BIOGEN INC
S-3, 1999-02-03
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
Previous: COMPAQ COMPUTER CORP, 4, 1999-02-03
Next: BIOGEN INC, S-8 POS, 1999-02-03



As filed with the Securities and Exchange Commission on February 3, 1999.       
                                                      Registration No. 333-_____
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933
                                  Biogen, Inc.
             (Exact name of registrant as specified in its charter)
        Massachusetts                                       04-3002117
(State or other jurisdiction                           (I.R.S. Employer
of incorporatin or organization)                       Identification Number)
                               14 Cambridge Center
                         Cambridge, Massachusetts 02142
                                 (617) 679-2000
       (Address,  including zip code, and telephone number, including area code,
                  of registrant's principal executive offices)
                             Michael J. Astrue, Esq.
                        Vice President - General Counsel
                                  Biogen, Inc.
                               14 Cambridge Center
                         Cambridge, Massachusetts 02142
                                 (617) 679-2000
                     (Name, address, including zip code, and 
                     telephone number, including area code, 
                              of agent for service)
                                 With a copy to:
                             Peter S. Lawrence, Esq.
               Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
                              One Financial Center
                           Boston, Massachusetts 02111
                                 (617) 542-6000
                  Approximate date of commencement of proposed
               sale to the public: As soon as practical after this
                    Registration Statement becomes effective.

     If the only securities being registered on this Form are being offered 
pursuant to dividend or interest reinvestment plans, please check the following 
box.                                                                            
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933 other than securities  offered only in connection with dividend or interest
reinvestment, check the following box.                                      _X_ 
     If this Form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering.         
   If this Form is a  post-effective  amendment  filed  pursuant  to Rule 462(c)
under the Securities Act, check the following box and list the Securities  Act  
registration statement number of the earlier effective registration statement 
for the same offering.                                                          
   If delivery of the  prospectus  is expected to be made  pursuant to Rule 434,
please check the following box.
<TABLE>
                         CALCULATION OF REGISTRATION FEE
<CAPTION>
- --------------------------------------------------------------------------------
Title of Each        Amount to be   Proposed Maximum  Proposed      Amount of
Class of Securities  Registered(1)  Offering Price    Maximum       Registration
to be Registered                    per Share         Aggregate     Fee(3)
                                                      Offering Price
- --------------------------------------------------------------------------------
<S>                  <C>            <C>               <C>           <C>
Common Stock,        417,500        $97(2)            $40,497,500(2)    (3)
$.01 par value              
- --------------------------------------------------------------------------------
<FN>
(1)  Consists of 417,500  shares of common  stock to be issued upon  exercise of
     options and an indeterminate number of additional shares of common stock as
     may from time to time  become  issuable  upon  exercise  of the  options by
     reason of stock splits,  stock  dividends  and other similar  transactions,
     which shares are registered hereunder pursuant to Rule 416.
(2)  Calculated  using the average of the high and low sales  prices of the
     Common Stock of Biogen, Inc. on NASDAQ as of January 29, 1999.
(3)  A Registration  Fee was  previously  paid with  Registration  Statement No.
     33-37312 on Form S-8 and  Registration  Statement No. 33-69174 on Form S-8.
     No additional shares are being registered  hereby.  Pursuant to Rule 429(b)
     of the  Securities  Act of 1933,  the  registration  fee  relating to these
     shares is being transferred to this registration statement and the Form S-8
     will be amended to deregister these shares.
</FN>
</TABLE>
The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further amendment which specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933  or  until  the  Registration  Statement  shall  become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.

<PAGE>
                              RED HERRING LANGUAGE

THE  INFORMATION IN THIS  PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED.  WE MAY
NOT SELL  THESE  SECURITIES  UNTIL THE  REGISTRATION  STATEMENT  FILED  WITH THE
SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER
TO SELL THESE  SECURITIES AND IS NOT SOLICITING AN OFFER TO BUY THESE SECURITIES
IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.

                                   PROSPECTUS

                 Subject to Completion, dated February 2, 1999


                                  BIOGEN, INC.

