CORVAS INTERNATIONAL INC
SC 13G, 2000-04-14
PHARMACEUTICAL PREPARATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                  SCHEDULE 13G
                                 (RULE 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b) (c) AND (d) AND AMENDMENTS THERETO FILED
                              PURSUANT TO 13d-2(b)
                               (AMENDMENT NO. __)1

                            CORVAS INTERNATIONAL INC.
                                (Name of Issuer)

                                  COMMON STOCK
                         (Title of Class of Securities)

                                   221005 10 1
                                 (CUSIP Number)

                                  APRIL 4, 2000
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

                  / /      Rule 13d-1(b)
                  /X/      Rule 13d-1(c)
                  / /      Rule 13d-1(d)



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

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

<PAGE>

- ------------------------------                    -----------------------------
    CUSIP NO. 221005 10 1            13G                 PAGE 2 OF 8 PAGES
- ------------------------------                    -----------------------------


- --------- ----------------------------------------------------------------------
   1      NAME OF REPORTING PERSON:
                   BIOTECHNOLOGY VALUE FUND, L.P.
          I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY):
- --------- ----------------------------------------------------------------------
   2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                (a) /X/  (b) / /
- --------- ----------------------------------------------------------------------
   3      SEC USE ONLY

- --------- ----------------------------------------------------------------------
   4      CITIZENSHIP OR PLACE OF ORGANIZATION
                  DELAWARE
- -------------------------- ----- -----------------------------------------------

         NUMBER             5    SOLE VOTING POWER
           OF                          0
         SHARES                  -----------------------------------------------
      BENEFICIALLY          6    SHARED VOTING POWER
      OWNED BY EACH                    579,957
        REPORTING                -----------------------------------------------
         PERSON             7    SOLE DISPOSITIVE POWER
          WITH                         0
                                 -----------------------------------------------
                            8    SHARED DISPOSITIVE POWER
                                       579,957
- --------- ----------------------------------------------------------------------
   9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
          PERSON
                   579,957
- --------- ----------------------------------------------------------------------
   10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
          CERTAIN SHARES*                                                  / /
- --------- ----------------------------------------------------------------------
   11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                   2.7%
- --------- ----------------------------------------------------------------------
   12     TYPE OF REPORTING PERSON*
                   PN
- --------- ----------------------------------------------------------------------

                     * SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

- ------------------------------                    -----------------------------
    CUSIP NO. 221005 10 1            13G                 PAGE 3 OF 8 PAGES
- ------------------------------                    -----------------------------


- --------- ----------------------------------------------------------------------
   1      NAME OF REPORTING PERSON:
                   BIOTECHNOLOGY VALUE FUND II, L.P.
          I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY):
- --------- ----------------------------------------------------------------------
   2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                (a) /X/  (b) / /
- --------- ----------------------------------------------------------------------
   3      SEC USE ONLY

- --------- ----------------------------------------------------------------------
   4      CITIZENSHIP OR PLACE OF ORGANIZATION
                  DELAWARE
- -------------------------- ----- -----------------------------------------------

         NUMBER             5    SOLE VOTING POWER
           OF                          0
         SHARES                  -----------------------------------------------
      BENEFICIALLY          6    SHARED VOTING POWER
      OWNED BY EACH                    667,062
        REPORTING                -----------------------------------------------
         PERSON             7    SOLE DISPOSITIVE POWER
          WITH                         0
                                 -----------------------------------------------
                            8    SHARED DISPOSITIVE POWER
                                       667,062
- --------- ----------------------------------------------------------------------
   9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
          PERSON
                   667,062
- --------- ----------------------------------------------------------------------
   10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
          CERTAIN SHARES*                                                  / /
- --------- ----------------------------------------------------------------------
   11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                   3.1%
- --------- ----------------------------------------------------------------------
   12     TYPE OF REPORTING PERSON*
                   PN
- --------- ----------------------------------------------------------------------

                     * SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

- ------------------------------                    -----------------------------
    CUSIP NO. 221005 10 1            13G                 PAGE 4 OF 8 PAGES
- ------------------------------                    -----------------------------


- --------- ----------------------------------------------------------------------
   1      NAME OF REPORTING PERSON:
                   BVF PARTNERS L.P.
          I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY):
- --------- ----------------------------------------------------------------------
   2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                (a) /X/  (b) / /
- --------- ----------------------------------------------------------------------
   3      SEC USE ONLY

