SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    --------

                                    FORM 6-K

                        REPORT OF FOREIGN PRIVATE ISSUER
                      PURSUANT TO RULE 13a-16 OR 15d-16 OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                          For the month of April, 2003

                                  Serono S.A.
                     --------------------------------------
                              (Registrant's Name)

                            15 bis, Chemin des Mines
                                Case Postale 54
                                CH-1211 Geneva 20
                                  Switzerland
                     --------------------------------------
                    (Address of Principal Executive Offices)

                                    1-15096
                     --------------------------------------
                              (Commission File No.)

     (Indicate by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F.)

     Form 20-F  X    Form 40-F
               ---            ---

     (Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101 (b)(1).)
                                                         ---

     (Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101 (b)(7).)
                                                         ---

     (Indicate by check mark whether the registrant by furnishing the
information contained in this form is also thereby furnishing the information to
the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of
1934.)

     Yes       No  X
         ---      ---

     (If "Yes" is marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2(b): 82-   )
                                                 ---



--------------------------------------------------------------------------------
The  original  version  of  the  convocation  to the Ordinary General Meeting of
Shareholders  of  Serono  S.A.  is  the French version which is published in the
April  14,  2003  edition of the Swiss Official Gazette. This document is a free
translation  of  the  original  French  version.
--------------------------------------------------------------------------------

                                     SERONO
                               [GRAPHIC OMITTED]

                          SERONO S.A., COINSINS (VAUD)
               The shareholders of SERONO S.A. are invited to the

                    ORDINARY GENERAL MEETING OF SHAREHOLDERS

ON TUESDAY, MAY 6, 2003 AT THE PALAIS DE BEAULIEU, ROOM ROM, IN LAUSANNE AT 2 PM
                            (doors open at 1.30 pm)

                                     AGENDA

1.   ANNUAL REPORT, ACCOUNTS OF SERONO S.A., CONSOLIDATED ACCOUNTS OF THE SERONO
     GROUP,  AUDITORS'  REPORTS
     The  Board  of  Directors  proposes  the approval of the Annual Report, the
     Accounts  of  Serono  S.A.  for  the  year 2002 as well as the Consolidated
     Accounts  of  the  Serono  group  for  the  year  2002.

2.   DISTRIBUTION  OF  PROFITS  IN  THE 2002 BALANCE SHEET AND DIVIDEND PROPOSAL
     Profit  in  the  2002  balance  sheet
     Net  profit  for  the  year  2002                          CHF 262,520,910
     Profit  brought  forward  from  previous  year             CHF 715,575,994
     Transfer  to  reserve  for  treasury shares               (CHF 174,449,063)
                                                               -----------------
                                                                CHF 803,647,841

     The Board of Directors proposes to distribute the profits as follows:
     (a)  Dividend of
     CHF  2.80  gross  on  each  registered
     "A"  share  with  a  par  value  of  CHF  10
     and  of  CHF  7.00  gross  on  each  bearer
     "B"  share  with  a  par  value  of  CHF  25              (CHF 110,770,268)
                                                               -----------------
     (b)  Carried forward                                       CHF 692,877,573

3.   DISCHARGE TO THE BOARD OF DIRECTORS AND THE MANAGEMENT
     The  Board  of  Directors proposes granting discharge to the members of the
     Board  of  Directors  and  the  Management  in relation to their activities
     during  the  financial  year  2002.

4.   ELECTIONS
     4.1  BOARD OF DIRECTORS
          The  Board  of  Directors proposes the re-election for one year of Mr.
          Ernesto Bertarelli, Mr. Pierre E. Douaze, Mr. Bernard Mach, Mr. Sergio
          Marchionne,  Mr.  Georges  Muller, Mr. Jacques Theurillat and Mr. Hans
          Thierstein.



     4.2  AUDITORS
          The  Board  of  Directors  proposes  the  re-election  of
          PricewaterhouseCoopers  S.A.  in  Geneva  as  auditors  of  the annual
          accounts  of  Serono S.A. and as auditors of the consolidated accounts
          of  the  Serono  group  for  the  financial  year  2003.
     4.3  SPECIAL AUDITORS
          The  Board of Directors proposes the re-election of Ernst & Young S.A.
          in  Geneva  as  special auditors in the meaning of article 28.5 of the
          Articles  of  Association  for  a  term  expiring  at  the date of the
          ordinary  general  meeting  in  2004.

