Document:

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                                                                  EXHIBIT 10.14

                 HOMEPLUG POWERLINE ALLIANCE SPONSORS' AGREEMENT

This Agreement is effective as of ___________________ 2000 by and between 3Com
Corporation ("3Com"), Advanced Micro Devices, Inc. ("AMD"), Cisco Systems, Inc.
("Cisco"), Compaq Computer Corporation ("Compaq"), Conexant Systems, Inc.
("Conexant"), Enikia Inc. ("Enikia"), Intel Corporation ("Intel"), Intellon
Corporation ("Intellon"), Motorola _________, S3 Incorporated, ("S3"), Tandy
Corporation ("Tandy"), Texas Instruments, Inc. ("TI") and the Affiliates of
these Corporations, collectively referred to as the "Sponsors" of the HomePlug
Powerline Alliance, Incorporated ("Alliance").

                                   Background

A.     The Sponsors intend to define, establish and support a home networking
       system specification which provides the basic networking capability but
       is also compatible with other uses of the home power outlets. This
       specification is referred to as Home Powerline Networking.

B.     The Sponsors also intend to develop a compliance testing portion of the
       specification to verify compliance with the Home Powerline Networking
       specification.

C.     The Sponsors wish to encourage broad and open industry adoption of Home
       Powerline Networking and wish to facilitate the provision of necessary
       licenses to do so. The Sponsors intend to provide the Home Powerline
       Networking specification to an appropriate standards body.

D.     The Sponsors also desire to provide for the possibility of issuing
       revisions and updates to the Home Powerline Networking specification.

                                    Agreement

1.     Definitions

1.1.   "Adopter" means any entity that has executed an identical copy of the
Adopter's Agreement in the form attached hereto as Attachment A ("Adopter's
Agreement"), including its Affiliates.

1.2    "Affiliate" is an entity that directly or indirectly controls, is
controlled by, or is under common control with another entity, so long as such
control exists. "Control" means beneficial ownership of more than fifty percent
of the voting stock or equity in an entity.

1.3    "Fellow Adopters" are all the Sponsors, Participants, and Adopters.

1.4    "Participant" means an entity that has executed an identical copy of the
Participant Agreement in the form attached hereto as Attachment B
("Participant's Agreement).

1.5    "Necessary Claims" shall mean those claims of all patents, other than
design patents and design registrations, throughout the world entitled to an
effective filing date prior to January 1, 2005, which a Fellow Adopter, as
applicable, or its Affiliates has the right, at any time during the

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term of this Agreement, to grant licenses of the scope granted herein without
such grant or the exercise of rights thereunder resulting in payment of
royalties or other consideration to third parties (except for payments to
Affiliates or to employees within the scope of their employment) and (i) which
are necessarily infringed by an implementation of a version of the Specification
adopted by the Sponsors pursuant to Section 4.3 below, where such infringement
could not have been avoided by another commercially reasonable noninfringing
implementation of such Specification, or (ii) for which infringement is based on
an implementation of any example included in the body of the Specification.
Necessary Claims shall not include, and no license shall apply to,
implementation examples included solely in any appendix, exhibit or other
attachment to the actual Specification.

1.6 "Specification" means the document entitled Home Powerline Networking as
finally adopted by the Sponsors pursuant to Section 4.3 below, authored and
published by the Alliance; any updates as finally adopted pursuant to Section
4.4; and non-final versions until a first final version is adopted. The scope of
the Specification shall be restricted to that information descriptive (i) of the
electrical characteristics and protocols of physical interfaces, (ii) of a
standard set of transmitted signals and (iii) of such test procedures as
required to establish conformance of devices to items (i) and (ii).
Notwithstanding the foregoing, for the purpose of defining which patent claims
are Necessary Claims, the Specification shall be deemed not to include (1) any
enabling technologies that may be needed to make or use any product that
complies with the Specification but are not themselves expressly set forth in
the Specification, (including, for example, basic computer and network
technology, Applications Programming Interfaces ("APIs"), semiconductor
manufacturing technology, compiler technology, object-oriented technology and
operating system technology); (2) the implementation of specifications developed
elsewhere but referred to or incorporated in the body of the Specification; or
(3) any portions of any product and any combinations of any product, the purpose
or function of which is not required for compliance with the Specification.

1.7    "Fully Compliant" means: (a) an implementation of the Specification which
supports or implements all of the portions of the Specification defined by the
Specification as being "Required" or (b) an implementation of all portions of
the Specification required for a specific type of product or component thereof.

1.8    "Contributions" mean any ideas, suggestions or comments submitted in
writing by a representative of a Sponsor or a Participant, and approved by such
Sponsor or Participant, for the purpose of proposing additions to or
modifications of the Specification.

1.9    "Confidential Information" may include but is not limited to, proprietary
information of the Sponsors, the nonfinal versions of the Specifications and the
contributions each Sponsor and each Participant makes to the specification.

2.     Covenants

2.1    Grants of Licenses to Sponsors, Participants, and Adopters. Upon
agreement by the Sponsors as to the final version of the text of the
Specification as set out in Section 4.3, each Sponsor (on behalf of itself and
its Affiliates) hereby covenants to grant to each of the other Sponsors, all
Participants, and all Adopters under reasonable terms and conditions that are

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demonstrably free of any unfair discrimination, a nonexclusive, irrevocable,
nontransferable, nonsublicenseable worldwide license under its Necessary Claims
to implement the Specification and to make, have made, use, import, offer to
sell, lease, sell, promote and otherwise distribute the resulting implementation
(whether implemented in hardware, software, or some combination of hardware and
software); provided, however, (i) the resulting implementation is Fully
Compliant, (ii) such license shall not extend to features of a product which are
not required to comply with the Specification or to other specifications and
APIs, such as a Sponsors' operating system API, and (iii) such license shall be
granted only to the extent that the resulting implementation is used for the
purposes of home networking over the powerline. Each Sponsor (on behalf of
itself and its Affiliates) hereby agrees that it shall not seek and injunction
and hereby waives its rights to an injunction, with respect to infringement of
the Sponsors Necessary Claims by products or services that are substantially
Fully Compliant with the Specification, against Fellow Adopters that are
entitled to receive a license under the Sponsor's Necessary Claims. Such waiver
of injunctive relief shall not prohibit a Sponsor from seeking or receiving
damages, including enhanced damages for willful infringement, from any Fellow
Adopter.

2.2    Enforcement of Agreements. Each of the Sponsors shall promptly notify the
other Sponsors of any breach, that may come to such Sponsor's attention, of any
Sponsor's Agreement, Adopter's Agreement, or Participant's Agreement by a
Sponsor, Adopter or Participant. Each Sponsor shall have the right to enforce
compliance with the terms of such agreements by Sponsors, Adopters and
Participants upon notice to the other Sponsors. Any Sponsor may, at its option,
bring suit against such other Sponsor, Adopter or Participant to enforce such
agreement, provided the enforcing Sponsor has given written notice of breach to
the breaching party. The notice shall summarize the breach and the corrective
action, which must be undertaken to cure the breach. In the event the breach is
not cured within (30) days from the date of notice, the enforcing Sponsor may
bring suit to enforce the agreement without liability to the enforcing Sponsor
or the other Sponsors, and may seek against the breaching party any remedy
available at law or equity provided, however, that if such breach is of a nature
which cannot reasonably be cured within thirty (30) days, then the suit may not
be brought against the breaching party so long as it is proceeding with due
diligence to cure such breach and it does so within a reasonable time; but in no
event shall the cure period extend beyond ninety (90) days of the notice date
without a 2/3 majority vote of the Sponsors. The other Sponsors shall, at their
discretion, provide reasonable assistance in the prosecution of such suit, at
the expense of the enforcing Sponsor (except for the value of time of the
assisting party's employees); provided, however, that no Sponsor shall be
required to be named as a party to such suit. In the event a Sponsor does not
wish to participate in the enforcement action and is nonetheless joined as a
necessary party or the like, the Sponsor(s) initiating the enforcement action
agree(s) to pay the reasonable expenses incurred by the joined Sponsor in such
enforcement action (except for the value of time of the assisting Sponsor's
employees). The enforcing Sponsor(s) will retain any recovery in such suit.

2.3    Copyright Notices. Any publication of the Specification shall contain an
appropriate copyright notice in the name of the Alliance. Public references to
the Specification shall attribute authorship to the Alliance to the extent
practical.

2.4    References to Specification. The Sponsors hereby agree not to assert
against any Fellow Adopter any trademark or trade name rights they may have now
or hereafter in any name or logo unanimously adopted by the Sponsors for use in
connection therewith or with this Agreement. If

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the Sponsors agree to claim or assert trademark or trade name rights in such
name or logo, they agree to use commercially reasonable efforts, that represent
the best interests of all parties, to agree on the nature of ownership,
licensing, guidelines for usage, and registration of such name or logo. Prior to
adoption of a new name or logo, the Sponsors shall transmit a proposed name or
logo to the Participants and Adopters for comments regarding any claimed rights
in such new name or logo. The Sponsors will not use any name or logo unanimously
adopted by the Alliance except to refer to the Specification and to products
which fully comply with the Specification.

3.     Copyright Ownership/Modifications to Specification

3.1    Title. Each Sponsor hereby grants to the Alliance a nonexclusive,
irrevocable, nontransferable, nonsublicensable, royalty-free worldwide license
under all copyrights contained in its Contributions submitted by a
representative of a Sponsor, and approved by such Sponsor, for inclusion in the
Specification. Each Sponsor agrees that the Alliance hereby grants to each of
the Sponsors a royalty free, fully paid-up, nonexclusive, irrevocable,
nontransferable, nonsublicensable worldwide license under the Alliance's
copyrights in the Specifications, including the right to enforce the copyright
in the Specifications on behalf of the Alliance. Any Sponsor may propose a
copyright enforcement action, and the other Sponsors shall have the right to
exercise all right, title, and interests to its copyrights at their own expense
and at their own discretion. On request of any Sponsor considering suit against
a third party to enforce the Alliance's copyrights, the other Sponsors shall, at
their discretion, provide reasonable assistance in the prosecution of such suit,
at the expense of the prosecuting party (except for the value of time of the
assisting Sponsor's employees); provided, however, that no Sponsor shall be
required to be named as a party to such suit. In the event a Sponsor does not
wish to participate in the copyright enforcement action and is nonetheless
joined as a necessary party or the like, the Sponsor(s) initiating the
enforcement action agree(s) to pay the reasonable expenses incurred by the
joined Sponsor in such enforcement action (except for the value of time of the
joined Sponsor's employees). The enforcing Sponsor(s) will retain any recovery
in such suit resulting from infringement of the copyrights. If a Sponsor wishes
to register the Specification with the Copyright Office, it may do so at its own
expense in the name of the Alliance, and the other Sponsors shall cooperate with
such Sponsor to the extent reasonably required to file the application for
copyright registration. No further obligation will exist after the application
is filed.

3.2    Modifications. Any modifications to or derivative works of the
Specification, whether or not submitted by a representative of a Sponsor, and
approved by such Sponsor, for inclusion in the Specification shall be owned
solely by the Sponsor(s) creating them, subject to the underlying copyright of
the Alliance in the Specification, unless and until such modification or
derivative work is adopted as an update to the Specification, at which time the
copyright shall be owned by the Alliance. However, except for excerpts or
quotations from a published Specification, no Sponsor shall publish such a
modified or derivative work or translation into a foreign language without the
express written consent of the other Sponsors. This restriction on modified or
derivative works shall not apply to any Sponsor once the Sponsor withdraws,
provided however the Alliance shall retain its right to an assignment of the
copyrights in such modified or derivative works by adopting them as an update to
the Specification. The parties will cooperate from time to time with respect to
responsibility for translation of the Specifications into foreign languages, and
shall equally share the out-of-pocket costs therefor.

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4.     Specification Completion

4.1    Specification Release to Participants and Adopters. The Sponsors shall
cooperate to finalize the Specification according to the following procedure:

       4.1.1  Any proposal for the Specification shall be authorized for release
              to third parties (including Adopters and Participants) only by 2/3
              majority agreement of the Sponsors.

       4.1.2  The Sponsors shall use reasonable efforts to expedite
              edits/changes suggested to each revision of the Specification as
              quickly as possible.

4.2    Specification Development. Non-final revisions of the Specification may
be designated unreleased or released and shall be maintained in confidence and
only disclosed pursuant to the terms herein. Unreleased revisions shall only be
shared among the Sponsors and Participants. Agreement of a 2/3 majority of the
Sponsors is required to designate an unreleased revision as a released revision.

4.3    Published Specification. The Specification or any proposed update thereof
shall be deemed final and is adopted when the Sponsors agree by a 2/3 majority,
in writing, that such version of the Specification is final. For purposes of
voting on the Specification or for any other voting under this Agreement, the
Affiliates shall not be entitled to vote and their approval is not required in
connection with any vote. Such final Specification shall become effective and be
made publicly available after the thirty (30) day period specified in Section
4.3.1.

       4.3.1  Each Sponsor shall have the opportunity to review the final draft
              of a Specification or revision prior to voting on adopting such
              final draft. The Sponsors therefore agree that all Sponsors shall
              be notified in writing or by email when a final draft of a
              Specification or revision is available for review. The review
              period shall be thirty (30) days from the notification. Each
              party, within such thirty (30) days, may identify with
              particularity any portions of the Specification or revision it
              finds objectionable and shall provide a reasonable explanation for
              the objection. No Sponsor, Participant, or Adopter shall have any
              duty to perform any patent search prior to any vote on a
              Specification or revision.

       4.3.2  Any Sponsor that votes against the Specification as adopted may
              choose to withdraw from this Agreement under Section 6 by written
              notice to all other Sponsors sent within thirty (30) days after
              the date on which the Secretary receives the 2/3 majority
              necessary for adoption of the Specification. Following such
              withdrawal, the Sponsor will have only those rights and
              obligations hereunder set forth under Section 6.2. A Sponsor shall
              be considered to have adopted the final Specifications, with all
              rights and obligations with respect thereto under this Agreement,
              if such Sponsor (i) voted in favor of the proposed final
              Specifications or (ii) failed to vote or voted against such
              proposed final Specifications and did not so withdraw within such
              thirty days.

4.4    Updates to the Specification. Once Sponsors have agreed upon a final
Specification under Section 4.3 above, any updates or alterations to the
finalized Specification shall be treated as a

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proposal to develop a new Specification, and shall be subject to the same
processes and procedures used for development of the original Specification as
outlined above. Each Sponsor may, in its sole discretion, cooperate with
development of such new Specification or withdraw with regard to such new
Specification without withdrawing from an earlier adopted Specification.
Adoption of such a new Specification shall not terminate any right or obligation
of any Sponsor under this Agreement, including the licenses granted, received or
agreed to be made available with respect to an earlier adopted Specification.