- --------- ----------------------------------------------------------------------
   4      CITIZENSHIP OR PLACE OF ORGANIZATION
                  DELAWARE
- -------------------------- ----- -----------------------------------------------

         NUMBER             5    SOLE VOTING POWER
           OF                          0
         SHARES                  -----------------------------------------------
      BENEFICIALLY          6    SHARED VOTING POWER
      OWNED BY EACH                    1,400,351
        REPORTING                -----------------------------------------------
         PERSON             7    SOLE DISPOSITIVE POWER
          WITH                         0
                                 -----------------------------------------------
                            8    SHARED DISPOSITIVE POWER
                                       1,400,351
- --------- ----------------------------------------------------------------------
   9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
          PERSON
                   1,400,351
- --------- ----------------------------------------------------------------------
   10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
          CERTAIN SHARES*                                                  / /
- --------- ----------------------------------------------------------------------
   11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                   6.6%
- --------- ----------------------------------------------------------------------
   12     TYPE OF REPORTING PERSON*
                   PN
- --------- ----------------------------------------------------------------------

                     * SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

- ------------------------------                    -----------------------------
    CUSIP NO. 221005 10 1            13G                 PAGE 5 OF 8 PAGES
- ------------------------------                    -----------------------------


- --------- ----------------------------------------------------------------------
   1      NAME OF REPORTING PERSON:
                   BVF INC.
          I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY):
- --------- ----------------------------------------------------------------------
   2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                (a) /X/  (b) / /
- --------- ----------------------------------------------------------------------
   3      SEC USE ONLY

- --------- ----------------------------------------------------------------------
   4      CITIZENSHIP OR PLACE OF ORGANIZATION
                  DELAWARE
- -------------------------- ----- -----------------------------------------------

         NUMBER             5    SOLE VOTING POWER
           OF                          0
         SHARES                  -----------------------------------------------
      BENEFICIALLY          6    SHARED VOTING POWER
      OWNED BY EACH                    1,400,351
        REPORTING                -----------------------------------------------
         PERSON             7    SOLE DISPOSITIVE POWER
          WITH                         0
                                 -----------------------------------------------
                            8    SHARED DISPOSITIVE POWER
                                       1,400,351
- --------- ----------------------------------------------------------------------
   9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
          PERSON
                   1,400,351
- --------- ----------------------------------------------------------------------
   10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
          CERTAIN SHARES*                                                  / /
- --------- ----------------------------------------------------------------------
   11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                   6.6%
- --------- ----------------------------------------------------------------------
   12     TYPE OF REPORTING PERSON*
                   IA, CO
- --------- ----------------------------------------------------------------------

                   * SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

- ------------------------------                    -----------------------------
    CUSIP NO. 221005 10 1            13G                 PAGE 6 OF 8 PAGES
- ------------------------------                    -----------------------------


ITEM 1(a).        NAME OF ISSUER:
                  Corvas International Inc. ("Corvas")

ITEM 1(b).        ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                  3030 Science Park Road
                  San Diego, CA 92121

ITEM 2(a).        NAME OF PERSON FILING:

                  This Schedule 13G is being filed on behalf of the following
                  persons*:

                  (i)      Biotechnology Value Fund, L.P. ("BVF")
                  (ii)     Biotechnology Value Fund II, L.P. ("BVF2")
                  (iii)    BVF Partners L.P.  ("Partners")
                  (iv)     BVF Inc. ("BVF Inc.")

                  *        Attached as Exhibit A is a copy of an agreement among
                           the persons filing (as specified hereinabove) that
                           this Schedule 13G is being filed on behalf of each of
                           them.

ITEM 2(b).  ADDRESS OF PRINCIPAL BUSINESS OFFICE:

                           The principal business office of the persons
comprising the group filing this Schedule 13G is located at 227 West Monroe
Street, Suite 4800, Chicago, Illinois, 60606.

ITEM 2(c).        CITIZENSHIP:

                  BVF:                            a Delaware limited partnership
                  BVF2:                           a Delaware limited partnership
                  Partners:                       a Delaware limited partnership
                  BVF Inc.:                       a Delaware corporation

ITEM 2(d).        TITLE OF CLASS OF SECURITIES:

                  Common Stock.