The  annual  report,  the  accounts  of  Serono  S.A.  for  the  year  2002, the
consolidated  accounts  of  the  Serono  group for the year 2002, as well as the
auditors'  reports,  will  be  available for the inspection of shareholders from
April  14,  2003,  at  the  management office of Serono S.A. at 15bis chemin des
Mines, 1202 Geneva and at the banks indicated below. These documents can also be
inspected  on  the  company's Internet site (www.serono.com) from the same date.
                                             ---------------
From  this  date,  the company will also send these documents to any shareholder
who  requests  them.

ADMISSION TICKETS FOR THE GENERAL MEETING
HOLDERS  OF  REGISTERED  SHARES  will  receive  their  invitation to the General
Meeting  by  mail, including admission ticket and the documents mentioned above.
Only  the  holders  of  registered shares entered in the share register with the
right  to  vote  at April 16, 2003 may exercise the right to vote in relation to
these  shares.

HOLDERS  OF  BEARER  SHARES  who  wish  to  attend  the General Meeting or to be
represented  there  are invited to obtain their admission ticket and voting card
before  May  1, 2003 from the secretary to the Board of Directors at the address
mentioned  above,  or from one of the banks mentioned below, against blockage of
their  shares with a bank or deposit of their shares at the company's management
office  until  the  end  of  the  General  Meeting.

UBS SA           Lombard Odier Darier Hentsch & Cie     Vaudoise Cantonal Bank
Credit Suisse               Pictet & Cie                Gothard Bank

REPRESENTATION AT THE GENERAL MEETING
Shareholders may be represented at the General Meeting by a third party by means
of the power of attorney on the reverse of the admission ticket.

In addition, each shareholder may be represented by:

-    his/her bank as depositary representative;
-    the organs of the company;
-    Me Yves Rattaz, notary in Morges, as independent representative within the
     meaning of article 689c CO.

Powers  of  attorney  addressed to the company signed in blank will be passed to
the  independent  representative.  IN THE ABSENCE OF VOTING INSTRUCTIONS, VOTING
RIGHTS  SHALL  BE EXERCISED IN FAVOR OF THE PROPOSALS OF THE BOARD OF DIRECTORS.

The  company's  organs  may  represent  only  those shareholders who approve the
proposals  of the Board of Directors. Powers of attorney containing instructions
to  vote  against  the proposals of the Board of Directors will be passed to the
independent  representative.

Depositary  representatives  of shares within the meaning of article 689d CO are
requested to  communicate as soon as possible (but at the latest on May 6 at the
ticket  check  at  the entrance to the Meeting) to the secretary to the Board of
Directors,  at the address mentioned above, the number of shares they represent.



Establishments  subject to the law on banks and savings banks of 8 November 1934
and professional asset managers are considered to be depositary representatives.

The  minutes  of the decisions taken by the General Meeting will be available to
shareholders for inspection at the management office of Serono S.A. from May 12,
2003.

Coinsins, April 14, 2003                  SERONO S.A.

                                          For the Board of Directors

                                          Chairman: Georges Muller
                                          Secretary: Francois Naef



--------------------------------------------------------------------------------
The  original  version  of  the  convocation  to the Ordinary General Meeting of
Shareholders  of  Serono  S.A.  is  the French version which is published in the
April  14,  2003  edition of the Swiss Official Gazette. This document is a free
translation  of  the  original  version and has been adapted for holders of ADSs
whose  accounts  are  managed by the depositary of the ADSs program, the Bank of
New  York.
--------------------------------------------------------------------------------

                                     SERONO
                               [GRAPHIC OMITTED]

                          SERONO S.A., COINSINS (VAUD)
               The shareholders of SERONO S.A. are invited to the

                    ORDINARY GENERAL MEETING OF SHAREHOLDERS

ON TUESDAY, MAY 6, 2003 AT THE PALAIS DE BEAULIEU, ROOM ROM, IN LAUSANNE AT 2 PM
                            (doors open at 1.30 pm)

                                     AGENDA

1.   ANNUAL REPORT, ACCOUNTS OF SERONO S.A., CONSOLIDATED ACCOUNTS OF THE SERONO
     GROUP,  AUDITORS'  REPORTS
     The  Board  of  Directors  proposes  the approval of the Annual Report, the
     Accounts  of  Serono  S.A.  for  the  year 2002 as well as the Consolidated
     Accounts  of  the  Serono  group  for  the  year  2002.