                         417,500 Shares of Common Stock

     -    The shares offered hereby may be purchased pursuant to the exercise of
          options by a current  option holder which were  transferred  to her by
          one of our officers.  The options were issued to the officer  pursuant
          to the Biogen, Inc. 1985 Non-Qualified Stock Option Plan.

     -    The amount of the  proceeds  we receive  upon  exercise of the options
          will depend upon the  exercise  price of the options and the extent to
          which they are  exercised.  Currently,  117,500 of the options have an
          exercise  price of $22.063 per share,  and 300,000 of the options have
          an exercise price of $26.969 per share.


          Our  common stock trades on the Nasdaq National Stock Market under the
                                 symbol "BGEN."

          On February 1, 1999, the closing sale price of one share of our common
          stock as quoted on the Nasdaq National Stock Market was $96.3125.

          Our  address  is  Biogen,   Inc.,  14  Cambridge  Center,   Cambridge,
          Massachusetts 02142, and our telephone number is (617) 679-2000.

                 This Investment Involves A High Degree of Risk.
       You Should Purchase Shares Only If You Can Afford A Complete Loss.
                     See "Risk Factors" Beginning on Page 3.


       Neither the Securities and Exchange  Commission nor any state  securities
       commission has approved or disapproved of these securities, or determined
       if this  prospectus is truthful or complete.  Any  representation  to the
       contrary is a criminal offense.

                                February __, 1999

<PAGE>

                                    BUSINESS

         Biogen  is a  biopharmaceutical  company  principally  engaged  in  the
business of developing, manufacturing and marketing drugs for human health care.
We currently derive revenues from sales of AVONEX(R)(Interferon Beta-1a) for the
treatment  of  relapsing  forms of  multiple  sclerosis  and  from  sales by our
licensees of a number of products,  including  alpha  interferon and hepatitis B
vaccines and diagnostic  products.  We began  marketing  AVONEX(R) in the United
States in 1996 and in the fifteen  member  countries  of the  European  Union in
1997.  Our  revenues  from sales of AVONEX(R)  in 1998 were  approximately  $395
million.  During 1998,  we also received  approximately  $163 million in royalty
revenue and license fees from our licensees.

         We continue to devote significant resources to our ongoing research and
development  efforts.  We focus our  efforts on areas  where we have  particular
scientific strengths, such as:

         -        multiple sclerosis,
         -        inflammatory diseases,
         -        cardiovascular diseases,
         -        developmental biology, and
         -        gene therapy.

         In 1998,  we  continued  clinical  trials  of  several  of our  product
candidates, including initiation of:

     - a Phase 2b clinical  trial of LFA3TIP in patients with moderate to severe
psoriasis,

     - a Phase 2b study of CVT-124,  a diuretic  being  developed as a potential
treatment for edema associated with congestive heart failure, and

     - a Phase 2 study of humanized 5c8 anti-CD40 ligand monoclonal  antibody in
patients with immune thrombocytopenic purpura.

We have  planned  additional  clinical  trials  of  LFA3TIP,  humanized  5c8 and
CVT-124. We also have ongoing clinical trials related to AVONEX(R). In addition,
we are pursuing early-stage research programs directed toward finding oral small
molecule drug candidates to inhibit certain inflammation pathways as a potential
treatment for multiple sclerosis,  developing novel inhibitors of certain immune
response pathways as potential therapies for several autoimmune diseases such as
inflammatory  bowel  disease  and  arthritis,  exploring  ways to treat  central
nervous system disorders and developing  products for human gene therapy. We are
also  exploring  the  use  of  functional  genomics  technology  to  find  novel
therapeutics.



                                       2
<PAGE>

                                  RISK FACTORS

Investing  in our  common  stock is very  risky.  You  should  be able to bear a
complete  loss of your  investment.  This  prospectus,  including  the documents
incorporated  by reference,  contains  forward-looking  statements  that involve
risks or  uncertainties.  Actual  events or results may differ  materially  from
those  discussed  in  this  prospectus  and in  the  documents  incorporated  by
reference.  Factors that could cause or contribute to such differences  include,
but are not limited to, the factors  discussed  below as well as those discussed
elsewhere in this prospectus and in the documents incorporated by reference.