ITEM 2(e).        CUSIP NUMBER:

                  221005 10 1

<PAGE>

- ------------------------------                    -----------------------------
    CUSIP NO. 221005 10 1            13G                 PAGE 7 OF 8 PAGES
- ------------------------------                    -----------------------------

ITEM 3.  IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(b), OR 13d-2(b) OR
         (c) CHECK WHETHER THE PERSON FILING IS: ONE OF THE
         FOLLOWING

         Not applicable as this Schedule 13G is filed pursuant to Rule 13d 1(c).

ITEM 4.  OWNERSHIP:

         The information in items 1 and 5 through 11 on the cover pages
(pp. 2 - 5) on this Schedule 13G is hereby incorporated by reference.

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

         If this statement is being filed to report the fact that as of
the date hereof the reporting person has ceased to be the beneficial owner of
more than five percent of the class of securities check the following. / /

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

         BVF shares voting and dispositive power over the shares of the
common stock it beneficially owns with Partners. BVF2 also shares voting and
dispositive power over the shares of the common stock it beneficially owns with
Partners. Partners and BVF Inc. share voting and dispositive power over the
shares of the common stock they beneficially own with, in addition to BVF and
BVF2, certain managed accounts on whose behalf Partners, as investment manager,
purchased such shares. None of the managed accounts individually owns more than
5% of the common stock of Corvas.

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

         Not applicable.

ITEM 8.  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF A GROUP:

         Not applicable.

ITEM 9.  NOTICE OF DISSOLUTION OF GROUP:

         Not applicable.


<PAGE>

- ------------------------------                    -----------------------------
    CUSIP NO. 221005 10 1            13G                 PAGE 8 OF 8 PAGES
- ------------------------------                    -----------------------------


ITEM 10. CERTIFICATION

         By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not held
for the purpose of or with the effect of changing or influencing the control of
the issuer of the securities and were not acquired and are not held in
connection with or as a participant in any transaction having that purpose or
effect.

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

Dated:   April 14, 2000

                  BIOTECHNOLOGY VALUE FUND, L.P.

                  By:      BVF Partners L.P., its general partner

                           By:      BVF Inc., its general partner

                                    By: /s/ Mark N. Lampert
                                       ---------------------------------
                                            Mark N. Lampert
                                            President

                  BIOTECHNOLOGY VALUE FUND II, L.P.

                  By:      BVF Partners L.P., its general partner

                           By:      BVF Inc., its general partner

                                    By: /s/ Mark N. Lampert
                                       ----------------------------------
                                            Mark N. Lampert
                                            President

                  BVF PARTNERS L.P.

                  By:      BVF Inc., its general partner

                           By: /s/ Mark N. Lampert
                              --------------------------------
                                    Mark N. Lampert
                                    President

                  BVF INC.

                  By: /s/ Mark N. Lampert
                     -----------------------------------
                           Mark N. Lampert
                           President


<PAGE>

                                                                    EXHIBIT 99A


                        AGREEMENT REGARDING JOINT FILING

         The undersigned, Biotechnology Value Fund, L.P., a Delaware limited
partnership, Biotechnology Value Fund II, L.P., a Delaware limited
partnership, BVF Partners L.P., a Delaware limited partnership, and BVF Inc.,
a Delaware corporation, hereby agree and acknowledge that the information
required by Schedule 13G, to which this Agreement is attached as an exhibit,
is filed on behalf of each of them. The undersigned further agree that any
amendments or supplements thereto shall also be filed on behalf of each of
them.

Dated:   April 14, 2000

                  BIOTECHNOLOGY VALUE FUND, L.P.

                  By:      BVF Partners L.P., its general partner

                           By:      BVF Inc., its general partner

                                    By: /s/ Mark N. Lampert
                                       --------------------------------
                                            Mark N. Lampert
                                            President

                  BIOTECHNOLOGY VALUE FUND II, L.P.

                  By:      BVF Partners L.P., its general partner

                           By:      BVF Inc., its general partner

                                    By: /s/ Mark N. Lampert
                                       -------------------------------
                                            Mark N. Lampert
                                            President

                  BVF PARTNERS L.P.

                  By:      BVF Inc., its general partner

                           By: /s/ Mark N. Lampert
                              -------------------------------
                                    Mark N. Lampert
                                    President

                  BVF INC.

                  By: /s/ Mark N. Lampert
                     --------------------------------
                           Mark N. Lampert
                           President



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