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 October, 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-______)



                                                                          SERONO


Media  Release

FOR  IMMEDIATE  RELEASE
-----------------------


  EUROPEAN COMMISSION APPROVES SERONO'S OVITRELLE(R) SOLUTION FOR INJECTION IN A
                PRE-FILLED SYRINGE FOR TREATMENT OF INFERTILITY

 OVITRELLE(R) - THE WORLD'S ONLY RECOMBINANT, FILLED-BY-MASS AND CONSISTENT HCG
 IS NOW AVAILABLE IN A READY-TO-USE PRE-FILLED SYRINGE THAT WILL ALLOW PATIENTS
                     TO ADMINISTER HCG WITH ONE SIMPLE STEP

GENEVA, SWITZERLAND, OCTOBER 30, 2003 - Serono S.A. (virt-x: SEO and NYSE: SRA),
announced  today  that  the  European Commission has approved its new pre-filled
syringe  for  Ovitrelle(R)  (choriogonadotropin  alfa).

Designed to make infertility treatment easier for patients, the new Ovitrelle(R)
Solution  for  Injection is designed so that patients can administer their r-hCG
in  one single step.  Unlike other hCG treatments, the Ovitrelle(R) Solution for
Injection  does not require patients to mix medication prior to injection. It is
also  the  only  available  recombinant  version of human chorionic gonadotropin
(hCG),  one  of  three  hormones  required  to  treat  infertility.  Essentially
equivalent  in  structure  to  naturally  occurring  hCG,  Ovitrelle(R) triggers
ovulation  in  women  being  treated  for  infertility.

"hCG  administration  is  a single, once only injection and therefore getting it
right  is  essential  to the success of the cycle," said Professor Matts Wikland
M.D,  PhD  of the Fertility Center at Carlanderska Hospital, Gothenburg, Sweden.
"Having  Ovitrelle(R) as a liquid in a ready to use pre-filled syringe will make
the  process  significantly  easier for patients and help to ensure that they do
not incorrectly reconstitute or administer this crucial injection."

The  new  pre-filled  syringe  for  Ovitrelle(R) will continue to carry the same
indication  as  the  currently  marketed  product  for  triggering ovulation and
luteinization  in  women  undergoing  infertility  treatment.

"We  are  extremely  pleased  that  the  European  Commission  has  approved the
Ovitrelle(R)  Solution  for  Injection  in  a  pre-filled  syringe,"  said  Hans
Christian Rohde, Corporate Vice President, Reproductive Health, Serono.  "We are
constantly  striving  to  introduce  the most consistent products and to deliver
them  in  the most accurate devices to help to increase the treatment efficiency
in  assisted  cycles."


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Serono expects Ovitrelle(R) Solution for Injection in a pre-filled syringe to be
available  in  December,  replacing  the  currently  available  powder  form  of
Ovitrelle(R).

ADDITIONAL  PRODUCT  INFORMATION
Ovitrelle(R)  is  one of a complete line of widely prescribed Serono infertility
therapies  used  to promote follicle growth, ovulation and maturation of eggs in
the  ovaries  of women undergoing assisted reproductive technologies (ART), such
as in vitro fertilization, and to induce ovulation in women with infertility due
to  anovulation.

Infertility  is  defined as the inability of a couple to achieve pregnancy after
one  year  of  regular, unprotected intercourse (six months if the woman is over
35).  It  affects  about  10 million Europeans, representing about 10 percent of
couples  in  their  childbearing  years.  Infertility  is  just  as likely to be
related  to male factors as female factors, which each account for about a third
of  infertility  problems.  The remaining third are either a combination of male
and  female  factors  or  are  unexplained.