5.     Confidentiality

5.1    Confidential Information. Each Sponsor will maintain the Confidential
Information of the other Sponsors, the non-final versions of the Specification
and the Contributions each other Sponsor and each Participant makes to the
Specification in confidence with at least the same degree of care that it uses
to protect its own confidential and proprietary information, but no less than a
reasonable degree of care under the circumstances and will neither disclose nor
copy the non-final versions of the Specification except as necessary for its
employees and contractors (under obligation of confidentiality) with a need to
know for the purpose of developing or updating the Specification or implementing
a product according to the Specification. Obligations of confidentiality shall
only extend to Confidential Information that: (a) is marked to connote its
confidential or proprietary nature at the time of disclosure; or, (b) is
unmarked (e.g. orally disclosed or that by its nature can not be marked), but
identified and treated as confidential at the time of disclosure, and is
designated as confidential in a written memorandum in the form of the HomePlug
Powerline Alliance Oral Confidential Information Memorandum attached hereto as
Attachment C and sent to recipient's representative within thirty (30) days of
disclosure, summarizing the Confidential Information sufficiently for
identification. Any information incorporated in a particular revision of the
Specification, including any exhibits or attachments thereto, shall be permitted
to be released upon agreement of the Sponsors pursuant to Section 4 hereof. Any
copies which are made will be marked "confidential," "proprietary" or with a
similar legend. Unless the parties agree otherwise, this obligation of
confidentiality will expire 3 years from the date of disclosure of such
Confidential Information hereunder. A party will not, however, be liable for the
disclosure of any Confidential Information which is:

       a)     rightfully in the public domain other than by the recipient's
              breach of a duty;

       b)     rightfully received from a third party without any obligation of
              confidentiality, or

       c)     rightfully known to the recipient without any limitation on use or
              disclosure prior to its receipt from the disclosing party; or

       d)     independently developed by employees of the recipient without
              access to the disclosed information; or

       e)     rightfully disclosed as required by law, provided however, that
              prior to disclosing such Confidential Information, the recipient
              subject to the order to disclose promptly notifies the disclosing
              party and upon the disclosing party's request, cooperate with the
              disclosing party in contesting the request to disclose;

       f)     made public by unanimous agreement of the Sponsors; or

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       g)     inherently disclosed in the marketing or sale of a product or
              service.

5.2    Residuals. This Agreement and the terms of confidentiality hereunder
shall not be construed to limit any Sponsors right to independently develop or
acquire products or technology, including similar or competing products or
technology, without the use of another party's Confidential Information. Any
party shall be free to use for any purpose the residuals resulting from access
to or work with the Confidential Information defined in Section 5.1, provided
that such party shall maintain the confidentiality of such Confidential
Information as provided herein. The term "residuals" means information in
non-tangible form, which may be inadvertently retained by persons who have had
access to such Confidential Information, including ideas, concepts, know-how or
techniques contained therein. No party shall have any obligation to limit or
restrict the assignment of such persons or to pay royalties for any work
resulting from the use of residuals. However, the foregoing shall not be deemed
to grant to any party a license under the other party's copyrights, patents, or
trademarks. Contributions will be based upon the actual knowledge of the
submitting Sponsor's representative providing the Sponsor's input. For purposes
of this section, "actual knowledge" does not include knowledge of the Sponsor
inputted to such employee or residuals resulting from such employee's access or
work with the confidential or proprietary information of third parties, provided
that any agreement between such Sponsor and any such third party protecting such
confidential or proprietary information includes an agreement, express or
implied, that the parties are free to use such residuals for such purpose.

6.     Withdrawal

6.1    Notice of Withdrawal. A Sponsor may, on written notice to the other
Sponsors, withdraw from this Agreement.

6.2    Effect of withdrawal. Upon withdrawal by a Sponsor.

       6.2.1  All covenants and licenses granted by and to such withdrawing
              Sponsor with respect to any final Specification adopted by the
              withdrawing Sponsor as of the date of such withdrawal shall
              continue in full force and shall extend to and from entities who
              were, are or later become Fellow Adopters (and their Affiliates as
              provided in the license), even after such withdrawal. No covenant
              or license with respect to patents and copyrights shall be deemed
              granted or received or required to be granted by such withdrawn
              Sponsor as to a new Specification or new revisions of the
              Specification adopted after the date of such withdrawal, except as
              set forth in Section 6.2.3. For the avoidance of doubt, in the
              event any Sponsor withdraws prior to the publication of the first
              final version of the Specification, the covenants of such
              withdrawn Sponsor to grant licenses are extinguished and of no
              effect.

       6.2.2  A withdrawing Sponsor must identify in its notice of withdrawal,
              with reasonable specificity, any technical Contribution it has
              made with regard to any as yet unadopted revision or proposed
              update to the Specification being considered at the time of
              withdrawal or to any Specification adopted within thirty (30) days
              of such notice if such withdrawal is being done under Section
              4.3.1. Any technical

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              Contribution not noticed will be licensed under Section 2.1.
              Additionally, the copyrights in any materials contributed by such
              Sponsor as of the time of withdrawal shall still be subject to the
              provisions of Section 3.1 above.

       6.2.3  The obligations of a withdrawn Sponsor to license Necessary Claims
              as set forth in Section 2 of this Agreement shall continue as to a
              new Specification or revision if such new Specification or
              revision: (i) defines a network which is backwards compatible to a
              prior Specification for which the Sponsor is obligated to grant
              licenses, and (ii) uses a Necessary Claim in a substantially
              similar manner and to a substantially similar extent as the
              Necessary Claim was used in a prior Specification for which the
              Sponsor is obligated to grant licenses. In no event is a withdrawn
              Sponsor obligated to license any additional Necessary Claims under
              this subsection.

7.     General

7.1    No Other Licenses. Except for the rights expressly provided by this
Agreement, no Sponsor grants or receives, by implication, or estoppel, or
otherwise, any rights under any patents or other intellectual property rights.

7.2    Limited Effect. This Agreement shall not be construed to waive any
Sponsor's rights under law or any other agreement except as expressly set out
here.

7.3    No Warranty. Sponsor acknowledges that the Specification is provided "AS
IS" WITH NO WARRANTIES WHATSOEVER, WHETHER EXPRESS, IMPLIED OR STATUTORY,
INCLUDING, BUT NOT LIMITED TO ANY WARRANTY OF MERCHANTABILITY, NONINFRINGEMENT,
FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY
PROPOSAL, SPECIFICATION, OR SAMPLE.

Notwithstanding the above, each Sponsor warrants that the Sponsor has not
contributed any third party confidential information to the Specification and
that it has the authority to enter into this Agreement.

7.4    Damages. In no event will Sponsors be liable to any Fellow Adopter for
any loss of profits, loss of use, incidental, consequential, indirect, or
special damages arising out of this Agreement or any Adopter or Participant
agreements related hereto, whether or not such party had advance notice of the
possibility of such damages.

7.5    Notices. Shall be sent to:

Lubos Parobek
3Com Corporation
5400 Bayfront Plaza
PO Box 58145 M/S 14105
Santa Clara, CA 95052-8145

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Cyrus Namazi
Advanced Micro Devices, Inc
1 AMD Place, MS 17
Sunnyvale, CA 94088-3454

Phil Hunt
Cisco Systems, Inc.
250 Apollo Drive
Chelmsford, MA 01824

Rich Kennedy
Compaq Computer Corporation
MS060701
PO Box 692000
Houston, TX 77070-2698

Attn: Contracts Manager
Conexant Systems, Inc.
4311 Jamboree Road
Newport Beach, CA 92660

Bob Dillon
Enikia Incorporated
200 Centennial Avenue Suite 205
Piscataway, NJ 08854

Post Contracts Management
Intel Corporation
JF3-149
2111 N.E. 25th Avenue
Hillsboro, OR 97124 USA

Eric Buffkin
Intellon Corporation
5100 West Silver Springs Blvd.
Ocala, FL 34482

Vincent Izzo
Motorola Broadband Communications Sector
101 Tournament Drive
Horsham, PA 19044

Jim Cady: President, Communications Division
S3 Incorporated
312 SE Stonemill Drive, Suite 150
Vancouver, WA 98684

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David Martella
Tandy Corporation
100 Throckmorton Street
Fort Worth, TX 76102

Ryan Middleton
Texas Instruments Incorporated
M/S 8725
12500 TI Boulevard
Dallas, TX 75243

7.6    Governing Law. This Agreement shall be construed and controlled by the
substantive laws of California without reference to conflict of laws principles.
Any litigation arising out of this Agreement shall take place in California, and
all parties irrevocably consent to jurisdiction of the state and Federal courts
there.

7.7    Not Partners. The Sponsors are independent companies and are not partners
or joint venturers with each other. While the Sponsors may select an entity to
handle certain administrative tasks for them, no party is authorized to make any
commitment on behalf of all or any of them.

7.8    Complete Agreement. This Agreement sets forth the entire understanding of
the parties and supersedes all prior agreements and understandings relating
hereto. No modifications or additions to or deletions from this Agreement shall
be binding unless accepted in writing by an authorized representative of all
parties.

7.9    Termination: This agreement continues for each Sponsor until terminated
with respect to such Sponsor upon events such as withdrawal or default.

7.10.  Publicity: No Sponsor may make any statement on behalf of the Alliance
without the prior approval of the Sponsors.

7.11.  Execution in Counterparts. This Agreement may be executed in any number
of counterparts, each of which when so executed and timely delivered shall be
deemed an original, and such counterparts together shall constitute one
instrument.

7.12   Assignment. No party may assign any of its rights, duties or obligations
under this agreement in whole or in part without a 2/3 vote of the other
Sponsors.

7.13   Severability. If any provision of this Agreement becomes or shall be held
by a court of competent jurisdiction to be contrary to any law, such provision
shall be stricken and the remaining provisions shall remain in full force and
effect so long as the remaining Agreement still represents the intent of the
parties.

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In witness of their agreement, the Sponsors have executed this Agreement below:

<TABLE>
<CAPTION>
3COM CORPORATION                               ADVANCED MICRO DEVICES, INC.                CISCO SYSTEMS, INC.
<S>                                            <C>                                         <C>
By:                                            By:                                         By:
          --------------------------------             -------------------------------               -------------------------------

Name:                                          Name:                                       Name:
          --------------------------------             -------------------------------               -------------------------------

Title:                                         Title:                                      Title:
          --------------------------------             -------------------------------               -------------------------------

Date:                                          Date:                                       Date:
          -------------------------------              -------------------------------               -------------------------------
</TABLE>

<TABLE>
<CAPTION>
COMPAQ COMPUTER CORPORATION                    CONEXANT SYSTEMS, INC.                      ENIKIA, INC.
<S>                                            <C>                                         <C>
By:                                            By:                                         By:
          --------------------------------             -------------------------------               -------------------------------

Name:                                          Name:                                       Name:
          --------------------------------             -------------------------------               -------------------------------

Title:                                         Title:                                      Title:
          --------------------------------             -------------------------------               -------------------------------

Date:                                          Date:                                       Date:
          -------------------------------              -------------------------------               -------------------------------
</TABLE>

<TABLE>
<CAPTION>
INTEL CORPORATION                              INTELLON CORPORATION                        MOTOROLA CORPORATION
<S>                                            <C>                                         <C>
By:                                            By:                                         By:
          --------------------------------             -------------------------------               -------------------------------

Name:                                          Name:                                       Name:
          --------------------------------             -------------------------------               -------------------------------

Title:                                         Title:                                      Title:
          --------------------------------             -------------------------------               -------------------------------

Date:                                          Date:                                       Date:
          -------------------------------              -------------------------------               -------------------------------
</TABLE>

<TABLE>
<CAPTION>
S3 INCORPORATED                                TANDY CORPORATION                           TEXAS INSTRUMENTS
<S>                                            <C>                                         <C>
By:                                            By:                                         By:
          --------------------------------             -------------------------------            -------------------------------

Name:                                          Name:                                       Name:
          --------------------------------             -------------------------------            -------------------------------

Title:                                         Title:                                      Title:
          --------------------------------             -------------------------------            -------------------------------

Date:                                          Date:                                       Date:
          -------------------------------              -------------------------------            -------------------------------
</TABLE>

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                 HOMEPLUG POWERLINE ALLIANCE SPONSORS' AGREEMENT

                                  Attachment C

                    ORAL CONFIDENTIAL INFORMATION MEMORANDUM

Date:

To:

The HomePlug Powerline Alliance Networking Sponsor's Agreement ("Agreement")
"provides that Confidential Information disclosed orally (or that by its nature
can not be marked) becomes subject to the Agreement's confidentiality provisions
if it is treated as confidential at the time of disclosure, and is designated as
confidential in a written memorandum ... sent to recipient's representative
within thirty (30) days of disclosure, summarizing the Confidential Information
sufficiently for identification."

By completing and signing this form, the undersigned gives the recipient notice
that the information disclosed on the following date is considered Confidential
Information under the Agreement and shall be kept confidential by the recipient
according to its terms.

Date of Disclosure of Confidential Information:
                                               ---------------------------------

Location:
         -----------------------------------------------------------------------

Description of Confidential Information disclosed:

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

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

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

All other terms and conditions of the Agreement shall remain in full force and
effect. Nothing contained herein shall be construed as amending or modifying the
terms of the Agreement.

From:

------------------------------------------
(Sponsor's Name)

Represented by:

------------------------------------------
(Signature)

------------------------------------------
(Printed Name)

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(Title)<PAGE>   1
                                                                  Exhibit 10.1

Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                       COLLABORATION AND LICENSE AGREEMENT

         This Collaboration and License Agreement ("Agreement") is made
effective as of September 29, 2000 ("Effective Date") by and between IMMUNOGEN,
a Massachusetts corporation with its principal place of business at 128 Sidney
Street, Cambridge, Massachusetts 02139 ("IMMUNOGEN"), and MORPHOSYS AG, a German
limited liability company with its principal place of business at Lena Christ
Strasse 48, 82152 Martinsried, Munich, Germany ("MORPHOSYS"). MORPHOSYS and
IMMUNOGEN are each hereafter referred to individually as a "Party" and together
as the "Parties".

