxicity studies of [*].

Research Services (EXM-22)            Measurement of [*] and development of [*] technique for
                                      preparing [*].

Extramural Service (EXM-33)           [*] of [*] and other drugs.

Extramural Service (EXM-35)           [*] formulations.

Extramural Service (EXM-42)           Formulating [*] and providing analytical support for [*]
                                      studies of [*] formulations.

Extramural Service (EXM-48)           Support of clinical studies of [*] and initiation of
                                      clinical study of [*].

Extramural R&D (EXM-50)               [*] for treating [*] and [*].
</TABLE>

____________________
/1/ Copies of all agreements listed in this Exhibit A have been provided to Mr.
Uri Litvin, Managing Director, Yissum Research Development Company.

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                      14.
<PAGE>
 
                                   Exhibit B
                                   ---------

                            CURRENT RESEARCH PROGRAM

         a)  Exhibit B - Research Protocol EXM-60 (3 pages).

         b)  Exhibit C - Research Protocol EXM-61 (1 page).

         c)  Exhibit D - Budget (1 page).

         d)  Addendum No 1 (EXM-76-LTI-93) - letter of June 9, 1993 (1 page).

         e)  Addendum No. 1 to EXM-60-61 - Scope of Work (1 page).

         f)  EXM-LTI-76-94 - Research Protocol (2 pages).

         g)  EXM-LTI-76-94 - Budget (1 page).

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                      15.

<PAGE>
 
                                                                   EXHIBIT 10.30

[*]= Certain confidential information contained in this document, marked by
     brackets, has been omitted and filed separately with the Securities and
     Exchange Commission pursuant to Rule 24b-2 of the Securities Exchange Act
     of 1934, as amended.

                   AMENDMENT I:  SPECIFIC LICENSE AGREEMENT

     In accordance with article 4 and article 5 of the Master Agreement between
Yissum and LTI effective as of the date first written above, the parties agree
to amend the Master Agreement as follows:

1.   Definitions
     -----------

1.1  For the purposes of this Amendment, "Licensed Patents" shall mean the
     following five U.S. patents and any and all non-U.S. counterparts thereof
     and "Licensed Patent" shall mean any one of the following U.S. patents or
     any non-U.S. counterpart thereof:

     [*]

1.2  For the purposes of this Amendment, "Licensed Product" shall mean any
     product or component thereof the manufacture, use or sale of which would
     constitute an infringement of any claim in a Licensed Patent but for the
     license granted herein.  DOXIL(R) (DOX-SL(TM)) is a Licensed Product under
     this amendment.

1.3  For the purposes of this Amendment, "Net Sales" shall mean gross invoice
     sales price received by LTI or a sublicensee of LTI for sales of Licensed
     Product, less the sum of the following deductions: cash, trade discounts;
     sales, use, tariff, import/export duties or other excise taxes;
     transportation and handling charges and allowances, and credits to
     customers due to rejections or returns.  Net Sales denominated in all
     currencies other than U.S.  dollars will be translated in U.S.  dollars, as
     determined by LTI for incorporation into its financial statements and shall
     comply with generally accepted accounting principles.

2.   Grant of License
     ----------------

2.1  Yissum grants to LTI an exclusive, worldwide license to make, have made,
     use, and sell any Licensed Product.

2.2  Yissum also grants to LTI the right to issue sublicenses to products
     incorporating License Patents contemplated by this Amendment.  LTI shall
     pay to Yissum royalties for such sublicenses in accord with section 3.2
     hereof.

3.   Royalties
     ---------

3.1  LTI shall pay to Yissum a royalty of [*] of Net Sales of any Licensed
     Product sold by LTI or its affiliates.

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                       1.
<PAGE>
 
3.2  In the event that LTI sublicenses to a third party the right to manufacture
     and market a Product claimed in a License Patent, LTI shall pay to Yissum
     [*] of all benefit or consideration received by LTI from the third party.