Dependence on AVONEX(R) Sales and Royalty Revenue

Our ability to sustain  increases in revenues and  profitability  will primarily
depend on our revenues and  profitability  from AVONEX(R)  sales. Our ability to
sustain  profitability  from  sales of  AVONEX(R)  will  depend  on a number  of
factors, including:

          -    continued market acceptance of AVONEX(R) worldwide;

          -    our ability to maintain a high level of patient satisfaction with
               AVONEX(R);

          -    the  nature  of  regulatory  and  pricing  decisions  related  to
               AVONEX(R)  worldwide and the extent to which  AVONEX(R)  receives
               and maintains reimbursement coverage;

          -    market acceptance of AVONEX(R) outside the United States;

          -    successful  resolution  of the lawsuit with Berlex  Laboratories,
               Inc. related to the U.S. "McCormick" patents, which if decided in
               Berlex's  favor  could  have a  material  adverse  effect  on our
               financial position and results of operations;

          -    success  in  revoking  the  European   patents   granted  to  Dr.
               Rentschler  Biotechnologie  GmbH since if the patents  were to be
               upheld  and  if   Rentschler   were  to  obtain,   through  legal
               proceedings, a determination that our sale of AVONEX(R) in Europe
               infringes a valid  Rentschler  patent,  such result  could have a
               material adverse effect on our results of operation and financial
               condition;

          -    our ability to sustain  market share of AVONEX(R) in light of the
               introduction  of  competitive   products  for  the  treatment  of
               multiple sclerosis;

          -    the success of ongoing  development  work related to AVONEX(R) in
               expanded  multiple  sclerosis  indications;  and 

          -    the continued  accessibility of third parties to vial, label, and
               distribute AVONEX(R) on acceptable terms.

We also receive royalty revenues which  contribute  significantly to our overall
profitability.  Our ability to maintain the level of such royalty  revenues will
depend on a number of factors,  including:  sustaining the scope and validity of
existing patents; the efforts of licensees in the clinical testing and marketing
of products from which we derive revenue; and the timing and extent of royalties
from additional licensing opportunities.  In addition, licensee sales levels may
fluctuate  from  quarter to quarter due to the timing and extent of major events
such as new indication approvals or government sponsored vaccination programs.

We cannot assure you that we will achieve a positive outcome with respect to any
of the factors  discussed  in this  Section or that the timing and extent of our
success with respect to any  combination  of these factors will be sufficient to
result in sustained increases in our revenues or profitability.




                                       3
<PAGE>

Competition

We  face  increasing  competition  from  other  products  for the  treatment  of
relapsing forms of multiple sclerosis. AVONEX(R)competes with interferon beta-1b
which is sold in the United States under the brand name  Betaseron(R)  by Berlex
Laboratories,  Inc., a United States  affiliate of Schering AG, Germany,  and is
sold in Europe under the brandname  Betaferon(R) by Schering AG.  AVONEX(R) also
faces   competition   from  Copaxone(R)   glatiramer   acetate  (also  known  as
copolymer-l).  In the United  States,  Copaxone(R)  is marketed by a partnership
between Teva Pharmaceuticals and Hoechst Marion Roussel, Inc. In addition,  Ares
Serono S.A. is selling another  interferon  beta-la product in Europe and Canada
under  the  brand  name  Rebif(R).  Serono is also  seeking  approval  to market
Rebif(R) in the United States but to be approved for relapsing forms of multiple
sclerosis would have to overcome the orphan drug status  afforded  AVONEX(R) and
Betaseron(R)  by the FDA.  We cannot  assure you that we will be able to sustain
our share of the market for the treatment of multiple  sclerosis in light of the
competition from other products.