         WHEREAS, IMMUNOGEN and MORPHOSYS desire to collaborate in the discovery
and development of human monoclonal antibodies against certain specified
IMMUNOGEN Targets, whereby MORPHOSYS will use its MORPHOSYS HuCAL Technologies
to generate and characterize antibodies and optimize those antibodies and
IMMUNOGEN and MORPHOSYS will use their expertise in developing antibodies in
pre-clinical and clinical settings;

         WHEREAS, the Parties desire to grant and receive licenses to
discoveries made utilizing the MORPHOSYS HuCAL Technologies on the terms set
forth herein; and

         WHEREAS, IMMUNOGEN and MORPHOSYS desire to initiate the performance of
the above-described activities by MORPHOSYS and IMMUNOGEN and therefore agree to
undertake the foregoing, all under the terms and conditions set forth in this
Agreement.

         NOW, THEREFORE, in consideration of the mutual covenants contained
herein, and for other good and valuable consideration, the receipt and adequacy
of which is hereby acknowledged, the Parties hereby agree as follows:

                                 1. DEFINITIONS

         Whenever used in the Agreement with an initial capital letter, the
terms defined in this Section 1 shall have the meanings specified below.

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Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

         1.1 "AFFILIATE" shall mean any corporation, firm, limited liability
company, partnership or other entity which directly or indirectly controls or is
controlled by or is under common control with a Party to this Agreement.
"Control" means ownership, directly or through one or more Affiliates, of more
than fifty percent (50%) of the shares of stock entitled to vote for the
election of directors, in the case of a corporation, more than fifty percent
(50%) of the equity interests in the case of any other type of legal entity,
status as a general partner in any partnership, or any other arrangement whereby
a Party controls or has the right to control the Board of Directors or
equivalent governing body of a corporation or other entity.

         1.2 "AGREEMENT YEAR" shall mean an annual period commencing on January
1 and ending on December 31, except for the first Agreement Year which shall
commence on the Effective Date and end on December 31, 2000.

         1.3 "ANTIBODY OPTIMIZATION" shall mean the modification of the variable
region of an antibody in order to achieve higher affinity and/or improved
specificity, including the replacement or modification of CDRs of the antibody.

         1.4 "ANTIBODY PRODUCT" shall mean a product or composition containing
an antibody discovered or developed by either Party in the course of performance
of the Collaboration Plan through use of the MORPHOSYS HuCAL Technologies, or
through use of any Deliverable or fragments or variants of any such antibody,
alone or in combination with other materials.

         1.5 "COLLABORATION DATA" shall mean any data generated by either Party
(as applicable) in the course of performance of the Collaboration Plan or
through use of MORPHOSYS HuCAL Technologies, Antibody Products, Collaboration
Materials or a Collaboration Invention during the Term of this Agreement.
Collaboration Data shall not include Clinical Data.

         1.6 "COLLABORATION INVENTION" shall mean any discovery, invention,
know-how or trade secret conceived or made by either Party (as applicable) in
the course of performance of the Collaboration Plan or through use of MORPHOSYS
HuCAL Technologies, Antibody Products, Collaboration Data or Collaboration
Materials during the Term of this Agreement.

                                                                    Page 2 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

         1.7 "COLLABORATION MATERIAL" shall mean any proprietary materials,
including but not limited to antibodies and antibody fragments and certain other
Deliverables, identified or developed by either Party (as applicable) in the
performance of the Collaboration Plan through the use of MORPHOSYS HuCAL
Technologies.

         1.8 "COLLABORATION PLAN" shall mean the written description of the
research and development efforts and activities to be performed by MORPHOSYS and
IMMUNOGEN under this Agreement, as further described in Section 2.1.3 and in
Appendix 1.8. The Collaboration Plan may specify one or more independent
projects.

         1.9 "COLLABORATION PROGRAM" shall have the meaning as indicated in
Section 2.1. All work performed in the Collaboration Program shall be as
described in the Collaboration Plan.

         1.10  "COLLABORATION  TERM" shall have the meaning set forth in Section
2.3.1.

         1.11 "DELIVERABLES" shall mean information and materials, including but
not limited to Antibody Products, delivered to IMMUNOGEN by MORPHOSYS hereunder,
as further set forth in Section 2.1.3.

         1.12 "FDA" shall mean the United  States  Food and Drug  Administration
and any successor agency or authority thereto.

         1.13 "FIELD" shall mean all therapeutic indications.

         1.14 "FTE" shall mean the equivalent of one researcher  involved in one
year of research on a full-time basis  comprising at least thirty-two (32) hours
per week of  scientific  effort  in  support  of the  Collaboration  Plan and as
furthermore outlined therein.

         1.15 "IMMUNOGEN PROPRIETARY MATERIAL" shall mean all proprietary
information and materials including but not limited to antigens, IMMUNOGEN
Targets, cells, ligands, monoclonal antibodies, and other biological materials,
provided by IMMUNOGEN to MORPHOSYS for the purposes of performing the
Collaboration Plan.

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Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

         1.16 "IMMUNOGEN TARGET" shall mean the Target designated in Appendix
1.16 as of the Effective Date and any additional Target subsequently designated
by mutual written agreement of the Parties.

         1.17 "IND" shall mean an investigational new drug application (as
defined in Title 21 of the United States Code of Federal Regulation, as amended
from time to time) filed or to be filed with the FDA with regard to any Licensed
Product.

         1.18  "JOINT  STEERING  COMMITTEE"  or "JSC" shall have the meaning set
forth in Section 2.2.

         1.19 "LICENSED PRODUCT" shall mean an Antibody Product which is the
subject of a license granted to IMMUNOGEN under Section 3.2 of this Agreement.

         1.20 "MORPHOSYS BACKGROUND INVENTIONS" shall mean all inventions,
discoveries, patent rights, trade secrets and/or know-how, including without
limitation, any patents or patent applications, claiming any such inventions or
discoveries, in each case owned or exclusively licensed by MORPHOSYS, including
but not limited to the MORPHOSYS HuCAL Technologies, which MORPHOSYS has the
right to license and which would be infringed by the activities of IMMUNOGEN
contemplated hereunder, but for this Agreement and whether existing now or
obtained in the future; provided, however, that MORPHOSYS Background Inventions
shall expressly exclude (a) any inventions, discoveries, patent rights, trade
secrets or know-how arising from MORPHOSYS internal pharmaceutical product
development activities, occurring prior to the Effective Date of this Agreement
or from any MORPHOSYS collaboration with a third party, except to the extent
expressly permitted thereby, (b) any Target Specific Rights owned or controlled
by MORPHOSYS. As used in this Section 1.20, the term "exclusively licensed" does
not include co-exclusive licenses.

         1.21 "MORPHOSYS HUCAL TECHNOLOGIES" shall mean the MORPHOSYS HuCAL
library and associated technologies described on Appendix 1.21 attached hereto.

         1.22 "NDA" shall mean a new drug application (as defined in Title 21 of
the United States Code of Federal Regulations, as amended from time to time)
filed with the FDA seeking

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Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

regulatory approval to market and sell any Licensed Product in the United States
for a particular indication within the Field.

         1.23 "NET SALES" shall mean the gross invoiced sales price of any
Licensed Product charged by IMMUNOGEN, its Affiliates or its Sublicensees for
the sale of a Licensed Product in arm's length sales to unrelated third parties,
less the following amounts incurred by IMMUNOGEN or its Affiliates or
Sublicensees with respect to such sale of Licensed Product to the extent
separately included in the invoice for the Licensed Product as part of the gross
invoiced sales price:

                  (a) reasonable and customary trade, cash and quantity
                  discounts or rebates actually allowed or taken;

                  (b) reasonable and customary credits or allowances given or
                  made for rejection of or return of, and for uncollectible
                  amounts on, previously sold Licensed Products or for
                  retroactive price reductions (including Medicare and similar
                  types of rebates);

                  (c) reasonable and customary charges for insurance, freight,
                  and other transportation costs directly related to the
                  delivery of Licensed Product;

                  (d) sales, transfer and other excise taxes levied on the sale
                  or delivery of a Licensed Product (including any tax such as a
                  value added or similar tax or government charge) borne by the
                  seller thereof, other than franchise or income tax of any kind
                  whatsoever.

         1.24 "PATENT RIGHTS" means the rights and interests in and to issued
patents and pending patent applications in any country, including, but not
limited to, all utility patent applications, provisional applications,
substitutions, continuations, continuations-in-part, divisions, and renewals,
all letters patent granted thereon, and all reissues, reexaminations and
extensions thereof, wherein at least one claim of such patent or patent
application is directly based, in whole or in part, on a Collaboration
Invention.

         1.25 "PHASE III CLINICAL TRIAL" shall mean, as to a particular Licensed
Product for a particular indication, a controlled and lawful study in humans of
the safety and efficacy of such

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Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

Licensed  Product  for such  indication,  which  is  prospectively  designed  to
demonstrate  statistically  whether such Licensed  Product is safe and effective
for use in such  indication in a manner  sufficient to file a biologics  license
application  (as  defined  in  Title 21 of the  United  States  Code of  Federal
Regulations,  as amended from time to time) or NDA to obtain regulatory approval
to market and sell that Licensed Product in the United States for the indication
under investigation in such study.

         1.26 "SUBLICENSEE" shall mean any non-Affiliate third party licensed or
sublicensed under the license granted to IMMUNOGEN hereunder by IMMUNOGEN to
make, have made, use, have used, offer to sell, sell, have sold, import or have
imported any Licensed Product.

         1.27 "SUCCESS CRITERIA" shall mean, for each IMMUNOGEN Target,
characteristics of the Antibody Product to be delivered by MORPHOSYS pursuant to
the Collaboration Plan, as specified and agreed in the Collaboration Plan.

         1.28 "TARGET" shall mean (i) a defined molecule such as a biological
receptor, an enzyme, or a macromolecule, (ii) an entity tentatively identified
through its reaction with a specific antibody or another reagent, or (iii) a
molecule which is encoded by a particular gene.

         1.29 "TARGET SPECIFIC RIGHTS" shall mean patent rights, trade secrets
or know-how arising from the application by MORPHOSYS or its third party
collaborators of MORPHOSYS HuCAL Technologies to any Target outside of the
Collaboration Plan.

         1.30     "TERM" shall have the meaning set forth in Section 8.1.

         1.31     "TERRITORY" shall mean the world.

         1.32 "THIRD PARTY LICENSEE" shall mean a third party to whom MORPHOSYS
has granted rights to use the MORPHOSYS HuCAL Technologies or rights with
respect to any Target.

         1.33 "THIRD PARTY PATENT RIGHTS" shall mean the rights and interests in
and to issued patents and pending patent applications in any country, as such
are licensed together with the

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Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

right to  sublicense  by  MORPHOSYS  from  third  parties,  and  which  would be
infringed by the use or  operation of the  MORPHOSYS  Background  Inventions  as
contemplated by this Agreement.

         1.34 "VALID CLAIM" shall mean (a) a claim of an issued and unexpired
patent which has not been held permanently revoked, unenforceable or invalid by
a decision of a court or other governmental agency of competent jurisdiction,
unappealable or unappealed within the time allowed for appeal, and which has not
been admitted to be invalid or unenforceable through reissue or disclaimer or
otherwise; or (b) a claim of a pending patent application which claim was filed
in good faith, has not been pending for more than [______________] and has not
been abandoned or finally rejected/disallowed without the possibility of appeal
or refiling of the application; however, if a claim pending for more than
[_________________] issues in a patent (satisfying the conditions of this
Section 1.34(a)) then [_______________] or [________ _________] that
[_________________] will become [_________________].

         1.35 "CLINICAL DATA" shall mean all information, data, documents and
results prepared by or on behalf of IMMUNOGEN without the assistance of
MORPHOSYS in connection with the performance of the pre-clinical and/or human
clinical testing of a Licensed Product necessary to obtain any approvals,
registrations or authorizations of any kind of the FDA or its foreign equivalent
applicable to the development of such Licensed Product.

         2.       COLLABORATION

         2.1      IMPLEMENTATION OF THE COLLABORATION PLAN.

         2.1.1 Basic Provisions. The objective of the collaboration hereunder
(the "Collaboration Program") will be for the Parties to jointly perform
research and development activities as outlined in the Collaboration Plan
utilizing the MORPHOSYS HuCAL Technologies and other resources, which shall
include without limitation efforts by MORPHOSYS to generate Collaboration
Materials and Collaboration Data using the MORPHOSYS HuCAL Technologies and the
delivery of such Collaboration Materials and Collaboration Data to IMMUNOGEN,
and the analysis and use by IMMUNOGEN of any such Collaboration Materials and
Collaboration Data for research as outlined in the Collaboration

                                                                    Page 7 of 57
Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

Plan,  in order to allow the Parties to  discover  and  validate  Targets and to
discover, identify, optimize and develop one or more human Antibody Products. In
carrying  out  the  Collaboration  Plan,  the  Parties  shall  use  commercially
reasonable  efforts to perform  such tasks as are set forth to be  performed  by
them, respectively,  in the Collaboration Plan to be agreed upon as set forth in
Section 2.1.3.

         2.1.2    Collaborative Efforts and Reports.

                  (a) The Parties agree that the successful execution of the
                  Collaboration Plan will require the collaborative use of both
                  Parties' areas of expertise. The Parties shall keep the JSC
                  fully informed about the status of the portions of the
                  Collaboration Plan they respectively perform. In particular,
                  without limitation, each Party shall furnish to the JSC
                  quarterly written reports within five (5) business days before
                  each quarterly JSC meeting, describing the progress of its
                  activities under the Collaboration Plan in reasonable detail.

                  (b) Researchers at MORPHOSYS and IMMUNOGEN shall cooperate in
                  the performance of the Collaboration Plan and, subject to any
                  confidentiality obligations to third parties and to the
                  provisions of Section 5, shall exchange information and
                  materials as necessary to carry out the Collaboration Program.
                  Each Party will attempt to accommodate any reasonable request
                  of the other Party to send or receive personnel for purposes
                  of collaborating or exchanging information under the
                  Collaboration Program. Such visits and/or access will have
                  defined purposes and be scheduled in advance.

         2.1.3 Collaboration Plan. The Collaboration Plan for the IMMUNOGEN
Targets to be pursued during the Collaboration Program shall be agreed upon by
the Parties prior to the Effective Date. The Collaboration Plan shall include
specifications for IMMUNOGEN Proprietary Material to be delivered to MORPHOSYS,
mutually agreed Success Criteria, and specifications for Deliverables for each
IMMUNOGEN Target, prior to the initiation of work on such IMMUNOGEN Target by
MORPHOSYS hereunder. The Collaboration Plan shall also specify (a) timelines for
the performance of work by each Party and (b) milestones and budgets

                                                                    Page 8 of 57
Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

for the  performance of work by MORPHOSYS  pursuant to the  Collaboration  Plan.
During the Collaboration  Term, or at any time on request of either IMMUNOGEN or
MORPHOSYS,  the  Collaboration  Plan shall be updated by MORPHOSYS and IMMUNOGEN
and shall be approved by the JSC.  Nothing in this Agreement  shall be construed
as an obligation of either Party to perform any additional work beyond the scope
of the approved Collaboration Plan.