3.3  LTI shall pay Yissum royalties on a quarterly basis.  Payments shall be due
     within two calendar months of the end of any quarter in which royalties are
     payable. All royalties shall be payable in U.S. funds.

4.   Infringement
     ------------

4.1  In the event that a Licensed Patent is infringed by an third party, LTI
     shall have the sole right, but not the obligation, to institute, prosecute
     and control any action or proceeding with respect to such infringement, by
     counsel of its own choice, including any declaratory judgment action
     arising from such infringement, provided however, that upon LTI failing to
     exercise such right, Yissum shall have the right to institute such an
     action or proceeding as it may be advised.  All damages or other monetary
     awards made or recovered in favor of LTI shall be subject to a payment to
     Yissum of [*] of the recovery by LTI (minus out-of-pocket expenses), or [*]
     of the total award, whichever is less.  All damages or other monetary
     awards made or recovered in favor of Yissum shall belong solely to Yissum.

5.   Records and Reports
     -------------------

5.1. LTI will notify Yissum within thirty (30) days of the date of the first
     commercial sale of a Licensed Product, and thereafter shall do the
     following:

5.2  LTI shall keep full, true, and accurate books and records of accounts
     containing all particulars necessary to show and compute all amounts
     payable to Yissum under this Amendment.  Said books of accounts shall be
     kept at LTI's place of business for at least three (3) years following the
     end of the calendar year or fiscal year to which they pertain and shall be
     made available, at reasonable times, for inspection by a representative of
     Yissum for purposes of verifying LTI's royalty statement and LTI's
     compliance in other respects with this Amendment.

5.3  LTI shall deliver to Yissum simultaneously with the payment of royalties as
     provided in Section 3 hereof a true and accurate report, giving such
     particulars of the business conducted by LTI during the appropriate
     calendar quarter under this Amendment as are pertinent to a royalty
     accounting hereunder including, where applicable, the following:  (a) all
     License Products sold; (b) the total billings for License Products sold;
     (c) the full supporting information for royalties received by LTI from a
     sublicensee; (d) deductions applicable as provided in paragraph 1.3 hereof;
     (e) total royalties due; and (f) the names of all sublicensees of LTI.

5.4  If no royalties are due for any calendar quarter, the report of LTI for
     that quarter, attested by an authorized corporate officer, shall so state.

6.   Term and Termination
     --------------------

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                       2.
<PAGE>
 
6.1  This Amendment shall be effective through the life of the last to expire
     Licensed Patent unless sooner terminated pursuant to the terms hereof.

6.2  Either party shall have the right to terminate this Amendment upon sixty
     (60) days written notice to the other party in the event of any material
     failure of that party to comply with any material term hereof, which
     failure shall not have been remedied within sixty (60) days of delivery of
     notice specifying the failure.

7.   Warranty
     --------

7.1  Yissum expressly warrants that it has the authority to bind [*], Jerusalem,
     Israel to this Amendment.  Further, Yissum agrees to indemnify LTI against
     any damages or defense costs associated with any breach of aforesaid
     warranty.

8.   Miscellaneous
     -------------

8.1  This Amendment and the portions of the Master Agreement incorporated herein
     represent the entire agreement and understanding between the parties with
     respect to the subject matter and supersede any prior and/or
     contemporaneous discussions, representations, or agreements, whether
     written or oral, of the parties regarding this subject matter.  Further
     amendments or changes shall be of no force unless they are in writing and
     signed by duly authorized representatives of the parties.

IN WITNESS WHEREOF, the parties hereto have caused this Specific License
Agreement to be duly executed as of the day and year first written above.

LIPOSOME TECHNOLOGY, INC. YISSUM RESEARCH DEVELOPMENT LIPOSOME TECHNOLOGY, INC.

BY: Sally A. Davenport                  BY: /s/ Uri Litvin, /s/ Moshe Vigdor
   -----------------------------           -------------------------------------

TITLE: Corporate Secretary              TITLE:  Managing Director
      --------------------------            ------------------------------------

DATE: May 2, 1995                       DATE: June 18, 1995
     -------------                           ---------------

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                       3.