New Products

AVONEX(R) is currently  the only product we sell.  Our  long-term  viability and
growth will depend on the successful  development and commercialization of other
products from research activities and collaborations.  We continue to expand our
development  efforts  related to other potential  products in our pipeline.  The
expansion  of the  pipeline  may  include  increases  in  spending  on  internal
projects, the acquisition of third party technologies or products or other types
of  investments.  Product  development  involves  a high  degree  of risk.  Many
important  factors affect our ability to successfully  develop and commercialize
drugs,  including  the  ability to obtain and  maintain  necessary  patents  and
licenses, to demonstrate safety and efficacy of drug candidates at each stage of
the clinical  trial  process,  to meet  applicable  regulatory  standards and to
receive  required  regulatory  approvals,   to  be  capable  of  producing  drug
candidates in commercial quantities at reasonable costs, to obtain reimbursement
coverage for the products, to compete successfully against other products and to
market products successfully. We cannot assure you that we will be successful in
our efforts to develop and commercialize new products.

Patents and Other Proprietary Rights

We have numerous issued patents and patent  applications  pending on a number of
our  processes and products.  We have also  obtained  rights to certain  patents
under licenses with third parties which provide for the payment of royalties. We
cannot assure you that our existing patents or others,  if obtained,  will be of
substantial  protection or commercial benefit to us. In addition, we do not know
to what extent  Biogen's  pending  patent  applications  or patent  applications
licensed  from third  parties will be granted or whether any of our patents will
prevail if they are  challenged in  litigation.  Also, we cannot assure you that
third parties will not be granted patents  claiming  subject matter necessary to
our business.

We have granted an exclusive  worldwide license to  Schering-Plough  Corporation
under our alpha interferon patents,  and receive royalties from  Schering-Plough
on sales of its  Intron(R)  A brand of alpha  interferon.  While our U.S.  alpha
interferon patent expires in 2002, under a settlement  agreement entered into in
1998,  Schering-Plough  will pay us certain  sums on U.S.  sales of  Intron(R) A
until the expiration of a patent on a recombinant  form of the alpha  interferon
protein  expected to be issued to F. Hoffman LaRoche,  Inc. and Genentech,  Inc.
The Genentech/Roche  patent is expected to have a term of 17 years from the date
of issue. Schering-Plough's royalty obligation to us on sales of Intron (R) A in
Europe will  terminate  upon the  expiration  of our European  alpha  interferon
patent in 2001,  except that such  obligation will not terminate in France until
2003 and in Italy until 2007.





                                       4
<PAGE>

We  have  licensed  our  recombinant   hepatitis  B  antigen  patent  rights  to
manufacturers  and marketers of hepatitis B vaccines and  diagnostic  test kits,
and receive  royalties on sales of the vaccines and test kits by our  licensees.
The obligation of SmithKline  Beecham  Biologicals s.a. and Merck & Co., Inc. to
pay  royalties on sales of hepatitis B vaccines and the  obligation of our other
licensees  under our hepatitis B patents to pay royalties on sales of diagnostic
products will terminate upon expiration of our existing hepatitis B patents. Our
existing  United  States  hepatitis B patents will expire in 2004.  Our European
hepatitis B patents will expire at the end of 1999, except in those countries in
which we have or are able to obtain  supplemental  protection  certificates.  To
date, we have received supplemental  protection certificates in France, Ireland,
Italy, Luxembourg, The Netherlands, Sweden and Switzerland, and we have a number
of  additional   applications  pending.  The  additional  coverage  afforded  by
supplemental  protection  certificates  ranges from two to six years.  We cannot
assure  you as to the  extent  of  coverage  available  under  the  supplemental
protection  certificates,  or that  protection  will be available in  additional
countries.

There has been,  and we  expect  that  there  may  continue  to be,  significant
litigation in the industry  regarding  patents and other  intellectual  property
rights.  Such  litigation  could  create  uncertainty  and  consume  substantial
resources.

Foreign Exchange Rates

We have operations in several European  countries in connection with the sale of
our product  AVONEX(R).  We also  receive  royalty  revenues  based on worldwide
product sales by our licensees. As a result, our financial position,  results of
operations and cash flows can be affected by  fluctuations  in foreign  currency
exchange rates, primarily the British pound, Eurodollar and Japanese yen. We use
foreign currency forward contracts to manage specifically  identifiable  foreign
currency  risk but do not engage in currency  speculation.  We use these forward
contracts to hedge certain transactions denominated in foreign currencies.