         2.1.4    Permitted Activities.

                  (a) MORPHOSYS agrees that MORPHOSYS will not use and/or
                  replicate any IMMUNOGEN Proprietary Material for any purpose
                  other than as provided herein. During the Term of this
                  Agreement, MORPHOSYS will not collaborate with any other party
                  with respect to the development or commercialization of any
                  Licensed Products in the Field.

                  (b) IMMUNOGEN agrees that IMMUNOGEN will not utilize
                  Deliverables, Collaboration Material, Collaboration Inventions
                  or Patent Rights or the MORPHOSYS HuCAL Technologies other
                  than as expressly provided herein except to the extent
                  IMMUNOGEN has a joint ownership interest in any such item
                  which is not exclusively licensed to MORPHOSYS pursuant to
                  Section 3.7(a). Notwithstanding any other provision of this
                  Agreement, IMMUNOGEN shall in no event use or commercialize
                  any Antibody Product other than pursuant to a license
                  expressly granted herein and in no event shall IMMUNOGEN
                  engineer an Antibody Product so as to bind to a Target which
                  is not a IMMUNOGEN Target.

         2.2      JOINT STEERING COMMITTEE.

                  2.2.1 Establishment and Functions of JSC. The Joint Steering
Committee ("JSC") will be established by the Parties as provided below and will
be responsible for the planning and monitoring the activities of the Parties
under the Collaboration Program. In particular, the activities of the JSC shall
include:

                                                                    Page 9 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                  (a) Approving Collaboration Plans and establishing
                  prioritization criteria for specific components thereof,
                  including explicit determination of proposed dates for
                  experimental initiation and completion;

                  (b) Monitoring workflow, including experimental sample
                  transfer, sample analysis and data quality control, data
                  analysis and summarization, software installation (access),
                  training and maintenance;

                  (c) Monitoring of sample throughput, and overall Collaboration
                  progress;

                  (d) Ensuring timely filing of patent applications;

                  (e) Assigning tasks and responsibilities taking into account
                  each Party's respective specific capabilities and expertise in
                  order to avoid duplication and enhance efficiency and
                  synergies; and

                  (f) Monitoring  timely  execution of the  Collaboration  Plan,
                  including compliance with budgets and timelines.

                  2.2.2 JSC Membership. MORPHOSYS and IMMUNOGEN each shall
appoint, in their sole discretion, three (3) members to the JSC (one of which
shall be a Project Coordinator as discussed below), which shall include a
Co-Chair to be designated by IMMUNOGEN and a Co-Chair to be designated by
MORPHOSYS. Substitutes or alternates for the Co-Chairs or other JSC members may
be appointed at any time by notice in writing to the other Party, provided that
such replacement members shall have sufficient authority to ensure acceptance
and execution of JSC decisions within their organizations. The Parties may
mutually agree to change the size of the JSC as long as there shall be an equal
number of representatives of each Party on the JSC. The initial Co-Chairs and
other JSC members shall be designated by the Parties on or prior to the
Effective Date. Each Party shall also appoint one or more Project Coordinators,
each of whom shall have sufficient responsibility to serve as principal liaison
for the various Collaboration projects and to ensure successful implementation
of the Collaboration Plan. Such Project Coordinator(s) will report to the JSC at
or prior to each JSC meeting and each Party shall appoint one Project
Coordinator to serve as a member to the JSC.

                                                                   Page 10 of 57
Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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                  2.2.3 JSC Meetings. The JSC shall meet at least quarterly,
with such meetings to be held, alternately, in Munich, Germany and at
IMMUNOGEN's facilities in Cambridge, Massachusetts, unless the Parties agree
otherwise. Any additional meetings shall be held at places and on dates selected
by the Co-Chairs of the JSC. As agreed upon from time to time by the Parties,
any meetings of the JSC may be conducted through teleconferences and/or video
conferences. In addition, the JSC may act without a formal meeting by a written
memorandum signed by the Co-Chairs of the JSC. Whenever any action by the JSC is
called for hereunder during a time period in which the JSC is not scheduled to
meet, the Co-Chairs of the JSC shall cause the JSC to take the action in the
requested time period by calling a special meeting or by action without a
meeting. Subject to the obligations set forth in Article 5, representatives of
each Party or of its Affiliates, in addition to the members of the JSC, may
attend JSC meetings at the invitation of either Party with the prior approval of
the other Party, which approval shall not be unreasonably withheld.

                  2.2.4 Minutes of JSC Meetings. The JSC shall keep accurate
minutes of its deliberations which record all proposed decisions and all actions
recommended or taken. Drafts of minutes shall be delivered to the Co-Chairs of
the JSC within twenty (20) days after any meeting. The Party hosting the meeting
shall be responsible for the preparation and circulation of the draft minutes.
Draft minutes shall be edited by the Co-Chairs and shall be issued in final form
only with the approval and agreement of the Co-Chairs as evidenced by their
signatures on the minutes.

                  2.2.5 Quorum; Voting; Decisions. At each JSC meeting, at least
two (2) member(s) appointed by each Party present in person or by telephone
shall constitute a quorum and decisions shall be made by majority vote. Each JSC
member shall have one vote on all matters before the JSC, provided that the
member or members of each Party present at any JSC meeting shall have the
authority to cast the votes of any of such Party's members on the JSC who are
absent from the meeting. Notwithstanding the foregoing, the objective of the
Parties to this Agreement is that decisions of the JSC shall be made by
consensus. Any matter in dispute hereunder shall be resolved, if possible, by
the Chief Executive Officers of each Party using good faith efforts.

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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                  2.2.6 Expenses. MORPHOSYS and IMMUNOGEN shall each bear all
expenses of their respective JSC members related to their participation on the
JSC and attendance at JSC meetings.

         2.3      TERM OF COLLABORATION.

                  2.3.1 Term of the Collaboration Program. The Collaboration
Program shall terminate on the earlier of (i) the date on which the JSC agrees
in writing that the Success Criteria have been met for an Antibody Product
directed towards each IMMUNOGEN Target, (ii) the date on which MORPHOSYS has
completed all activities or tasks under the Collaboration Plan required of
MORPHOSYS, or (iii) the end date on the time line set forth in the Collaboration
Plan, unless extended as provided below or unless this Agreement is earlier
terminated by either Party pursuant to the provisions of Article 8 (the
"Collaboration Term"). In no event shall MORPHOSYS have any obligation to
perform any activities with respect to the development or optimization of
Antibody Products after such date, except as specified in Section 2.3.2 or
Section 4.2 hereof.

                  2.3.2 Extension of the Collaboration Program. The
Collaboration Program and the Collaboration Term may be extended for additional
time periods to meet the development goals or milestones set forth in the
Collaboration Plan upon the mutual written agreement of the Parties with terms
of any such extension to be mutually agreed upon in writing by the Parties.

                  2.4 EXCLUSIVE USE OF COLLABORATION MATERIAL AND DATA. During
the Collaboration Term, MORPHOSYS:

                  (a) shall have the right but not the obligation to utilize
                  Collaboration Material, Collaboration Data and Collaboration
                  Inventions to develop Antibody Products that are not Licensed
                  Products , but

                  (b) shall keep such Collaboration Data, Collaboration Material
                  and Collaboration Inventions confidential in accordance with
                  the provisions of Section 5.1 hereof and will not disclose or
                  transfer such Collaboration Data, Collaboration Material or
                  Collaboration Inventions without the prior written

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Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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                  consent of IMMUNOGEN. Notwithstanding the foregoing, IMMUNOGEN
                  agrees to negotiate in good faith an agreement on commercially
                  reasonable terms regarding the development and
                  commercialization of Antibody Products consisting of or
                  derived from any such Collaboration Material for uses outside
                  the Field (or inside the Field for Antibody Products that are
                  not Licensed Products) upon written request of MORPHOSYS.
                  Nothing in this Section 2.4 shall limit any rights expressly
                  granted to either Party in Article 3 hereof, which survive any
                  such termination.

         2.5 OTHER COLLABORATIONS. MORPHOSYS and IMMUNOGEN hereby acknowledge
that, unless otherwise provided herein, MORPHOSYS may grant exclusive rights to
utilize the MORPHOSYS HuCAL Technologies with respect to the development and
commercialization of products (i) within or outside the Field directed to any
Target which is not an IMMUNOGEN Target, and (ii) for commercial applications
outside the Field directed to any Target, to any other party at any time and
that, unless otherwise provided herein, MORPHOSYS shall have the right, alone or
in conjunction with a third party, to utilize the MORPHOSYS HuCAL Technologies
with respect to any such Target for any such purpose, or to grant licenses to
third parties with respect thereto. Nothing contained in this Agreement shall in
any way restrict MORPHOSYS' right to perform research or collaborate with third
parties and to grant to third parties the right to exploit the results of any
such research or collaborations without restriction other than as expressly
provided in Sections 2.1.4 and 2.4, or in Article 3.

                               3. GRANT OF RIGHTS

3.1 RESEARCH LICENSE TO IMMUNOGEN. Subject to the provisions of Article 8,
MORPHOSYS hereby grants to IMMUNOGEN a non-exclusive research license under
MORPHOSYS Background Inventions and MORPHOSYS' rights in Collaboration Data,
Collaboration Materials and Collaboration Inventions, solely during the
Collaboration Term and as further described below, to the extent necessary to
allow IMMUNOGEN to utilize Collaboration Materials, Collaboration Data and
Collaboration Inventions to perform its obligations under the Collaboration
Plan. Such license (i) shall be personal to IMMUNOGEN

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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and non-sublicensable without the prior written consent of MORPHOSYS, (ii) shall
not include the right to utilize any MORPHOSYS HuCAL Technologies, (iii) shall
not include the right to perform antibody development, screening, engineering or
optimization with respect to any Target which is not an IMMUNOGEN Target, (iv)
shall not include the right to have on-site access to the MORPHOSYS HuCAL
Technologies, and (v) shall not include the right to develop or commercialize
any products other than as set forth in Sections 3.2 hereof. Such license
includes a sublicense of certain rights licensed to MORPHOSYS
[_____________________ ___________________________], and [____] (the sublicense
of [____] rights shall be granted by [____]), which are listed in Appendix 3.2
and may require affirmation through separate instruments to be executed by
IMMUNOGEN in order to become effective.

         3.2. COMMERCIAL LICENSE TO IMMUNOGEN. For each IMMUNOGEN Target listed
in Appendix 1.16, MORPHOSYS hereby grants to IMMUNOGEN an exclusive, worldwide
license to make, have made, use, have used, sell, have sold, offer for sale,
import and have imported Licensed Products for use in the Field directed to such
IMMUNOGEN Target under MORPHOSYS Background Inventions, and under MORPHOSYS'
rights in all Patent Rights and Collaboration Inventions and Collaboration
Material pertaining to such IMMUNOGEN Target and Licensed Products, or the uses
thereof in the Field. Such license shall be perpetual unless terminated as set
forth herein. Such license includes a sublicense of certain rights licensed to
MORPHOSYS from [_______________________________________], and [_____] (the
sublicense of [_____] rights shall be granted by [_____]), which are listed in
Appendix 3.2, and may require affirmation through separate instruments to be
executed by IMMUNOGEN in order to become effective.

         3.3      DUE DILIGENCE.

         (a) IMMUNOGEN will exercise commercially reasonable efforts and
diligence in developing and commercializing Licensed Products in accordance with
its business, legal, medical and scientific judgment, and in taking
investigations and actions required to obtain appropriate regulatory approvals
necessary to market Licensed Products in the Field, such reasonable efforts and
diligence to be in accordance with the efforts and resources that a similar

                                                                   Page 14 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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company would use for a compound owned by it or to which it has rights, which is
of similar market potential at a similar stage in development as the applicable
Licensed Product, taking into account the competitiveness of the marketplace,
the proprietary position of the Licensed Product, the relative potential safety
and efficacy of the Licensed Product, the regulatory requirements involved in
its development, commercialization and regulatory approval, the cost of goods
and availability of capacity to manufacture and supply the Licensed Product at
commercial scale, the profitability of the applicable Licensed Product, and
other relevant factors including, without limitation, technical, legal,
scientific, or medical factors. In the event that IMMUNOGEN materially breaches
its obligation to use due diligence as required hereunder, then on a Licensed
Product-by-Licensed Product basis as to the Licensed Product for which IMMUNOGEN
has materially breached its obligation to use due diligence as required
hereunder, MORPHOSYS exclusive remedy shall be, in its sole discretion, (i) to
terminate the license granted under Section 3.2 of this Agreement for breach
under Section 8.2(a) below (including the notice and cure provisions therein) or
(ii) to convert the licenses granted under Section 3.2 of this Agreement from
exclusive licenses to non-exclusive licenses, in either case only as such
licenses apply to such Licensed Product, which termination or conversion, as the
case may be, shall be effective upon expiration of the cure period specified in
Section 8.2(a) below provided that such failure remains uncured upon such
expiration.

         (b) IMMUNOGEN shall submit to MORPHOSYS, within [________________]
after delivery to IMMUNOGEN of a Licensed Product, a development schedule
outlining its intended marketing activities in connection with such Licensed
Product. IMMUNOGEN shall use reasonable commercial efforts to perform the
marketing activities for each Licensed Product in accordance with each such
development schedule; provided, that, it shall not be deemed to be a material
breach of this Agreement if IMMUNOGEN should fail to meet any timelines set
forth in such proposed schedule.

         3.4 SUBLICENSES. IMMUNOGEN shall have the right to grant licenses or
sublicenses to all or any portion of its rights under any license granted
pursuant to Section 3.2 to any Affiliate or Sublicensee for the purposes of
making, having made, using, having used, offering to sell, selling, having sold,
importing or having imported any relevant Licensed Product; provided,

                                                                   Page 15 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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however, that IMMUNOGEN shall remain obligated to ensure payment of royalty and
milestone obligations as set forth in Article 4 and that no right to use the
MORPHOSYS HuCAL Technologies may be granted, and no access to the MORPHOSYS
HuCAL Technologies may be provided, by IMMUNOGEN to any third party.