<PAGE>
 
                                                                   EXHIBIT 10.31

[*]= Certain confidential information contained in this document, marked by
     brackets, has been omitted and filed separately with the Securities and
     Exchange Commission pursuant to Rule 24b-2 of the Securities Exchange Act
     of 1934, as amended.

                  AMENDMENT II:  SPECIFIC RESEARCH AGREEMENT

Whereas Yissum Research and Development Company of the Hebrew University of
Jerusalem ("Yissum") and SEQUUS Pharmaceuticals, Inc. ("SEQUUS"; formerly
Liposome Technology, Inc.) are parties to a MASTER RESEARCH SERVICES AND LICENSE
AGREEMENT ("Master Agreement") entered into on or about January 1, 1995; and

Whereas the parties desire to continue a research program under the Master
Agreement;

Therefore, Yissum and SEQUUS agree as follows:

In accordance with article II of the Master Agreement, the parties agree to
amend the Master Agreement as follows:

1.1  Research Program.  The Research Program is described in Appendix A:
"Proposal for EXM Studies for 1.7.96.-30.6.97.

1.2  Research Period.  The Research Period shall be from July 1, 1996 through
June 30, 1997.

1.3  Research Fee.  The Research Fee shall be [*].

1.4  Budget and Payment Schedule.  The Budget and Payment Schedule shall be as
follows:

     Upon signing:  [*]

     Upon receipt and approval of interim report:  [*]

     Upon receipt and approval of final report:  [*]

1.5  Schedule of Deliverables

     Interim report due:  February 1997

     Final report due:  July 1997

IN WITNESS WHEREOF, the parties hereto have cause this Specific Research
Agreement to be duly executed.

SEQUUS PHARMACEUTICALS, INC.            YISSUM RESEARCH DEVELOPMENT COMPANY

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                      1.
<PAGE>
 
By: /s/ Joseph J. Vallner             By: /s/ Rueven Ron
   --------------------------            ---------------------------------

Title: Sr  V.P., R+D                  Title: Deputy Managing Director
      -----------------------               ------------------------------

Date: 9/11/96                         Date: October 10th 1996
     ------------------------              -------------------------------

[*] =CONFIDENTIAL TREATMENT REQUESTED

                                      2.

<PAGE>
 
                                                                   Exhibit 10.32

[*]= Certain confidential information contained in this document, marked by
     brackets, has been omitted and filed separately with the Securities and
     Exchange Commission pursuant to Rule 24b-2 of the Securities Exchange Act
     of 1934, as amended.

                             AMENDMENT TO AGREEMENT
                                        

     WHEREAS, YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF
JERUSALEM of 46 Jabotinsky Street, Jerusalem, Israel (hereinafter referred to as
"Yissum") and SEQUUS PHARMACEUTICALS, INC. (formerly, Liposome Technology, Inc.
or "LTI"), a Delaware Corporation, of 960 Hamilton Court, Menlo Park, California
94025 (hereinafter referred to as "SEQUUS") previously entered into a certain
Master Research Services and License Agreement of January 1, 1995 (the
"Agreement");

     AND WHEREAS, Yissum and SEQUUS now wish to clarify and amend the Agreement
by this instrument ("Amendment to Agreement") effective June 1, 1998 ("Effective
Date of Amendment to Agreement");

     NOW THEREFORE, the parties hereto agree as follows:

1.  Capitalized Terms: The terms capitalized in this Amendment to Agreement
    -----------------                                                      
shall have the same meaning as specified in the Agreement.

2.  Definition of "Sublicense": Sublicense shall mean the granting by SEQUUS to
    -------------------------                                                  
a third party of the right to INDEPENDENTLY use a License Patent (i.e.,
technology licensed from Yissum).  The term "INDEPENDENTLY" shall mean the
undertaking by a third party of all or substantially all of a product
development effort with no or with negligible assistance from SEQUUS. (For
example, SEQUUS has obtained an exclusive license to Technology for [*].  SEQUUS
uses this Technology to manufacture DOXIL and, appropriately, pays the Licensor
a royalty on product sales.  SEQUUS has sublicensed this Technology to a third
party for the development of in vitro diagnostic products.  SEQUUS receives
royalty payments on the sale of such diagnostic products and, appropriately,
shares its royalty payments with the Licensor.)