Volatility of Stock Price

The  stock  prices  of  biotechnology  companies  such as ours  are  subject  to
significant fluctuations. Our stock price may be affected by a number of factors
including,  but  not  limited  to  clinical  trial  results  and  other  product
development  events,  the  financial  impact  of  changes  in the  value  of our
investments,  the outcome of litigation,  the decisions relating to intellectual
property  rights and the  entrance  of  competitive  products  into the  market,
changes  in   reimbursement   policies  or  other   practices   related  to  the
pharmaceutical  industry  or other  industry  and market  changes or trends.  In
addition, if our revenues or earnings in any quarter fail to meet the investment
community's  expectations,  there could be an  immediate  adverse  impact on our
stock price.

Product Liability

Products or processes that are or may be developed,  licensed,  manufactured  or
sold by us may expose us to potential liability from claims by end-users of such
products or of products  manufactured using such processes,  or by those selling
such products, either directly or as a component of other products. We also have
potential liability under indemnification  arrangements relating to our clinical
trial programs.  We have obtained limited product liability  insurance coverage.
We cannot  assure you that we will be able to maintain  such  coverage or obtain
additional  coverage on  acceptable  terms,  if at all,  or that such  insurance
coverage will be adequate to protect us against all claims.






                                       5
<PAGE>

Attraction and Retention of Key Personnel

Although  we believe  that we have been  successful  in  attracting  skilled and
experienced management and scientific personnel,  competition for such personnel
is intense and we cannot  assure you that we will be able to continue to attract
and retain  personnel of high caliber.  The loss of key management or scientific
personnel  might have an adverse  impact on us. In general,  we have not entered
into noncompetition  agreements with our employees, and such employees therefore
would be able to leave and compete with us.

Anti-Takeover  Effects  of  Certain  Special   Provisions  of  our  Articles  of
Organization and By-Laws, Preferred Stock and Shareholder Rights Plan

Certain  provisions  of our  Articles of  Organization  and By-Laws may have the
effect (alone,  or in conjunction  with the authorized but unissued common stock
and preferred stock and our shareholder  rights plan) of precluding or rendering
more  difficult the  acquisition  of control of our company by means of a tender
offer,  open market  purchases,  proxy fight or  otherwise,  of being adverse to
shareholders  who  desire to  participate  in a tender  offer  and of  depriving
shareholders  of possible  opportunities  to sell their shares at higher prices.
The Board of  Directors  is empowered  under our  Articles of  Organization  and
without further shareholder action to divide any or all shares of the authorized
preferred  stock into series and to fix and  determine  the relative  rights and
preferences  of the  shares  of any  series  so  established.  The  issuance  of
preferred stock by the Board of Directors  could adversely  affect the rights of
holders  of  shares  of our  common  stock.  In  addition,  we  have  adopted  a
shareholder  rights plan. The shareholder  rights plan may render more difficult
or tend to discourage a merger, tender offer or proxy contest, the assumption of
control  by a  holder  of a large  block of our  securities  or the  removal  of
incumbent management.

Year 2000 Issues

Year 2000 is the problem  resulting  from the use of a  two-digit  date field to
identify the year in computer software. Consequently,  computer programs may not
accurately reflect the appropriate date,  confusing "00" as the year 1900 rather
than the year 2000. Year 2000 is a pervasive  problem affecting many information
technology   systems  and  embedded   technologies   (e.g.   microprocessors  in
communications  systems) in all companies,  in all industries.  Failure by us or
failure by third  parties  upon which we rely to  effectively  address Year 2000
issues could have a material adverse impact on our financial position or results
of operations.

We have developed a plan to address the Year 2000 issues. The plan is segregated
into four phases:


1.   Information Collection - Identify all Year 2000 risk areas and assign 
     accountability.

2.   Assess Risk - Assign each item a category of risk  Commercial  Risk - Has a
     significant   impact  on  sale,   delivery  and  support  of  AVONEX(R)  or
     



                                       6
<PAGE>

     significant   impact  on  royalty  revenues.   Operational  Risk  -  Has  a
     significant  impact on  productivity  but does not  materially  impact  our
     results  of  operations.   Convenience   Risk  -  Has  a  minor  impact  on
     productivity.                                