         3.5 [_________________] If, during the Term of this Agreement, a [__
_____________] to [_______________] that [_____________] in [______________] to
[________________________________] in a [_________________] which
[_____________________] shall [_________________] of [_________________]. On or
before [_________________] from the [_________________] agrees to either (a)
[__________________ ______________] as a [_________________] and
[__________________________] with [__________] regarding the [________] of a
[________] from [____________] to [____________________________________] in
[_________________] or (b) [_______________________] as a [_________________]
and [_________________] of [___________________________].

         3.6 ANTIBODY OPTIMIZATION. Notwithstanding the licenses granted in
Section 3.1 and 3.2, it is the intention of the Parties that Antibody
Optimization relating to Deliverables shall be performed by MORPHOSYS. MORPHYSYS
shall provide IMMUNOGEN, on or before the Effective Date, with a good faith
estimate of the aggregate costs it expects to incur to perform Antibody
Optimization activities, which estimate shall be attached as Appendix 3.6
hereto.

         3.7 [_________________][____________] hereby [____________________], a
[_______________________________] with [_________________], under [________
_________], if any, in [________________________________________________________
________] thereon

                  (a) to [_________________] the
                  [_____________________________], which [_________________],
                  and

                  (b) to [____________________________________________________
                  ___________________] the [_________________], other than
                  [_____

                                                                   Page 16 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   17

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                  ____________] as are [____________] to [_________________]
                  hereunder, which [_______________] shall be [_______________].

         3.8 NO OTHER RIGHTS. IMMUNOGEN shall receive no rights to Collaboration
Data or Collaboration Material under MORPHOSYS Background Inventions or under
MORPHOSYS' rights in Patent Rights or Collaboration Inventions or rights with
respect to use of MORPHOSYS HuCAL Technologies except as expressly set forth
herein. Nothing in this Agreement shall be deemed to require MORPHOSYS to
provide IMMUNOGEN with on-site access to the MORPHOSYS HuCAL Technologies.
MORPHOSYS shall receive no rights under IMMUNOGEN's ownership interest in any
Collaboration Data, Collaboration Inventions or Patent Rights or under IMMUNOGEN
Proprietary Material or any other proprietary right of IMMUNOGEN except as
expressly set forth herein.

                               4. FINANCIAL TERMS

         4.1 INITIATION FEE. IMMUNOGEN agrees to pay to MORPHOSYS a
collaboration initiation and license fee of
[_________________________________________________] for each IMMUNOGEN Target
upon execution of this Agreement.

         4.2 RESEARCH FUNDING.

                  (a) In partial consideration of the developmental work to be
                  done by MORPHOSYS pursuant to this Agreement and the
                  Collaboration Plan, IMMUNOGEN will pay MORPHOSYS
                  non-refundable research payments of
                  [________________________________________] per year per
                  MORPHOSYS FTE utilized in the course of performing the
                  Collaboration Plan. Such payments will be made quarterly in
                  advance, within 30 days of receipt by IMMUNOGEN of an itemized
                  invoice. IMMUNOGEN will fund all of its own activities under
                  the Collaboration Program, and all activities required
                  pursuant to Section 3.2 and 3.3. IMMUNOGEN agrees to increase
                  the annual research budget and funding under the Collaboration
                  Plan if the Collaboration Program is extended by mutual
                  decision of the Parties as set forth in Section 2.3.2. For the
                  second and the

                                                                   Page 17 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   18
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                  following years of this Agreement, the FTE cost shall be
                  adjusted based on the aggregate appreciation of the consumer
                  price index for Munich, for all urban consumers as published
                  by the relevant German bureau of Labor Statistics from the
                  Effective Date of this Agreement and any anniversary thereof.

                  (b) In partial consideration of the work to be done by
                  MORPHOSYS pursuant to this Agreement, IMMUNOGEN will pay
                  MORPHOSYS non-refundable research payments of
                  [____________________________________________] year per
                  MORPHOSYS FTE for any FTEs performing Antibody Optimization on
                  Deliverables, as approved by the JSC prior to the expiration
                  of the Collaboration Term. Such payments will be made monthly
                  in advance, within 30 days of receipt by IMMUNOGEN of an
                  itemized invoice.

         4.3 TRANSFER FEE.

         IMMUNOGEN agrees to pay MORPHOSYS [______________________________]
within thirty (30) days of the first transfer of an Antibody Product derived
from the MorphoSys HuCAL Technologies relating to the IMMUNOGEN Target.

         4.4 MILESTONE PAYMENTS. IMMUNOGEN shall make the following milestone
payments to MORPHOSYS for each IMMUNOGEN Target and/or Licensed Product:

                  (a) [____________________________________] for [____

                  ______________________________________________________________

                  ______________________________________________________________

                  ____________________________________________________________];

                  (b) [____________________________________] for [____

                  ______________________________________________________________

                  ______________________________________________________________

                  ____________________________________________________________];

                                                                   Page 18 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                  (c)      [____________________________________] for [____
                  ______________________________________________________________

                  ______________________________________________________________

                  ______________________________________];

                  (d)      [____________________________________] for [____
                  ______________________________________________________________

                  ______________________________________________________________

                  _______________________________________];

                  (e)      [____________________________________] for [____

                  ______________________________________________________________

                  ________________________________________] for [______________

                  ___________________________________________];and

                  (f)  [____________________________________] for [_________

                  ___________________________________________________________

                  ______________________________________________________________

                  __________________] for[______________________________________

                  [__________________________________________];  and

                   (g)     [____________________________________] for [____

                  ______________________________________________________________

                  ______________________________________________________

                   _____________________________________].

         It is hereby acknowledged and agreed that any milestone payment made
[__________________] for the same indication shall be made only once, with
respect to the first achievement of such milestone for the same indication for
the first Licensed Product, regardless

                                                                   Page 19 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   20

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of how many times such milestone is achieved for the same indication by Licensed
Products and regardless of how many times a particular Licensed Product achieves
such milestone for the same indication.

         4.5 ROYALTIES ON LICENSED PRODUCTS.

         IMMUNOGEN shall pay to MORPHOSYS a royalty on Net Sales of Licensed
Products sold by IMMUNOGEN or its Affiliates or Sublicensees for prophylactic or
therapeutic use as follows:

                           [__________________________________]

                           [__________________________________]

                           [__________________________________]

         4.6 THIRD PARTY PAYMENTS. MORPHOSYS will be responsible for license
fees and milestone and royalty payments owed to the following third parties for
licenses under Third Party Patent Rights:
[_____________________________________________]. In the event that IMMUNOGEN is
required to pay license fees, milestone fees and/or royalties to any other third
party in order to have freedom to practice the MORPHOSYS Background Inventions
or commercialize a Licensed Product in accordance with this Agreement, IMMUNOGEN
shall pay all relevant payments due under any such license; provided, however,
that ImmunoGen may [_________________] the
[____________________________________________________________] of
[__________________________________] relating to [_________________] of the
[_________________________________] , but in no event shall
[___________________________________________________].

         4.7 ONE ROYALTY. Only one royalty, calculated at the highest applicable
royalty rate hereunder, shall be payable to MORPHOSYS for each sale of a
Licensed Product.

         4.8 PAYMENT TERMS.

                                                                   Page 20 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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                  (a) Royalty payments shall be made to MORPHOSYS
                  [__________________] following the end of [_________________]
                  for which royalties are due. Each royalty payment shall be
                  accompanied by a report summarizing the total gross sales of
                  Licensed Products, credits allowed pursuant to Section 1.20,
                  and total Net Sales for each Licensed Product during the
                  relevant [_______________] and the calculation of royalties,
                  if any, due thereon pursuant to this Article 4.

                  (b) All royalties shall be payable in full in Germany in US
                  Dollars, regardless of the countries in which sales are made.
                  For the purpose of computing Net Sales for Licensed Products
                  sold in a currency other than US Dollars, such currency shall
                  be converted into US Dollars at the exchange rate for buying
                  US Dollars set forth in The Wall Street Journal for the last
                  business day of the [__________]. Such payments shall be
                  without deduction of exchange, collection or other charges.

         4.9 ROYALTY TERM. IMMUNOGEN recognizes and acknowledges that each of
the following, separately and together, may have substantial economic benefit to
IMMUNOGEN:

                  (a) MORPHOSYS' expertise and know-how concerning the discovery
                  and optimization of Antibody Products;

                  (b) the performance by MORPHOSYS of the Collaboration Plan on
                  the terms specified herein;

                  (c) the disclosure to IMMUNOGEN of results obtained in the
                  performance of the Collaboration Plan by MORPHOSYS;

                  (d) the licenses and rights granted to IMMUNOGEN hereunder
                  with respect to Collaboration Inventions, Collaboration Data,
                  Collaboration Materials and Antibody Products, which are not
                  within the claims of any letters patent owned or controlled by
                  MORPHOSYS;

                                                                   Page 21 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   22

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                  (e) the licenses granted to IMMUNOGEN under letters patent
                  owned or controlled by MORPHOSYS;

                  (f) the foundation afforded to IMMUNOGEN for its internal
                  program of research, development, manufacturing and marketing
                  of Antibody Products by each of the elements set forth in
                  subparagraphs (i) through (iv) above;

                  (g) the "head start" afforded to IMMUNOGEN whether or not any
                  patents issue with respect to any Collaboration Inventions and
                  whether or not any or all unpatented Collaboration Data,
                  Collaboration Materials, Collaboration Inventions and Antibody
                  Products become a part of the public domain, by each of the
                  elements set forth in subparagraphs (i) though (vi) above;

and in consideration of each, separately and together, and in consideration of
the fact that MORPHOSYS is relying upon IMMUNOGEN to market and sell Licensed
Products, IMMUNOGEN agrees to pay to MORPHOSYS earned royalties as specified in
Section 4.5 with respect to Net Sales by IMMUNOGEN, its Affiliates, and
Sublicensees of Licensed Products in each country until [_________] (i) the
[______________________________________________________________________________
of a [_______________________________] a [__________] of a [_________________]
or (ii) [_________________] of the [___________________] of a [______________
__________]. Following such royalty term, IMMUNOGEN shall have a fully paid-up,
irrevocable, freely transferable and sublicensable license in such country under
MORPHOSYS' rights in all Patent Rights, Collaboration Inventions, Collaboration
Materials and MORPHOSYS Background Inventions, to research, develop, make, have
made, use, have used, sell, offer for sale, have sold, import and have imported
Licensed Products for any and all uses within the Field in such country.

         4.10 OVERDUE ROYALTIES. Royalties not paid within the time period set
forth in this Article 4 shall bear interest at a rate of one and one-half
percent (1.5%) per month from the due date until the date paid in full.

                                                                   Page 22 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   23

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         4.11 RECORDS RETENTION. AUDITS. IMMUNOGEN, its Affiliates and
Sublicensees shall keep for [____________] from the date of each payment of
royalties complete and accurate records of sales by IMMUNOGEN and its Affiliates
and Sublicensees of each Licensed Product in sufficient detail to allow the
accruing royalties to be determined accurately. MORPHOSYS shall have the right
for a period of [_____________] after receiving any report or statement with
respect to royalties due and payable to appoint an independent certified public
accountant reasonably acceptable to IMMUNOGEN to inspect the relevant records of
IMMUNOGEN and its Affiliates and Sublicensees to verify such report or
statement. IMMUNOGEN and its Affiliates and Sublicensees shall each make its
records available for inspection by such independent certified public accountant
during regular business hours at such place or places where such records are
customarily kept, upon reasonable notice from MORPHOSYS, solely to verify the
accuracy of the reports and payments. Such inspection right shall not be
exercised more than once in any calendar year nor more than once with respect to
sales of any Licensed Product in any given payment period. MORPHOSYS agrees to
hold in strict confidence all information concerning royalty payments and
reports, and all information learned in the course of any audit or inspection,
except to the extent necessary for MORPHOSYS to reveal such information in order
to enforce its rights under this Agreement or if disclosure is required by law,
regulation or judicial order. The results of each inspection, if any, shall be
binding on both Parties. MORPHOSYS shall pay for such inspections, except that
in the event there is any upward adjustment in aggregate royalties payable for
any year shown by such inspection of more than [____________] of the amount
paid, IMMUNOGEN shall pay for such inspection.

                    5. TREATMENT OF CONFIDENTIAL INFORMATION

         5.1 CONFIDENTIAL INFORMATION. During the Term of this Agreement, each
Party may disclose to the other Party proprietary information, materials and
technical and business information, including but not limited to MORPHOSYS
Background Technologies and Collaboration Material (which information shall be
deemed Confidential Information of MORPHOSYS) and Collaboration Inventions
(collectively, "Confidential Information"). During the Term (with respect to all
Collaboration Inventions) and ten (10) years after the end of the Collaboration
Term (with respect to all other Confidential Information), except as expressly

                                                                   Page 23 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   24
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

permitted hereunder, the receiving Party shall keep confidential all such
Confidential Information of the other Party and will not disclose such
Confidential Information of the other Party to third parties by publication or
otherwise. Each Party further agrees not to use Confidential Information of the
other Party for any purpose other than conducting research hereunder or
exercising any rights granted to it or reserved by it hereunder. Upon any
termination or expiration of this Agreement, upon request, a Party shall return
to the requesting Party all copies of any of such requesting Party's
Confidential Information which is not the subject of a surviving license or
right hereunder. Notwithstanding the foregoing, it is understood and agreed that
the receiving Party's obligations of confidentiality and nonuse herein shall not
apply to any information which:

                  (a) is, at the time of disclosure by the disclosing Party
                  hereunder, or thereafter becomes, a part of the public domain
                  or publicly known or available through no fault or negligence
                  of the receiving Party or any of its Affiliates or
                  Sublicensees; or

                  (b) was otherwise in the receiving Party's lawful possession
                  prior to disclosure by the disclosing Party other than under
                  an obligation of confidentiality; or

                  (c) was independently discovered or developed by the receiving
                  Party or any of its Affiliates, without use of the other
                  Party's Confidential Information, as can be demonstrated by
                  competent proof; or

                  (d) is lawfully disclosed to the receiving Party or any of its
                  Affiliates on a non-confidential basis by a third party that
                  is not in violation of an obligation of confidentiality to the
                  disclosing Party relative to such information.