     Conversely, the granting by SEQUUS to a third party of the right to assist
in the development, distribution, marketing, sale or manufacture of a
pharmaceutical product encompassing a License Patent, all or substantially all
of which product has been developed by SEQUUS, shall NOT constitute a Sublicense
as the term is used herein.  By way of example, SEQUUS's agreement with
Schering-Plough for the distribution of DOXIL does not constitute a Sublicense.
Similarly, SEQUUS's agreement with [*] for the pharmaceutical development of a
[*] does not constitute a Sublicense.

3.  Amendment of Clause 5.3 the Agreement:  (the old Clause 5.3 is deleted) Upon
    -------------------------------------                                       
exercise of SEQUUS's option for an exclusive or a non-exclusive license as set
forth in 4.2 of the Agreement, the parties will enter into good faith
negotiations of the terms of a Specific License Agreement containing usual and
customary business terms to be agreed upon between the parties.

[*] =CONFIDENTIAL TREATMENT REQUESTED  

                                      1.
<PAGE>
 
     The above terms and royalties will be determined at such time as the
business considerations specified below are known by the parties but in any case
not later than by the time of submission of NDA.

     It is hereby specified that the royalties payable to Yissum for an
exclusive or a non-exclusive license shall be not more than [*] and not less
than [*] of Net Sales of Licensed Product, taking into account any and all
business considerations, including but not limited to: the commercial value
relative to competing products; the type of invention and breadth of claims; the
marketing exclusivity afforded to SEQUUS by virtue of the license; the
particular market involved; joint inventorship by employees or agents of SEQUUS;
the existence of third party patents with claims related to Licensed Product;
and other SEQUUS trade secrets or proprietary technology required for
manufacture, use, or sale of Licensed Product.

     Failing an agreement between the parties on the amount of royalties, the
amount shall be determined, within the above minimum and maximum amounts, by the
arbitrator provided for in Article X of the Agreement.

     Notwithstanding the above, SEQUUS will be entitled to exercise the option
for a nonexclusive license for "Yissum Technology" provided that, if SEQUUS
wants to obtain such nonexclusive license, Yissum may also use or sublicense (on
a nonexclusive basis) to a third party that Technology as well as applicable
"SEQUUS Technology" for the development of product(s) which do not compete with
"SEQUUS Products".  Furthermore, provided that "SEQUUS Technology" is applicable
to development of product(s) with a third party and provided that such
product(s) do not compete with "SEQUUS Products", either party may request a
non-exclusive license to the other party's technology and such request shall not
be unreasonably withheld.

4.   Royalties Payable to Yissum for Sublicense: For any Sublicense (as defined
     ------------------------------------------                                
in paragraph 1 of this Amendment to Agreement) granted by SEQUUS to a third
party, SEQUUS shall pay to Yissum [*] of all royalty and other financial
consideration and/or quid pro quo that SEQUUS may receive from such Sublicensee.

5.   Consideration for Amendment to Agreement: Upon execution of this Amendment
     ----------------------------------------                                  
to Agreement, SEQUUS shall pay Yissum the amount of [*] and hereby grants to
Yissum (for no additional consideration) the right to purchase [*] shares of
SEQUUS Common Stock at a share price of [*] per share (i.e., the closing price
of SEQUUS Common Stock on the Nasdaq national market system on [*]) in
accordance with the SEQUUS Consultant Stock Option Plan.  The shares under the
above program to be issued upon the exercise of the stock option and the payment
of the share price will be ordinary shares of the Company with voting and equity
rights and all other rights not to be inferior than the current shares of the
Company.