2.   DISTRIBUTION  OF  PROFITS  IN  THE 2002 BALANCE SHEET AND DIVIDEND PROPOSAL
     Profit in the 2002 balance sheet
     Net  profit  for  the  year  2002                          CHF 262,520,910
     Profit  brought  forward  from  previous  year             CHF 715,575,994
     Transfer  to  reserve  for  treasury shares               (CHF 174,449,063)
                                                                ----------------
                                                                CHF 803,647,841

     The Board of Directors proposes to distribute the profits as follows:
     (a)  Dividend of
     CHF 2.80 gross on each registered
     "A" share with a par value of CHF 10
     and of CHF 7.00 gross on each bearer
     "B"  share  with  a  par  value  of  CHF  25              (CHF 110,770,268)
                                                               -----------------
     (b)  Carried  forward                                      CHF 692,877,573

3.   DISCHARGE TO THE BOARD OF DIRECTORS AND THE MANAGEMENT
     The  Board  of  Directors proposes granting discharge to the members of the
     Board  of  Directors  and  the  Management  in relation to their activities
     during  the  financial  year  2002.

4.   ELECTIONS
     4.1  BOARD  OF  DIRECTORS
          The  Board  of  Directors proposes the re-election for one year of Mr.
          Ernesto Bertarelli, Mr. Pierre E. Douaze, Mr. Bernard Mach, Mr. Sergio
          Marchionne,  Mr.  Georges  Muller, Mr. Jacques Theurillat and Mr. Hans
          Thierstein.



     4.2  AUDITORS
          The  Board  of  Directors  proposes  the  re-election  of
          PricewaterhouseCoopers  S.A.  in  Geneva  as  auditors  of  the annual
          accounts  of  Serono S.A. and as auditors of the consolidated accounts
          of  the  Serono  group  for  the  financial  year  2003.
     4.3  SPECIAL  AUDITORS
          The  Board of Directors proposes the re-election of Ernst & Young S.A.
          in  Geneva  as  special auditors in the meaning of article 28.5 of the
          Articles  of  Association  for  a  term  expiring  at  the date of the
          ordinary  general  meeting  in  2004.

The  annual  report,  the  accounts  of  Serono  S.A.  for  the  year  2002, the
consolidated  accounts  of  the  Serono  group for the year 2002, as well as the
auditors'  reports,  will  be  available  for the inspection of shareholders and
holders  of ADSs from April 14, 2003, at the management office of Serono S.A. at
15bis  chemin  des  Mines,  1202 Geneva and at The Bank of New York, 101 Barclay
Street,  22 W, New York, NY 10286 (contact person is Mr. Ricardo Marine (tel.: +
1  212  815  4963 / fax: + 1 212 815 3050 / e-mail: rmarine@bankofny.com). These
documents  can also be inspected on the company's Internet site (www.serono.com)
                                                                 ---------------
from  the  same  date. From this date, the company and The Bank of New York will
also  send  these  documents  to  any shareholder or holder of ADSs who requests
them.

The  votes  of  holders of ADSs will be cast at the General Meeting on behalf of
holders  of  ADSs  by  the depositary of the ADSs program, The Bank of New York.

The  minutes  of the decisions taken by the General Meeting will be available to
shareholders  and  holders  of  ADSs  for inspection at the management office of
Serono  S.A.  from  May  12,  2003.

Coinsins, April 14, 2003                           SERONO S.A.
                                                   For the Board of Directors

                                                   Chairman: Georges Muller
                                                   Secretary: Francois Naef



--------------------------------------------------------------------------------
The  original  version  of  the  convocation  to the Ordinary General Meeting of
Shareholders  of  Serono  S.A.  is  the French version which is published in the
April  14,  2003  edition of the Swiss Official Gazette. This document is a free
translation of the original version and has been adapted for the Serono Employee
Share Purchase Plan beneficiaries (shareholders and ADSs holders) whose accounts
are  managed  by  Mourant  &  Co  Capital  Trustees  Limited.
--------------------------------------------------------------------------------

                                     SERONO
                               [GRAPHIC OMITTED]

                          SERONO S.A., COINSINS (VAUD)
               The shareholders of SERONO S.A. are invited to the

                    ORDINARY GENERAL MEETING OF SHAREHOLDERS

ON TUESDAY, MAY 6, 2003 AT THE PALAIS DE BEAULIEU, ROOM ROM, IN LAUSANNE AT 2 PM
                            (doors open at 1.30 pm)

                                     AGENDA

1.   ANNUAL REPORT, ACCOUNTS OF SERONO S.A., CONSOLIDATED ACCOUNTS OF THE SERONO
     GROUP,  AUDITORS'  REPORTS
     The  Board  of  Directors  proposes  the approval of the Annual Report, the
     Accounts  of  Serono  S.A.  for  the  year 2002 as well as the Consolidated
     Accounts  of  the  Serono  group  for  the  year  2002.