Information disclosed that is not in written or electronic form shall be subject
to the terms of this Section 5.1 for a period of at least thirty (30) days and
shall be subject to Section 5.1 for a continuing period only if confirmed in
writing to the other Party within thirty (30) days of initial disclosure and
specifying with particularity that Confidential Information disclosed other than
in

                                                                   Page 24 of 57
Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   25
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written or electronic form which is to continue to be subject to the
provisions of this Section 5.1. Each Party may disclose the other's Confidential
Information to the extent such disclosure is reasonably necessary in (i)
prosecuting patent applications and maintaining patents, or (ii) prosecuting or
defending litigation, or (iii) complying with applicable governmental
regulations provided, however, that if a Party is required to make any
disclosure of the other Party's Confidential Information it will give reasonable
advance notice to the other Party of such disclosure requirement and will use
reasonable efforts to secure confidential treatment of such information required
to be disclosed.

         5.2 PUBLICATIONS. It is expected that each Party may wish to publish
the results of its research under the Collaboration Program. In order to
safeguard intellectual property rights, the Party wishing to publish or
otherwise publicly disclose the results of such research shall first submit a
draft of each proposed manuscript to the two Project Coordinators, determined as
set forth in Section 2.2.2, for review, comment and consideration of appropriate
patent action at least eight (8) weeks prior to any submission for publication
or other public disclosure. Within thirty (30) days of receipt of the
pre-publication materials, the Project Coordinators will advise the Party
seeking publication as to whether a patent application will be prepared and
filed or whether trade secret protection should be pursued and, if so, the Joint
Steering Committee will, in cooperation with both Parties, determine the
appropriate timing and content of any such publications. Any dispute of the
Project Coordinators with respect to the subject matter hereof shall be resolved
by the Joint Steering Committee.

         5.3 PUBLICITY. The Parties shall mutually agree on a press release
announcing the execution of this Agreement, which press release shall be
attached as Appendix 5.3. The Parties shall also be permitted hereunder to
disclose the general nature of this Agreement to the extent reasonably necessary
to obtain financing from third parties or potential collaborators, and to make
such other disclosures as mutually agreed by the Parties. Once any written
statement is approved for disclosure by both Parties, either Party may make
subsequent public disclosures of the contents of such statement without the
further approval of the other Party.

                         6. INTELLECTUAL PROPERTY RIGHTS

                                                                   Page 25 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   26
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         6.1 INVENTIONS. Except as otherwise expressly provided herein, all
inventions and discoveries governed by this Agreement shall be owned based on
inventorship, as inventorship is determined in accordance with the patent laws
of the priority filing country. Notwithstanding the foregoing, Collaboration
Data and Collaboration Materials generated during the Term shall be jointly
owned by IMMUNOGEN and MORPHOSYS. Any inventions jointly invented by the Parties
shall be jointly owned and any patent rights obtained thereon shall be owned and
used as expressly provided herein or as determined in accordance with U.S.
Patent Law. The rights and interests of MORPHOSYS and IMMUNOGEN in Collaboration
Inventions shall be subject to the provisions of Section 2.1.4 and of Article 3
and this Article 6.

             7. PROVISIONS CONCERNING THE FILING,

         PROSECUTION AND MAINTENANCE OF PATENT RIGHTS

7.1      PATENT FILING.

                  (a) IMMUNOGEN shall have the right (but not the obligation) to
                  prepare, file, prosecute, obtain and maintain patent
                  applications and patents relating to Collaboration Inventions,
                  Collaboration Data and Collaboration Materials, and all patent
                  applications or patents claiming rights relating to Licensed
                  Products which are exclusively licensed in their entirety to
                  IMMUNOGEN hereunder pursuant to Section 3.2, with the expenses
                  for any such preparation, filing, prosecution and maintenance
                  to be borne by IMMUNOGEN.

                  (b) IMMUNOGEN may elect not to exercise its first right to
                  prepare, file, prosecute, obtain and maintain patent
                  applications and patents as described in Section 7.1(a) above
                  at any time by giving written notice thereof to MORPHOSYS.
                  Such notice shall specifically identify the invention(s),
                  patent application(s) and/or patent(s) for which IMMUNOGEN
                  wishes to relinquish such right. Following the receipt of such
                  notice, MORPHOSYS shall have the right to prepare, file,
                  prosecute, obtain and maintain the patent application(s) and
                  patent(s) identified in the notice, at its sole expense, and
                  MORPHOSYS shall thereafter be deemed the sole owner of any
                  such application or patent, and any

                                                                   Page 26 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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                  such patents and patent applications shall be assigned to
                  MORPHOSYS and removed from operation of this Agreement.

                  (c) MORPHOSYS shall prepare, file, prosecute, obtain and
                  maintain patent applications and patents on MORPHOSYS
                  Background Inventions at its sole expense. IMMUNOGEN agrees to
                  provide reasonable assistance and cooperation to MORPHOSYS to
                  facilitate such filing, prosecution and maintenance upon
                  request of MORPHOSYS.

                  (d) Each Party agrees to cooperate fully in the preparation,
                  filing, and prosecution of any patent applications to be filed
                  or prosecuted pursuant to Section 7.1 (a), (b) or (c). Such
                  cooperation includes, but is not limited to:

                           (i)      executing all papers and instruments, or
                                    requiring its employees or agents, to
                                    execute such papers and instruments, so as
                                    to effectuate the ownership of such patent
                                    applications and any patents thereon and to
                                    enable the filing and prosecution of
                                    applications in any country as contemplated
                                    herein; and

                           (ii)     promptly informing the other Party of any
                                    matters coming to such Party's attention
                                    that may affect the preparation, filing, or
                                    prosecution of any such patent applications.

                  (e) The Parties shall mutually agree before permitting any
                  patent application or patent within Patent Rights licensed to
                  IMMUNOGEN hereunder to lapse as well as before authorizing any
                  amendment to any patent application or patent within such
                  Patent Rights that would irrevocably limit the lawful scope of
                  such Patent Rights.

         7.2      INFRINGEMENT.

                  (a) Notice of Infringement. If, during the Term of this
                  Agreement or the term of any license hereunder, either Party
                  learns of any infringement or threatened

                                                                   Page 27 of 57
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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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                  infringement by a third party of any patent right licensed
                  hereunder, such Party shall promptly notify the other Party
                  and shall provide such other Party with available evidence of
                  such infringement.

                  (b)      Infringement.

                           (i)      IMMUNOGEN shall have the first right (but
                                    not the obligation), at its own expense, to
                                    bring suit (or other appropriate legal
                                    action) against any actual or suspected
                                    infringement of any Patent Rights licensed
                                    hereunder provided that IMMUNOGEN has an
                                    exclusive license to the infringed claim(s)
                                    of any such Patent Right pursuant to Article
                                    3. If IMMUNOGEN does not take such action
                                    within one hundred twenty (120) days after
                                    written notice from MORPHOSYS of such
                                    infringement, MORPHOSYS shall have the right
                                    (but not the obligation), at its own
                                    expense, to bring suit against such
                                    infringement. Any amount recovered, whether
                                    by judgment or settlement, shall first be
                                    applied to reimburse the costs and expenses
                                    (including attorneys' fees) of the Party
                                    bringing suit, then to the costs and
                                    expenses (including attorneys' fees), if
                                    any, of the other Party. Any amounts
                                    remaining shall be allocated [_____
                                    ____________] to the Party bringing suit and
                                    [_______________] to the other Party, or
                                    shall be allocated [___________] if the suit
                                    is brought jointly.

                           (ii)     MORPHOSYS shall have the sole right (but not
                                    the obligation), at its own expense, to
                                    bring suit (or other appropriate legal
                                    action) against any actual or suspected
                                    infringement of any Patent Rights not
                                    exclusively licensed to IMMUNOGEN hereunder.

                           (iii)    MORPHOSYS shall have the sole right to
                                    defend and enforce any claims relating to
                                    infringement of MORPHOSYS Background
                                    Inventions licensed to IMMUNOGEN hereunder.

                                                                   Page 28 of 57
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         7.3 COOPERATION. Each Party shall execute all papers and perform such
other acts (other than monetary) as may be reasonably required to maintain any
infringement suit brought in accordance with Section 7.2 above (including giving
legal consent for bringing such suit, and agreeing to be named as a plaintiff or
otherwise joined in such suit), and at its option and expense, may be
represented in such suit by counsel of its choice. In addition, the Parties
shall cooperate with each other in obtaining patent term restoration or
supplemental protection certificates or their equivalents in any country in the
Territory where applicable to Patent Rights. In the event that elections with
respect to obtaining such patent term restoration, supplemental protection
certificates or their equivalents are to be made, the Parties shall agree upon
such elections.

         7.4 NO OBLIGATION. No Party shall have any obligation to the other
Party under this Agreement to pay any fees or costs: (i) for that Party's
bringing a lawsuit or other action to enforce any of the Patent Rights, any
patents within MORPHOSYS Background Inventions, or any other patent owned by a
Party against an actual or suspected infringement or (ii) for any other Party to
obtain for its own benefit independent business or legal advice concerning any
of the patent rights set forth in subparagraph (i) hereof.

                             8. TERM AND TERMINATION

         8.1 TERM. Unless earlier terminated or as otherwise provided herein,
the term of this Agreement shall extend until the end of such period as
IMMUNOGEN is obligated to pay royalties to MORPHOSYS pursuant to Section 4.9
hereof (the "Term").

         8.2      TERMINATION.
                  -----------

                  (a) This Agreement and the rights and options granted herein
                  may be terminated by either Party upon any material breach by
                  the other Party of any material obligation or condition,
                  effective [______________] after giving written notice to the
                  breaching Party of such termination in the case of a payment
                  breach and [_______________] after giving written notice to
                  the breaching Party of such termination in the case of any
                  other breach, which notice shall describe such

                                                                   Page 29 of 57

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                  breach in reasonable detail. The foregoing notwithstanding, if
                  such default or breach is cured or shown to be non-existent
                  within the aforesaid [____________] or [________] period, the
                  notice shall be deemed automatically withdrawn and of no
                  effect. However, prior to giving any notice for breach, the
                  Parties shall first attempt to resolve any disputes as to the
                  existence of any breach as set forth in Section 9.18.

                  (b) If either Party files for protection under bankruptcy
                  laws, makes an assignment for the benefit of creditors,
                  appoints or suffers appointment of a receiver or trustee over
                  its property, files a petition under any bankruptcy or
                  insolvency act or has any such petition filed against it which
                  is not discharged within sixty (60) days of the filing
                  thereof, then the other Party may terminate this Agreement by
                  notice to such Party.

                  (c) IMMUNOGEN, in its sole discretion, at any time may
                  terminate this Agreement, and the rights and obligations
                  hereunder, or may remove any Licensed Product and the licenses
                  related thereto from operation of this Agreement, in any case
                  effective [__________] (i) [_________________] after
                  [________________ ______________], if [_________________] is
                  given [_________________] for the [_________________], or (ii)
                  [_________________] after [______________ ______________], if
                  [_________________] is given [______________________
                  _____________________]. In the event of any termination under
                  this Section 8.2(c) only as to a Licensed Product, (1) the
                  consequences set forth in Section 8.3(a) below relating to
                  termination of the Agreement under this Section 8.2(c) shall
                  apply only with respect to such terminated Licensed Product,
                  and this Agreement and the rights and obligations hereunder
                  shall continue in full force and effect as to any and all
                  other Licensed Products, and (2) [_________
                  ______________________________________________________________
                  (including [_______ __________)_______________] as of
                  [________] ) and [________________
                  _____________________________________] so as to
                  [_________________] to

                                                                   Page 30 of 57

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                  [____________________________________________________________
                  __________________________].

                  (d) If, despite using the efforts and resources specified in
                  Section 2.1.1 during the Collaboration Term, (1) the Parties
                  fail to meet any Success Criteria within the respective
                  timelines specified in the Collaboration Plan for any
                  IMMUNOGEN Target, and the JSC has decided to terminate the
                  Collaboration Program or (2) the last Success Criteria has not
                  been met within the total timeline given in the Collaboration
                  Plan or its extension as set forth in Section 2.3.2, then
                  along with the related Deliverables, all relevant licenses and
                  obligations hereunder shall terminate with respect to such
                  IMMUNOGEN Target with the consequences as set forth in Section
                  8.3(a) below, unless the Parties otherwise mutually agree. In
                  the event that efforts are unsuccessful with respect to all
                  IMMUNOGEN Targets, this Agreement shall terminate in its
                  entirety upon the expiration of the Collaboration Term and the
                  consequences as set forth in Section 8.3(a) below shall apply
                  mutatis mutandis.

                  8.3      EFFECT OF TERMINATION.

                  (a)      Termination resulting in rights passing to MORPHOSYS.

                           (i) Upon termination of this Agreement by MORPHOSYS
                  pursuant to Sections 8.2 (a) or (b) above or by IMMUNOGEN
                  pursuant to Section 8.2(c) above or by operation of Section
                  8.2(d) above, (A) IMMUNOGEN shall cease all uses of
                  Collaboration Data, Collaboration Materials, Clinical Data,
                  and Collaboration Inventions, as well as sales of all Licensed
                  Products covered by the terminated license(s), and (B) all
                  rights included in the relevant licenses granted by MORPHOSYS
                  to IMMUNOGEN hereunder shall immediately and automatically
                  revert to MORPHOSYS. Without limiting the generality of the
                  foregoing, all relevant licenses and sublicenses granted by
                  MORPHOSYS to IMMUNOGEN hereunder with respect to Licensed
                  Products shall terminate

                                                                   Page 31 of 57

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                  automatically and IMMUNOGEN shall promptly transfer to
                  MORPHOSYS all related documents, instruments, records and data
                  relevant to the development or commercialization of the
                  relevant Licensed Product(s) generated or developed by or on
                  behalf of IMMUNOGEN during the Term of this Agreement, along
                  with all related Collaboration Data, Clinical Data,
                  Collaboration Material in its possession, without retaining
                  any copies of any of the foregoing.

                           (ii) In addition, upon any termination of this
                  Agreement by MORPHOSYS pursuant to Sections 8.2(a) or (b)
                  above or by IMMUNOGEN pursuant to Section 8.2(c) above or by
                  operation of Section 8.2(d) above, (A) IMMUNOGEN shall be
                  deemed without any further action [__________________________]
                  an [___________________________________] (including
                  [________________ _______]) under [_______________________] in
                  [_________________
                  _____________________________________________________________]
                  to the
                  [____________________________________________________________]
                  that are the subject of [___________________________________].
                  Nothing in this Section 8.3(a) shall limit any rights
                  expressly granted to either Party in Article 3 hereof, which
                  survive any such termination.