6.   Joint Inventions: Notwithstanding the terms of the Agreement, it is hereby
     ----------------                                                          
agreed that any Invention jointly conceived by SEQUUS and Yissum Personnel
acting as advisors to SEQUUS shall be joint inventions of Yissum and SEQUUS to
be governed by international patent law and practice that applies to jointly-
owned inventions.

[*] =CONFIDENTIAL TREATMENT REQUESTED  

                                      2.
<PAGE>
 
7.  Potential for Additional Funding: If SEQUUS receives funding for the
    --------------------------------                                    
development (including the clinical development) of a product incorporating
"Yissum Technology", SEQUUS shall provide [*] as appropriate with an opportunity
to participate in the development activities provided that such activities are
under the control of SEQUUS and further provided that, at the sole discretion of
SEQUUS, it is determined that [*] have the capabilities to participate in a
timely manner in the development activities.

8.  See 8 below

9.  Entire Agreement: This Amendment of Agreement and the Agreement represent
    ----------------                                                         
the entire agreement and understanding between the parties with respect to the
subject matter and supersede any prior and/or contemporaneous discussions,
representations, or agreements, whether written or oral, of the parties
regarding the subject manner.  Further amendments or changes shall be of no
force unless they are in writing and signed by duly authorized representatives
of the parties.

    IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
Agreement to be duly executed as of the Effective Date of this Amendment to
Agreement.

YISSIM RESEARCH DEVELOPMENT COMPANY SEQUUS PHARMACEUTICALS, INC.

By: /s/ Moti Perlmutter                    By: /s/ I. Craig Henderson
   -------------------------------------      ----------------------------------
   Moti Perlmutter, Managing Director         I. Craig Henderson, M.D., Chairman
   Director and CEO                           of the Board and CEO   

Date: June 11, 1998                        Date:________________________________
     -----------------------------------

8.   Research Funding. Per the letter from Dr, I. Craig Henderson to Mr. Moti
     ---------------- 
Perlmutter (a copy of which is attached hereto) Seques hereby undertakes and is
committed provide a combined total of a minimum amount not less than [*] for a
period of [*], to support research activities conducted in the laboratories of
[*], respectively, such funding to commence on the Effective Date of this
Amendment of Agreement.

[*] =CONFIDENTIAL TREATMENT REQUESTED    

                                      3.
<PAGE>
 
                 [Letterhead of Sequus Pharmaceuticals, Inc.]


June 4, 1998                                                     Federal Express
                                                                 ---------------

Mr. Moti Perlmutter
Managing Director and CEO
Yissum Research Development Company
of the Hebrew University of Jerusalem
46 Jabotinsky Street
POB 4279
Jerusalem 91042, Israel

Re: Research Funding for the Laboratories of [*]

Dear Mr. Perlmutter:

This is to confirm that according to Clause 8 in the Amendment to Agreement
SEQUUS Pharmaceuticals, Inc. will provide a combined total of a minimum not less
than [*], for a period of [*], to support research activities conducted in the
laboratories of [*], respectively, such funding to commence on the Effective
Date of the Amendment to Agreement (i.e., the Amendment to the Master Research
and License Agreement between Yissum and SEQUUS).  It is understood that the
precise funding commitment for any [*] during the [*] funding commitment period
shall be made no later than [*].  It is also understood that any such research
funding shall be governed by all applicable provisions of the January 1995
Master Research and License Agreement between the parties.

Please indicate your concurrence with this research funding arrangement by
signing below and returning one copy to me.

Sincerely,

SEQUUS Pharmaceuticals, Inc.

/s/ I. Craig Henderson

I Craig Henderson, M.D.
Chairman of the Board
Chief Executive Officer


Agreed: /s/ Moti Perlmutter                            Date: June 11, 1998
        -----------------------------------                  ------------------
        Mr. Moti Perlmutter, Managing Director and CEO
        Yissum Research and Development Company
        of the Hebrew University of Jerusalem

[*] =CONFIDENTIAL TREATMENT REQUESTED


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