2.   DISTRIBUTION OF PROFITS IN THE 2002 BALANCE SHEET AND DIVIDEND PROPOSAL
     Profit in the 2002 balance sheet
     Net profit for the year 2002                       CHF 262,520,910
     Profit  brought  forward  from  previous  year     CHF 715,575,994
     Transfer  to  reserve  for  treasury  shares      (CHF 174,449,063)
                                                       -----------------
                                                        CHF 803,647,841
     The  Board  of  Directors  proposes  to  distribute the profits as follows:
     (a)  Dividend of
     CHF 2.80 gross on each registered
     "A" share with a par value of CHF 10
     and of CHF 7.00 gross on each bearer
     "B" share with a par value of CHF 25              (CHF 110,770,268)
                                                       -----------------
      (b)  Carried forward                              CHF 692,877,573

3.   DISCHARGE TO THE BOARD OF DIRECTORS AND THE MANAGEMENT
     The  Board  of  Directors proposes granting discharge to the members of the
     Board  of  Directors  and  the  Management  in relation to their activities
     during  the  financial  year  2002.

4.   ELECTIONS
     4.1  BOARD OF DIRECTORS
          The  Board  of  Directors proposes the re-election for one year of Mr.
          Ernesto Bertarelli, Mr. Pierre E. Douaze, Mr. Bernard Mach, Mr. Sergio
          Marchionne,  Mr.  Georges  Muller, Mr. Jacques Theurillat and Mr. Hans
          Thierstein.



     4.2  AUDITORS
          The  Board  of  Directors  proposes  the  re-election  of
          PricewaterhouseCoopers  S.A.  in  Geneva  as  auditors  of  the annual
          accounts  of  Serono S.A. and as auditors of the consolidated accounts
          of  the  Serono  group  for  the  financial  year  2003.
     4.3  SPECIAL  AUDITORS
          The  Board of Directors proposes the re-election of Ernst & Young S.A.
          in  Geneva  as  special auditors in the meaning of article 28.5 of the
          Articles  of  Association  for  a  term  expiring  at  the date of the
          ordinary  general  meeting  in  2004.

The  annual  report,  the  accounts  of  Serono  S.A.  for  the  year  2002, the
consolidated  accounts  of  the  Serono  group for the year 2002, as well as the
auditors'  reports,  will  be  available  for the inspection of shareholders and
holders  of ADSs from April 14, 2003, at the management office of Serono S.A. at
15bis  chemin  des  Mines, 1202 Geneva as well as at Mourant Equity Compensation
Solutions, PO Box 1310, 5th floor, Mondial House, 102 George Street, Croydon CR9
1TQ,  England (contact person is Daniel Cannon, tel: + 44 (0)208 667 4007 / fax:
+  44  (0)208 667 4111 / e-mail: Daniel.Cannon@mourant.com). These documents can
also  be inspected on the company's Internet site (www.serono.com) from the same
                                                   --------------
date. From this date, the company and Mourant Equity Compensation Solutions will
also  send  these  documents  to  any shareholder or holder of ADSs who requests
them.

The  votes  of shareholders and the votes of holders of ADSs will be cast at the
General  Meeting  on their behalf by Mourant & CO Capital Trustees Limited or by
the  shareholders  themselves  should  the  latter  wish  to  attend the General
Meeting.

The  minutes  of the decisions taken by the General Meeting will be available to
shareholders  and  holders  of  ADSs  for inspection at the management office of
Serono  S.A.  from  May  12,  2003.

Coinsins, April 14, 2003                           SERONO S.A.

                                                   For the Board of Directors

                                                   Chairman: Georges Muller
                                                   Secretary: Francois Naef



FREE TRANSLATION                                     [ ]   Registered shares A
[GRAPHIC OMITTED]  SERONO S.A.                       [ ]   Bearer shares B
                   Coinsins (Vaud)               -------------------------------
                                                           Total
ADMISSION CARD
--------------------------------------------------------------------------------
                     Shareholder
 _                                                _
|                                                  |


|_                                                _|

Invitation and Admission card to the
ORDINARY GENERAL MEETING
of our company on

Tuesday 06 May 2003 at 2pm
in Palais de Beaulieu, Lausanne.