                  (b) Termination resulting in rights passing to IMMUNOGEN. Upon
                  any termination of this Agreement by IMMUNOGEN pursuant to
                  Section 8.2(a) or (b) above, (A) the [_______________________
                  __________________________________________________________](B)
                  IMMUNOGEN shall [___________] the [__________________________]
                  [____________________________________________________________]
                  for the [____________] and (C) MORPHOSYS shall be deemed
                  without any further action [__________________________]
                  an [______________________________________](including [______
                  ____________________], under [_______________________________
                  _____________________________________________________________
                  _____________________________________________________________

                                                                   Page 32 of 57

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                  [_____________________________________________________________
                  ________________________________________________________
                  ______ for use ________].

                  (c) Documentation. At the request of the non-breaching Party,
                  the breaching Party shall execute and deliver such bills of
                  sale, assignments and licenses and other documents as may be
                  necessary to fully vest in the non-breaching Party all right,
                  title and interest to which it is entitled as aforesaid
                  pursuant to this Section 8.3.

                  (d) Payment Obligations. IMMUNOGEN shall have no obligation to
                  make any milestone or royalty payment to MORPHOSYS that has
                  not accrued prior to the effective date of such termination,
                  but shall remain liable for all obligations accruing prior to
                  termination.

                  (e)      [_________________].

                  (i) Upon termination of this Agreement [________________
                  _________________________________] to [_______________________
                  _________] that is the
                  [___________________________________________ _____________] ,
                  provided that [_____________________________
                  _________________________] (A) [______________________] shall
                  [_____________________________________________________________
                  _____________________] (which [_____________________________]
                  to [____ _______________]) and (B) and
                  [______________________________________
                  ______________________________________________________________
                  ______]. As used herein, the term "[_________________]" shall
                  mean [_______
                  ____________________________________________________________]
                  of a [_________________], including, without limitation, with
                  respect to [_________________] (A) the [___________
                  ________________], including, without limitation,
                  [____________________ ________________]; (B)
                  [__________________________________________
                  ______________________________________] and are based
                  [__________
                  ________________________________________________________]; (C)

                                                                   Page 33 of 57

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confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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                  [_____________________________________________________________
                  _____________________] under clause (A) above, including,
                  without limitation,
                  [___________________________________________________________];
                  and (D) [_______________ __________________________].

                  (ii) [__________________________________________________
                  _________________________________] , provide
                  [_________________] with a
                  [___________________________________________________________].
                  Upon [_________________] from [___________________] and
                  [________________________________________] an [_______________
                  _________________] of
                  [_________________________________________ ___________] and
                  [_________________] to[___________________________
                  ____________________________________________________________]
                  for purposes of [_____________________ _______]. In every case
                  [___________] must have [_____________] into a
                  [___________________________________________________________]
                  of this Agreement and [__________________________________
                  _______] by [_________________] to [________________________]
                  and [________________________________________. ___________]
                  shall [________ _________________________________________] and
                  the [_______
                  __________._______________________________._________________.
                  _____________________________________________________________]
                  of this Agreement.[____________________________] or
                  [______________] in the [_______] of
                  [______________________________ _______________].

         8.4 REMEDIES. If either Party shall fail to perform or observe or
otherwise breaches any of its material obligations under this Agreement, in
addition to any right to terminate this

                                                                   Page 34 of 57

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Agreement, the non-defaulting Party may elect to obtain other relief and
remedies available under law, subject to compliance with the provisions of
Section 9.18.

         8.5 SURVIVING PROVISIONS. Notwithstanding any provision herein to the
contrary, the rights and obligations set forth in Sections 1, 5, 6, 7, 8.3, and
9 hereof shall survive the expiration or termination of the Term of this
Agreement.

                                9. MISCELLANEOUS

         9.1 MORPHOSYS REPRESENTATIONS. MORPHOSYS represents and warrants that:
(a) the execution and delivery of this Agreement and the performance of the
transactions contemplated hereby have been duly authorized by all appropriate
MORPHOSYS corporate action; (b) MORPHOSYS is under no obligation which is
inconsistent with this Agreement; and (c) MORPHOSYS has the full right and legal
capacity to grant the rights to IMMUNOGEN pursuant to Article 3 without
violating its obligations to or the rights of any third party.

         9.2 IMMUNOGEN REPRESENTATIONS. IMMUNOGEN represents and warrants that:
(a) the execution and delivery of this Agreement and the performance of the
transactions contemplated hereby have been duly authorized by all appropriate
IMMUNOGEN corporate action; (b) IMMUNOGEN is under no obligation which is
inconsistent with this Agreement; and (c) IMMUNOGEN has the full right and legal
capacity to grant the rights to MORPHOSYS pursuant to Article 3 without
violating its obligations to or the rights of any third party.

         9.3      NO WARRANTIES.

                  (a)      Nothing in this Agreement is or shall be construed
                           as:

                           (i)      a warranty or representation by either Party
                                    as to the validity or scope of any
                                    application or patent licensed hereunder;

                           (ii)     a warranty or representation that anything
                                    made, used, sold or otherwise disposed of
                                    under any license granted pursuant to this

                                                                   Page 35 of 57

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confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
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                                    Agreement is or will be free from
                                    infringement of patents, copyrights, and
                                    other rights of third parties;

                           (iii)    obligating either Party to commercialize
                                    inventions made hereunder or to perform any
                                    additional work beyond that set forth in the
                                    Collaboration Plan and in Section 3.3.

                  (b) Except as expressly set forth in this Agreement, NEITHER
                  PARTY MAKES ANY REPRESENTATION OR EXTENDS ANY WARRANTIES OF
                  ANY KIND, EITHER EXPRESS OR IMPLIED. THERE ARE NO EXPRESS OR
                  IMPLIED WARRANTIES OF MErcHANTABILITY OR FITNESS FOR A
                  PARTICULAR PURPOSE, OR OF NON-INFRINGEMENT OF ANY PATENT,
                  COPYRIGHT, TRADEMARK, OR OTHER RIGHTS, OR ANY OTHER EXPRESS OR
                  IMPLIED WARRANTIES.

         9.4 [__________]. NOTWITHSTANDING ANYTHING ELSE IN THIS AGREEMENT OR
OTHERWISE, [_________________] WILL BE [_________________ ___________] OF THIS
AGREEMENT [________________________________________________] FOR (I) [_________
____________________________________________________________] OR (II)
[_________________________________________________________ ____________].

         9.5 NOTICES. Any notices, requests, deliveries, approvals or consents
required or permitted to be given under this Agreement to IMMUNOGEN or MORPHOSYS
shall be in writing and shall be personally delivered or sent by telecopy (with
written confirmation to follow via United States first class mail), overnight
courier providing evidence of receipt or certified mail, return receipt
requested, postage prepaid, in each case to the respective address specified
below (or to such address as may be specified in writing to the other Party
hereto):

         MORPHOSYS:        Lena-Christ-Str. 48
                           82152 Martinsried
                           Munich, Germany

                                                                   Page 36 of 57

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<PAGE>   37
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                           Attn: Chief Executive Officer
                           Telecopy:  011-49-89-899-27-222

         With a copy to :  Ronald J. Kamis, Esq.
                           Foley & Lardner
                           3000 K Street, N. W., Washington Harbor
                           Washington, D.C. 20007
                           Telecopy: 202-672-5399

         IMMUNOGEN:        IMMUNOGEN, INC.
                           128 Sidney Street
                           Cambridge, Massachusetts  02139
                           Attn:  Chief Executive Officer

         With a copy to :  Mintz, Levin, Cohn, Ferris. Glovsky & Popeo, P.C.
                           One Financial Center
                           Boston, Massachusetts 02111
                           Attn:  Jeffrey M. Wiesen, Esq.
                           Telecopy: 617-542-2241

         Such notices shall be deemed to have been sufficiently given on: (i)
the date delivered if delivered in person or transmitted by telecopy, (ii) the
next business day after dispatch in the case of overnight courier or (iii) five
(5) business days after deposit in the U.S. mail in the case of certified mail.

         9.6 GOVERNING LAW. This Agreement will be construed, interpreted and
applied in accordance with the laws of Delaware (excluding its body of law
controlling conflicts of law) and, where appropriate, the United States of
America.

         9.7 LIMITATIONS. Except as set forth elsewhere in this Agreement,
neither Party grants to the other Party any right or license to any of its
intellectual property.

         9.8 ENTIRE AGREEMENT. This is the entire Agreement between the Parties
with respect to the subject matter hereof and supersedes all prior agreements
between the Parties with respect to the subject matter hereof. No modification
shall be effective unless in writing with specific reference to this Agreement
and signed by the Parties.

                                                                   Page 37 of 57

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         9.9 WAIVER. The terms or conditions of this Agreement may be waived
only by a written instrument executed by the Party waiving compliance. The
failure of either Party at any time or times to require performance of any
provision hereof shall in no manner affect its rights at a later time to enforce
the same. No waiver by either Party of any condition or term shall be deemed as
a continuing waiver of such condition or term or of another condition or term.

         9.10 HEADINGS. Section and subsection headings are inserted for
convenience of reference only and do not form part of this Agreement.

         9.11 ASSIGNMENT. This Agreement may not be assigned by either Party
without the consent of the other, except that each Party may, without such
consent, assign this Agreement and the rights, obligations and interests of such
Party, in whole or in part, to any of its Affiliates, to any purchaser of all or
substantially all of its assets in the line of business to which this Agreement
pertains or to any successor corporation resulting from any merger or
consolidation of such Party with or into such corporations.

         9.12 FORCE MAJEURE. Neither Party shall be liable for failure of or
delay in performing obligations set forth in this Agreement, and neither shall
be deemed in breach of its obligations, if such failure or delay is due to
natural disasters or any causes beyond the reasonable control of such Party. In
event of such force majeure, the Party affected thereby shall use reasonable
efforts to cure or overcome the same and resume performance of its obligations
hereunder.

         9.13 CONSTRUCTION. The Parties hereto acknowledge and agree that: (i)
each Party and its counsel reviewed and negotiated the terms and provisions of
this Agreement and have contributed to its revision; (ii) the rule of
construction to the effect that any ambiguities are resolved against the
drafting Party shall not be employed in the interpretation of this Agreement;
and (iii) the terms and provisions of this Agreement shall be construed fairly
as to all Parties hereto and not in a favor of or against any Party, regardless
of which Party was generally responsible for the preparation of this Agreement.

         9.14 SEVERABILITY. If any provision(s) of this Agreement are or become
invalid, are ruled illegal by any court of competent jurisdiction or are deemed
unenforceable under then

                                                                   Page 38 of 57

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confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   39
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current applicable law from time to time in effect during the Term hereof, it is
the intention of the Parties that the remainder of this Agreement shall not be
affected thereby provided that a Party's rights under this Agreement are not
materially affected. The Parties hereto covenant and agree to renegotiate any
such term, covenant or application thereof in good faith in order to provide a
reasonably acceptable alternative to the term, covenant or condition of this
Agreement or the application thereof that is invalid, illegal or unenforceable,
it being the intent of the Parties that the basic purposes of this Agreement are
to be effectuated.

         9.15 STATUS. Nothing in this Agreement is intended or shall be deemed
to constitute a partner, agency, employer-employee, or joint venture
relationship between the Parties.

         9.16     INDEMNIFICATION.

                  (a) IMMUNOGEN shall indemnify, defend and hold harmless
                  MORPHOSYS, its Affiliates and their respective directors,
                  officers, employees, and agents and their respective
                  successors, heirs and assigns (the "MORPHOSYS Indemnitees"),
                  against any liability, damage, loss or expense (including
                  reasonable attorneys' fees and expenses of litigation)
                  incurred by or imposed upon the MORPHOSYS Indemnitees, or any
                  of them, in connection with any claims, suits, actions,
                  demands or judgments of third parties, including without
                  limitation personal injury and product liability matters
                  (except in cases where such claims, suits, actions, demands or
                  judgments result from gross negligence or willful misconduct
                  on the part of MORPHOSYS) arising out of or relating to any
                  actions of IMMUNOGEN or any Affiliate, licensee, sublicensees,
                  distributor or agent of IMMUNOGEN under this Agreement or in
                  the development, testing, production, manufacture, promotion,
                  import, sale or use by any person of any Licensed Product
                  manufactured or sold by IMMUNOGEN or by an Affiliate,
                  Sublicensee, distributor or agent of IMMUNOGEN.

                  (b) If and only if MORPHOSYS commercializes an Antibody
                  Product, MORPHOSYS shall indemnify, defend and hold harmless
                  IMMUNOGEN, its Affiliates and their respective directors,
                  officers, employees, and agents and their

                                                                   Page 39 of 57

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confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   40
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                  respective successors, heirs and assigns (the "IMMUNOGEN
                  Indemnitees"), against any liability, damage, loss or expense
                  (including reasonable attorneys' fees and expenses of
                  litigation) incurred by or imposed upon the IMMUNOGEN
                  Indemnitees, or any of them, in connection with any claims,
                  suits, actions, demands or judgments of third parties,
                  including without limitation personal injury and product
                  liability matters (except in cases where such claims, suits,
                  actions, demands or judgments result from gross negligence or
                  willful misconduct on the part of IMMUNOGEN) arising out of or
                  relating to any actions of MORPHOSYS or any Affiliate,
                  licensee, sublicensees, distributor or agent of MORPHOSYS
                  under this Agreement or in the development, testing,
                  production, manufacture, promotion, import, sale or use by any
                  person of the commercialized Antibody Product manufactured or
                  sold by MORPHOSYS or by an Affiliate, Sublicensee, distributor
                  or agent of MORPHOSYS.

                  (c) Indemnitees shall promptly notify the indemnifying party
                  of any action or claim for which it is to be indemnified
                  hereunder.

         9.17 FURTHER ASSURANCES. Each Party agrees to execute, acknowledge and
deliver such further instructions, and to do all such other acts, as may be
necessary or appropriate in order to carry out the purposes and intent of this
Agreement.

         9.18     DISPUTE RESOLUTION.

                  (a) The Parties recognize that disputes as to certain matters
                  may from time to time arise during the term of this Agreement
                  which relate to either Party's rights and/or obligations
                  hereunder. It is the objective of the Parties to establish
                  procedures to facilitate the resolution of disputes arising
                  under this Agreement in an expedient matter by mutual
                  cooperation and without resort to litigation. To accomplish
                  this objective, the Parties agree to follow the procedures set
                  forth in this Section 9.18 if and when a dispute arises under
                  this Agreement between the Parties or among the Joint Steering
                  Committee.

                                                                   Page 40 of 57

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<PAGE>   41
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                  (b) If the Parties or the Joint Steering Committee cannot
                  resolve any such dispute by good faith negotiations, which
                  good faith negotiations both Parties agree to undertake within
                  20 days of formal request by either Party to the other, any
                  Party may, by written notice to the other, have such dispute
                  referred to the Chief Executive Officers of both Parties for
                  attempted resolution by good faith negotiations within 30 days
                  after such notice is received.