3.   Remediate - Fix or replace, test and implement changes required for Year 
     2000 compliance.  

4.   Contingency Plan - Define procedures to be implemented  should a disruption
     due to Year 2000 occur.

We have  completed  the first two phases of the project and have  completed  the
testing and upgrading of all individual  software  applications that fall within
the  Commercial  Risk  category.  All of our  major  software  applications  are
purchased from major software  vendors and we perform only minor  customizations
to those  applications.  Our major software providers have attested to Year 2000
compliance.  We have reviewed our operations equipment for embedded technologies
which may be Year 2000 susceptible and do not believe necessary modifications to
be material.

We are communicating with our significant vendors and customers to determine the
progress that those vendors and  customers are making in  remediating  their own
Year 2000  issues.  We are  requiring  that  significant  vendors and  customers
certify those products and services to be Year 2000 compliant.

To date, Year 2000 costs have been minimal and we believe that future costs will
be immaterial. We expect the remainder of the Year 2000 compliance program to be
substantially complete by July 1999.

The most reasonably likely worst case scenario,  if significant Year 2000 issues
arise,  is that we would be hampered in our  efforts to  produce,  package,  and
deliver AVONEX(R),  our only revenue generating product,  and that third parties
from whom we receive  royalty revenue would  encounter  similar  difficulties in
their efforts to produce and sell products  which generate  royalty  revenue for
us. To mitigate the risks of such events, we are developing  contingency  plans,
which include  maintaining a sufficient  level of inventory of AVONEX(R) in both
bulk  and  packaged  format,  developing  secondary  sources  of  packaging  and
delivery,  providing for manual backup processes, and working with third parties
on Year 2000  certification.  To the  extent  that Year  2000  certification  is
unsatisfactory,  contingency plans will be developed or modified accordingly. In
the event that  significant  vendors do not achieve  Year 2000  compliance  in a
timely  manner,  and we are  unable to replace  them,  our  operations  could be
materially adversely affected.


                                 USE OF PROCEEDS

The amount of the proceeds we receive  upon  exercise of the options will depend
upon the  exercise  price  of the  options  and the  extent  to  which  they are
exercised.  We intend to use the net proceeds  from the sale of the common stock
underlying the options for general corporate purposes.



                                       7
<PAGE>

                              PLAN OF DISTRIBUTION

This  Prospectus  relates to up to 417,500 shares of common stock of Biogen (the
"Registered Stock") which may be offered and sold to an individual option holder
(the "Current Holder") pursuant to options (the "Options") transferred to her by
an officer of Biogen (the "Plan  Participant").  The Options  were issued to the
Plan Participant  pursuant to the Biogen,  Inc. 1985 Non-Qualified  Stock Option
Plan (the "Plan").  Having been  transferred to the Current Holder,  the Options
are still  governed by and subject to the terms and  limitations of the Plan and
the grant to the Plan  Participant,  and the  Current  Holder is entitled to the
same rights as the Plan Participant  under the Plan, as if no transfer had taken
place.  Accordingly,  the rights of the Current  Holder are subject to the terms
and  limitations  of the  original  grant  to the  Plan  Participant,  including
provisions  relating to  expiration  date,  exercisability,  exercise  price and
forfeiture.

Introduction

The purpose of the Plan is to encourage ownership of Biogen by certain employees
and  directors  of  Biogen  and its  affiliates  and to  provide  an  additional
incentive to them to promote the success of Biogen and its affiliates. Under the
Plan,  employees  and  directors of Biogen and its  affiliates  are provided the
opportunity  to purchase  shares of Biogen  common stock through the exercise of
non-qualified stock options.

Each option is set forth in an option agreement executed by both the Company and
the Plan  Participant.  Of the shares offered hereby,  117,500  underlie options
which expire on December 10, 2002, and 300,000  underlie options which expire on
September 22, 2005.

The Plan is not subject to the  provisions  of the  Employee  Retirement  Income
Security Act of 1974 ("ERISA"),  and options issued pursuant to the Plan are not
incentive stock options under Section 422 of the Internal  Revenue Code of 1986,
as amended.