                        Please do not detach this section


     Serono S.A., Ordinary General Meeting on 06.05.2003

                                  Mr. Ernesto Bertarelli
                                  Mr.  Pierre E. Douaze
                                  Mr.  Bernard Mach
7     Elections                   Mr.  Sergio Marchionne
      to the Board of directors   Mr.  Georges Muller
                                  Mr.  Jacques Theurillat
                                  Mr.  Hans Thierstein


If you vote in favor of the proposal, please write "yes" in the box;
if you vote against the proposal, please write "no" in the box.        [    ]

              Ballot paper                    Number of votes          [    ]


If you vote in favor of the proposal, please write "yes" in the box;
if you vote against the proposal, please write "no" in the box.        [    ]

6             Ballot paper                    Number of votes          [    ]


If you vote in favor of the proposal, please write "yes" in the box;
if you vote against the proposal, please write "no" in the box.        [    ]

5             Ballot paper                    Number of votes          [    ]


If you vote in favor of the proposal, please write "yes" in the box;
if you vote against the proposal, please write "no" in the box.        [    ]

4             Ballot paper                    Number of votes          [    ]


If you vote in favor of the proposal, please write "yes" in the box;
if you vote against the proposal, please write "no" in the box.        [    ]

3             Ballot paper                    Number of votes          [    ]


If you vote in favor of the proposal, please write "yes" in the box;
if you vote against the proposal, please write "no" in the box.        [    ]

2             Ballot paper                    Number of votes          [    ]


If you vote in favor of the proposal, please write "yes" in the box;
if you vote against the proposal, please write "no" in the box.        [    ]

1             Ballot paper                    Number of votes          [    ]



POWER  OF  ATTORNEY

I/we hereby empower

                               (name of attorney)

to represent me/us at the Ordinary General Meeting of Shareholders of Serono
S.A.


                                    (date)

Signature:


Article 16 of the Articles of Association: Every holder of registered shares may
arrange to have all or any of its shares represented by another person, who must
be  in  possession  of  a  written  proxy  form.

To hand in directly to the attorney.


Please do not detach this section



7


6     Serono S.A.
      Ordinary General Meeting 06.05.2003


5     Serono S.A.
      Ordinary General Meeting 06.05.2003


4     Serono S.A.
      Ordinary General Meeting 06.05.2003


3     Serono S.A.
      Ordinary General Meeting 06.05.2003


2     Serono S.A.
      Ordinary General Meeting 06.05.2003


1     Serono S.A.
      Ordinary General Meeting 06.05.2003








                  \/         DETACH PROXY CARD HERE         \/
--------------------------------------------------------------------------------

[ ]   Mark,  Sign,  Date  and  Return
      the  Proxy  Card  Promptly                  Votes must be indicated [X]
      Using  the  Enclosed  Envelope.             in Black or Blue ink.

                                                                  FOR   AGAINST
1.  Annual Report, Accounts of Serono S.A.,
    Consolidated  Accounts  of  the  Serono  group,
    Auditors  Reports                                             [ ]     [ ]

2.  Distribution of profits in the 2002 balance sheet
    and  dividend  proposal                                       [ ]     [ ]

3.  Discharge to the Board of Directors and the
    Management                                                    [ ]     [ ]

4.  Elections                                                     [ ]     [ ]

    4.1  Board  of  Directors                                     [ ]     [ ]

    4.2  Auditors                                                 [ ]     [ ]

    4.3  Special  auditors                                        [ ]     [ ]


                                    SCAN LINE

The  Voting  Instruction must be signed by the person in whose name the relevant
Receipt  is  registered  on  the  books  of  the  Depositary.  In  the case of a
Corporation,  the  Voting  Instruction  must  be  executed  by a duly authorized
Officer  or  Attorney.

Date     Share Owner sign here      Co-Owner sign here
-------  -------------------------  ---------------------------------






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

                                  SERONO S.A.