SERONO  AND  INFERTILITY  TREATMENT
Serono,  the  world  leader  in  reproductive  health, is dedicated to providing
patient-friendly,  innovative products to help couples build families. Serono is
the only company to offer a full portfolio of fertility drugs for every stage of
the  reproductive cycle and recombinant versions of the three hormones needed to
treat  infertility:  Gonal-f(R)  FbM  (follitropin  alfa  for  injection
filled-by-mass), to stimulate the ovaries and produce eggs; Luveris(R) (lutropin
alfa  for  injection),  to  stimulate  follicular  development  in women who are
profoundly  LH  deficient;  Cetrotide(R)  (cetrorelix  acetate for injection) to
control  hormonal  surges; Ovitrelle(R) (choriogonadotropin alfa for injection),
to help follicles mature and release eggs; and Crinone(R) (progesterone gel), to
help  establish  and  maintain  a  pregnancy.

For  more  information  on  infertility  and  full  prescribing  information for
Serono's marketed fertility products visit www.serono.com.
                                           --------------

                                       ###

Some  of  the  statements  in  this  press  release  are  forward  looking. Such
statements  are inherently subject to known and unknown risks, uncertainties and
other  factors  that  may  cause  actual results, performance or achievements of
Serono  S.A.  and  affiliates  to be materially different from those expected or
anticipated  in  the  forward-looking statements. Forward-looking statements are
based on Serono's current expectations and assumptions, which may be affected by
a  number  of  factors, including those discussed in this press release and more
fully  described  in  Serono's  Annual  Report  on Form 20-F filed with the U.S.
Securities and Exchange Commission on April 17, 2003.  These factors include any
failure  or  delay  in  Serono's ability to develop new products, any failure to
receive  anticipated  regulatory  approvals,  any  problems  in  commercializing
current  products  as  a  result of competition or other factors, our ability to
obtain  reimbursement  coverage  for  our  products,  and government regulations
limiting  our  ability  to  sell  our  products. Serono has no responsibility to
update the forward-looking statements contained in this press release to reflect
events or circumstances occurring after the date of this press release.

                                       ###


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ABOUT  SERONO

Serono  is  a  global  biotechnology  leader.  The  Company  has six recombinant
products  on  the  market,  Gonal-f(R),  Luveris(R),  Ovidrel(R)/Ovitrelle(R),
Rebif(R),  Serostim(R) and Saizen(R) (Luveris(R) is not approved in the USA). In
addition  to  being  the  world leader in reproductive health, Serono has strong
market  positions  in  neurology,  metabolism and growth. The Company's research
programs  are  focused  on  growing  these  businesses  and  on establishing new
therapeutic  areas.  Currently,  there  are  over  30  projects  in development.

Serono  was  awarded the International James D. Watson Helix 2003 Award from the
Biotechnology  Industry  Organization  (BIO)  in  recognition  of  the Company's
outstanding  leadership  and  highest  standards  of  scientific  and  product
achievement.

In  2002,  Serono  achieved  worldwide  revenues of US$ 1.538 billion, and a net
income  of  US$321  million,  making it the third largest biotech company in the
world.  The  Company  operates  in 44 countries, and its products are sold in 94
countries.  Bearer shares of Serono S.A., the holding company, are traded on the
virt-x (SEO) and its American Depositary Shares are traded on the New York Stock
Exchange  (SRA).



FOR MORE INFORMATION, PLEASE CONTACT:

     SERONO IN GENEVA, SWITZERLAND:
     MEDIA RELATIONS:                INVESTOR RELATIONS:
     Tel:  +41-22-739 36 00          Tel:  +41-22-739 36 01
     Fax:  +41-22-739 30 85          Fax:  +41-22-739 30 22
     http://www.serono.com           Reuters: SEOZ.VX / SRA.N
     ---------------------
                                     Bloomberg: SEO VX / SRA
                                     US

     SERONO, INC., ROCKLAND, MA
     MEDIA RELATIONS:                INVESTOR RELATIONS:
     Tel.  +1 781 681 2340           Tel.  +1 781 681 2552
     Fax:  +1 781 681 2935           Fax:  +1 781 681 2912
     http://www.seronousa.com
     ------------------------


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                                   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)



October 30, 2003                   By:     /s/  Allan  Shaw
                                           -------------------
                                   Name:   Allan  Shaw
                                   Title:  Chief  Financial  Officer