                  (c) Any such dispute arising out of or relating to this
                  Agreement (except disputes relating to patent validity,
                  enforceability and/or infringement, which disputes shall not
                  be subject of this Section 9.18), which is not resolved
                  between the Parties or the Joint Steering Committee or the
                  Chief Executive Officers of the Parties pursuant to Section
                  9.18(b), shall be resolved by final and binding arbitration
                  conducted in Boston, Massachusetts under the then current
                  rules of the American Arbitration Association ("AAA"). The
                  arbitration shall be conducted by three arbitrators who are
                  knowledgeable in the subject matter which is at issue in the
                  dispute. Each party selects within two weeks after
                  notification by one party to initiate arbitration one arbiter
                  and the arbiters selected by the parties elect the chairman of
                  the arbitration panel, or, failing such election within four
                  weeks after nomination of the arbiters by the parties the
                  chairman of the arbitration panel, shall be selected according
                  to the AAA rules. In conducting the arbitration, the
                  arbitrator shall be able to decree any and all relief of an
                  equitable nature, including but not limited to such relief as
                  a temporary restraining order, a preliminary injunction, a
                  permanent injunction, or replevin of property. The arbitrator
                  shall also be able to award actual damages, but shall not
                  award any other form of damage (e.g., consequential,
                  incidental, punitive or exemplary damages). The Parties shall
                  share equally the arbitrator's fees and expenses pending the
                  resolution of the arbitration unless the arbitrator, pursuant
                  to his or her right but not his or her obligations, requires
                  the non-prevailing Party to bear all or any portion of the
                  costs of the prevailing Party. The decision of the arbitrator
                  shall be

                                                                   Page 41 of 57

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confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   42
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                  final and may be sued on or enforced by the Party in whose
                  favor it runs in any court of competent jurisdiction at the
                  option of such Party.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                                                   Page 42 of 57

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<PAGE>   43
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

         IN WITNESS WHEREOF, the Parties have caused this Agreement to be
executed by their duly authorized representative in two (2) originals.

IMMUNOGEN, INC.                                      MORPHOSYS AG

_______________________                              ________________________

By:                                                  By:

Title:                                               Title:

                                                     _________________________

                                                     By:

                                                     Title:

                                                                   Page 43 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   44
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                                  APPENDIX 1.8

                               Collaboration Plan

[___________________________________________________________________________]

DELIVERY OF [_________________]

Success criteria
[_________________]

Workplan
1.)      [_________________]

2.)      [_________________]

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------------------
                              DETAILS                                         COMMENTS                 DURATION
<S>                                                                           <C>                      <C>
</TABLE>

                                                                   Page 44 of 57

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   45
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

<TABLE>
------------------------------------------------------------------------------------------------------------------------
<S>                           <C>                                             <C>                      <C>
1) [__________]               [__________]                                    [__________]             BEST CASE:
                                                                                                       [_________]
                                                                                                       WORST CASE:
                                                                                                       [_________]

------------------------------------------------------------------------------------------------------------------------
2) [__________]               [__________]                                    [__________]
------------------------------------------------------------------------------------------------------------------------
3) [__________]               [__________]                                    [__________]
------------------------------------------------------------------------------------------------------------------------
4) [__________]               [__________]                                    [__________]
------------------------------------------------------------------------------------------------------------------------
5) [__________]               [__________]                                    [__________]
------------------------------------------------------------------------------------------------------------------------
6) [__________]               [__________]                                    [__________]
------------------------------------------------------------------------------------------------------------------------
GOAL 1: [____________________]
------------------------------------------------------------------------------------------------------------------------
7) [__________]             [__________]                                      [__________]             BEST CASE:
                                                                                                       [_________]
                                                                                                       WORST CASE:
                                                                                                       [_________]
------------------------------------------------------------------------------------------------------------------------
GOAL 1: [____________________]
------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 45 of 57

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   46
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

<TABLE>
------------------------------------------------------------------------------------------------------------------------
<S>                         <C>                                               <C>                      <C>
8) [__________]             [__________]                                      [__________]             BEST CASE:
                                                                                                       [_________]
                                                                                                       WORST CASE:
                                                                                                       [_________]
------------------------------------------------------------------------------------------------------------------------
GOAL 2: [____________________]
------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 46 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   47
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                                  APPENDIX 1.16

                              IMMUNOGEN TARGET LIST

[___________________]

                                                                   Page 47 of 57

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   48
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                                  APPENDIX 1.21

                          MORPHOSYS HuCAL Technologies

[________________________________]

1.       [__________] is a [_______________________________________________
         ___________________] used for [____________________________. _____
         ___________________________]. The [_____] of [__________] as well as
         [__________] are
         [__________________________________________________________________].
         The [__________________] was determined to be [__________________].

2.       [___________________________________].

3.       The [___________________] with [___________________________________
         __________].

4.       [__________] are available for [__________].

[__________________]

1.       [____________________________________________________________________].

2.       [______________________________________________________] and can be
         used to [__________________]. It
         [___________________.[____________________________ __________] at the
         [_________________________________] useful for [__________
         _______________________] using the [__________], followed by
         [________________ _______________________] useful for [__________].

[__________]

1.       [____________________________________________________________________]

                                                                   Page 48 of 57

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   49
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

[__________]

1.       [______________________________________________] for the [__________]
         of [_______________________________________________________].

2.       [____________________] the [____________________] of
         [______________________________] into [__________].

3.       [____________________________________________________________________].
         The [___________________________________________] for [_________
         __________________________].

4.       [______________________________________________].

5.       [_______________________________________________________]. The [____
          ____________________________________________________________________].

                                                                   Page 49 of 57

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   50
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                                  APPENDIX 3.2

                          SUBLICENSE OF CERTAIN RIGHTS

1)       [________________________] in relation to [____________].

         [_____________________________________________________________________

         ______________________________________________________________________

         _____________________________________________________________________].

2)       [____________________________] in relation to [____________________
         ___________]:

         [___________________________________________________________________].

3)       [________________] in relation [_____________________________________]:
                                        [____________]

<TABLE>
<CAPTION>
    --------------------------------------------------------------------------------------------------------------------
         COUNTRY         SERIAL NUMBER         FILING DATE         PATENT NUMBER        ISSUE DATE         STATUS
    --------------------------------------------------------------------------------------------------------------------
<S>                      <C>                   <C>                 <C>                  <C>              <C>
       [________]          [________]          [________]           [________]          [________]       [________]
    --------------------------------------------------------------------------------------------------------------------
       [________]          [________]          [________]           [________]          [________]       [________]
    --------------------------------------------------------------------------------------------------------------------
       [________]          [________]          [________]           [________]                           [________]
    --------------------------------------------------------------------------------------------------------------------
       [________]          [________]          [________]           [________]                           [________]
    --------------------------------------------------------------------------------------------------------------------
       [________]          [________]          [________]           [________]          [________]       [________]
    --------------------------------------------------------------------------------------------------------------------
       [________]          [________]          [________]           [________]                           [________]
    --------------------------------------------------------------------------------------------------------------------
       [________]          [________]          [________]           [________]                           [________]
    --------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                   Page 50 of 57

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   51
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                       [________________________________]

Title:            [___________________________________________________]
Inventors:        [__________________________________]

1)       Based on [____________], which is a [________________________________
         ________________________]

<TABLE>
<CAPTION>
              COUNTRY                            SERIAL NO.                        PATENT NO.
<S>                                              <C>                               <C>
              [________]                         [________]                        [________]
              [________]                         [________]                        [________]
              [________]                         [________]                        [________]
              [________]                         [________]                        [________]
              [________]                         [________]                        [________]
              [________]                         [________]                        [________]
</TABLE>

2)       Based on [_________________] which [__________________] which is
         [______ _____________________________________], which is [____________
         ___________ _________________]

<TABLE>
<CAPTION>
              COUNTRY                              SERIAL NO.                      PATENT NO.
<S>                                                <C>                             <C>
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
</TABLE>

                                                                  Page 51 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   52
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

[____________________________]

<TABLE>
<S>                                                 <C>                            <C>
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]
</TABLE>

3)       Based on [____________________________________] which is [____________
       ___________________________________________________________________] and
       [_____________________________________________________________________].

<TABLE>
<CAPTION>
              COUNTRY                              SERIAL NO.                       PATENT NO.
<S>                                                <C>                              <C>
              [_____]                               [_____]
              [_____]                               [_____]
              [_____]                               [_____]
              [_____]                               [_____]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
</TABLE>

[___________________________________________]

                                                                  Page 52 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   53
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

TITLE:   [_________________________________]

INVENTORS:             [________]

Based on [_________________________________________________]

<TABLE>
<CAPTION>
             COUNTRY                                SERIAL NO.                     PATENT NO.
<S>                                                 <C>                            <C>
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]                        [________]
              [_____]                               [_____]
</TABLE>

                                                                  Page 53 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   54
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                                  APPENDIX 3.6

        GOOD FAITH ESTIMATE OF AGGREGATE COSTS FOR ANTIBODY OPTIMIZATION

Based on an FTE rate of [_____________], the estimate for antibody optimization
aggregate costs is [________________________] based upon [_________________] and
may vary depending on the amount of work needed.

                                                                  Page 54 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   55
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

                                  APPENDIX 5.3
Press Release
Cambrdige, Massachusetts and Munich, Germany, October 2, 2000

              MORPHOSYS ENTERS CANCER COLLABORATION WITH IMMUNOGEN

MorphoSys AG (Neuer Markt: MOR), the German biotechnology company based in
Munich/Martinsried, today announced a collaboration with ImmunoGen, Inc.
(NASDAQ: IMGN), a Cambridge, Massachusetts-based biotechnology company. The two
companies will collaborate on the development of human antibodies for the
treatment of cancer. Under the agreement, MorphoSys will receive a technology
access payment, as well as development-related milestone payments and royalties
on marketed products. Financial details were not disclosed.

In the collaboration, MorphoSys will apply its HuCAL-Fab technology to discover
and optimize fully human antibodies against an unspecified ImmunoGen cell
surface target associated with a number of forms of cancer. ImmunoGen will be
responsible for developing one or more antibodies generated by MorphoSys into a
marketable product.

"We are delighted to be collaborating with ImmunoGen, a company with great
experience in the development of antibody-based cancer therapeutics", commented
Daniel L. Menichella, President, MorphoSys USA and Senior Vice President of
Corporate Development. "This deal, our sixth this year, is another example of
our ability to form partnerships based on our HuCAL technology with companies
committed to developing fully human antibodies."

"We look forward to working with MorphoSys in this program. We believe their
antibody library is the best technology available for rapid generation of human
antibodies to our target," said Walter A. Blattler, Ph.D., Executive Vice
President, Science and Technology, ImmunoGen. "This program is a part of our
strategy of developing antibody-based products from targets generated by our
Apoptosis Technology, Inc. subsidiary, and is an example of our efforts to fill
our pipeline of internally-developed products."

MorphoSys develops and applies innovative technologies for the production of
synthetic antibodies which accelerate drug discovery and target
characterisation. Founded in 1992, the Company's proprietary Human Combinatorial
Antibody Library (HuCAL) technology is used by researchers world-wide for human
antibody generation. The Company currently has licensing and research
collaborations with Bayer (Berkeley, California/USA), Roche AG
(Basel/Switzerland), DuPont Pharmaceuticals (Wilmington, Delaware/USA),
Millennium (Cambridge, Mass/USA), Chiron (Emeryville, California/USA), GPC
Biotech AG (Munich/Germany) ProChon Biotech (Revohot/Israel) and Eos
Biotechnology (South San Francisco/California/USA).

ImmunoGen, Inc. develops innovative biopharmaceuticals, primarily for cancer
treatment. The

                                                                  Page 55 of 57

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Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   56
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

Company creates potent tumor-activated prodrugs (TAPs), consisting of small
molecular, cytotoxic drugs coupled to monoclonal antibodies for delivery to and
destruction of cancer cells. The most advanced TAP, huC242-DM1/SB-408075,
designed to treat colorectal and pancreatic cancer, is in two Phase I/II human
clinical studies. The Company's subsidiary, Apoptosis Technology, Inc. (ATI),
identifies defects in apoptosis - also known as cell suicide -- pathways.
Besides MorphoSys, the company has collaborations with SmithKline Beecham,
Genentech, Abgenix and British Biotech.

Statements included in this press release which are not historical in nature are
intended to be, and are hereby identified as, "forward-looking statements" for
purposes of the safe harbour provided by Section 21E of the Securities Exchange
Act of 1934, as amended by the Private Securities Litigation Reform Act of 1995.
Forward-looking statements may be identified by words including "anticipates",
"believes", "intends", "estimates", "expects" and similar expressions. The
companies caution readers that forward-looking statements, including without
limitation those relating to the companies' future operations and business
prospects, are subject to certain risks and uncertainties that could cause
actual results to differ materially from those indicated in the forward-looking
statements. Factors that may affect future operations and business prospects
include, but are not limited to, clinical and scientific results and
developments concerning corporate collaborations and the companies' proprietary
rights, uncertainties related to operations and other factors described in the
Offering Circular of MorphoSys dated March 5, 1999 relating to the company's
public offering. The companies are not undertaking any obligation to release
publicly any updates to any forward-looking statements to reflect events or
circumstances after the date of this release or to reflect the occurrence of
unanticipated events.

FOR FURTHER INFORMATION PLEASE CONTACT:

MORPHOSYS AG                           MORPHOSYS AG

Lisa Richert, Head of PR               Dave Lemus; Chief Financial Officer

Tel.: +49 (0) 89 / 899 27-122          Tel: +49 (0) 89 / 899 27-439

Fax: +49 (0) 89 / 899 27-5122          Fax: +49 (0) 89 / 899 27-5309

Richert@morphosys.de                   Investors@morphoSys.de

www.morphosys.de                       www.morphosys.de

IMMUNOGEN
Mitchel Sayare; Chairman and CEO
Tel:  (617)995-2500
Fax:  (617)995-2510

                                                                  Page 56 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.
<PAGE>   57
Morphosys - Immunogen Collaboration and License Agreement         Execution Copy

Info@immunogen.com
www.immunogen.com

- Redacted version of 1381142

                                                                  Page 57 of 57

Portions of this Exhibit were omitted and have been filed separately with the
Secretary of the Commission pursuant to the Company's application requesting
confidential treatment under Rule 24b-2 of the Securities Exchange Act of 1934.

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