              INSTRUCTIONS TO THE BANK OF NEW YORK, AS DEPOSITARY
      (MUST BE RECEIVED PRIOR TO THE CLOSE OF BUSINESS ON APRIL 29, 2003)

     The  undersigned  registered  holder  of  American  Depositary  Receipts
(Receipts) hereby requests and instructs The Bank of New York, as Depositary, to
endeavor,  insofar  as  practicable,  to vote or cause to be voted the amount of
Shares  or  other  Deposited  Securities  represented by the American Depositary
Shares  evidenced  by  such Receipt(s) of SERONO S.A., registered in the name of
the undersigned on the books of the Depositary as of the close of business March
28,  2003  at  the  Ordinary General Meeting of SERONO S.A. to be held on May 6,
2003,  in  respect  of  the  resolutions  specified  on  the  reverse  hereof.

NOTES:

1.   INSTRUCTIONS  AS TO VOTING ON THE SPECIFIED RESOLUTIONS SHOULD BE INDICATED
     BY AN "X" IN THE APPROPRIATE BOX. IT IS UNDERSTOOD THAT, IF NO INSTRUCTIONS
     ARE  RECEIVED  BY  THE DEPOSITARY FROM ANY OWNER WITH RESPECT TO ANY OF THE
     DEPOSITED  SECURITIES  REPRESENTED  BY  THE  AMERICAN  DEPOSITARY  SHARES
     EVIDENCED  BY  SUCH  OWNERS  RECEIPTS  ON  OR  BEFORE  APRIL  29, 2003, THE
     DEPOSITARY  SHALL  DEEM  SUCH  OWNER  TO  HAVE  GIVEN  THE  DEPOSITARY  AN
     INSTRUCTION  TO  VOTE  OR  CAUSE  TO  BE VOTED SUCH DEPOSITED SECURITIES IN
     ACCORDANCE WITH THE PROPOSALS OF THE COMPANYS BOARD OF DIRECTORS IN RESPECT
     OF  THE  MATTERS  TO  BE  VOTED  UPON.


To change your address, please mark this box.     [ ]

To include any comments, please mark this box.    [ ]

 Please complete and date this proxy on the reverse side and return it promptly
                          in the accompanying envelope.



                                                                Mourant
                                                               [GRAPHIC OMITTED]



Title Name Surname
Address1
Address2
Address 3
Address 4
Address 5
Address 6

Participant  ID  Number  :
--------------------------

SERONO EMPLOYEE SHARE PURCHASE PLAN
ORDINARY GENERAL MEETING OF SHAREHOLDERS OF SERONO S.A., TUESDAY 6 MAY 2003
VOTING INSTRUCTION FORM

I hereby instruct the Plan Administrator, Mourant & Co. Capital Trustees
Limited, to vote my shares on my behalf as instructed below:

VOTING INSTRUCTIONS

Please check (X) the appropriate box

[ ]   I vote for all Board proposals. If checked you need NOT complete the
      Specific Voting Instructions below.

[ ]   I do NOT vote for all Board proposals and instead specify my VOTING
      INSTRUCTIONS BELOW.


SPECIFIC VOTING INSTRUCTIONS

AGENDA ITEM NUMBER                          PLEASE CHECK (X) THE APPROPRIATE BOX
                                                               FOR       AGAINST

1    Annual Report, Accounts of Serono S.A. and
     Consolidated Accounts of the Serono group for the year
     2002; Auditors' Reports                                   [ ]         [ ]

2    Distribution of profits in the 2002 balance sheet and
     dividend proposal                                         [ ]         [ ]

3    Discharge to the Board of Directors and the
     Management                                                [ ]         [ ]

4    Elections
     4.1 Board of Directors                                    [ ]         [ ]

     4.2 Auditors                                              [ ]         [ ]

     4.3 Special auditors                                      [ ]         [ ]

SHOULD YOU WISH TO EXERCISE YOUR RIGHT TO INSTRUCT THE PLAN ADMINISTRATOR TO
VOTE ON YOUR BEHALF, PLEASE ENSURE THAT YOU COMPLETE AND RETURN THIS VOTING
INSTRUCTION FORM VIA FAX ONLY, ENSURING THAT MOURANT RECEIVES IT NO LATER THAN
                 ------------
5PM (UK TIME) ON MONDAY 28 APRIL 2003. THE FAX NUMBER TO USE IS:

                              +44 (0) 208 667 4111

SIGNED.......................................

DATED.................................                                       215



                                   SIGNATURES

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


                                                 SERONO S.A.
                                                 a Swiss corporation
                                                 (Registrant)


April 14, 2003                         By:       /s/ Allan Shaw
                                                 -------------------------------
                                                 Name:  Allan Shaw
                                                 Title: Chief Financial Officer