Administration

The Plan is administered by the Stock and Option Plan  Administration  Committee
(the "Committee")  pursuant to authority  delegated by the Board of Directors of
Biogen (the "Board").  The Committee  presently  consists of Roger H. Morley and
Harold W. Buirkle, both of whom have been non-employee directors of Biogen since
1987 and 1986,  respectively.  The Committee  members,  who must be directors of
Biogen,  are selected by the Board and serve indefinitely at the pleasure of the
Board until their successors are appointed and qualified.  Any vacancy occurring
in the membership of the Committee is filled by appointment by the Board.

The Committee is  authorized to interpret the  provisions of the Plan and of the
options granted thereunder and to make all rules and determinations necessary or
advisable for the  administration of the Plan.  Subject to the provisions of the
Plan, options may be granted upon such terms and conditions as the Committee may
prescribe.

The Plan is intended to comply in all respects with Rule 16b-3 or its successors
promulgated under the Securities  Exchange Act of 1934 (the "Exchange Act") with
respect to  participants  who are subject to Section 16 of the Exchange Act, and
any  provision in the Plan with  respect to such persons  contrary to Rule 16b-3
shall be  deemed  null  and void to the  extent  permissible  by law and  deemed
appropriate by the Committee.





                                       8
<PAGE>

Exercise of Options by the Current Holder

In order to exercise the Options,  the Current  Holder must (i) notify Biogen of
such  exercise in writing,  (ii) make such  warranties as may be required by any
applicable  securities  law of any  applicable  jurisdiction,  and (iii) pay the
exercise price of shares purchased in full in cash, shares or in such other form
as may be permitted by the  Committee.  In no event shall Biogen be obligated to
issue any  shares  upon the  exercise  of any of the  Options if  prohibited  by
applicable law or regulation.

Tax Withholding

Upon the exercise of the Options by the Current Holder,  any federal,  state, or
local income  taxes,  employment  taxes,  Federal  Insurance  Contributions  Act
("FICA")   withholdings   or  other  amounts   required  by  applicable  law  or
governmental  regulation  to be withheld in  connection  with the exercise of an
option are the obligation of the Plan Participant.  Either the Current Holder or
the  Plan  Participant  must  advance  in  cash to  Biogen  the  amount  of such
withholdings unless a different  withholding  arrangement,  including the use of
shares of Biogen common stock,  is authorized by the Committee (and permitted by
law). If the fair market value of the shares withheld is less than the amount of
payroll  withholdings  required,  the Current Holder or Plan  Participant may be
required to advance the difference in cash to the Company.

Effect of Termination of Employment of Plan Participant

Because the Options are still governed by the terms of the Plan and the terms of
their grant to the Plan Participant,  the exercisability of the Options is still
affected by the Plan  Participant's  employment status with Biogen.  The Current
Holder may only exercise the Options while the Plan  Participant  is employed by
or is a  director  of  Biogen or within  three  months  after he ceases to be an
employee  or a  director  (but in no  event  later  than the  expiration  of the
option),  to the extent the Options are  exercisable at the time of termination,
unless  such  termination  is for  cause,  disability  or  death.  If  the  Plan
Participant is terminated for cause or is removed from the Board for cause,  the
Options shall terminate upon such termination or removal.  The  determination of
the  Committee  as to the  existence  of cause shall be  conclusive.  If, due to
disability (as determined by the Committee),  the Plan Participant  ceases to be
an employee or a director of Biogen, the Current Holder may exercise the Options
at any time within one year after such  termination due to disability (but in no
event later than the expiration of the Options).

If the Plan  Participant  dies while  employed by or a director  of Biogen,  the
Current  Holder may exercise  the Options for  one-year  after the date of death
(but in no event later than the expiration of the Options).

Transferability

The Current Holder may not transfer the Options other than (i) by will or by the
laws of descent  and  distribution  or (ii)  pursuant  to a  qualified  domestic
relations order as interpreted  under Rule  16b-3(a)(2)  under the Exchange Act.
Under the terms of the Plan,  any attempted  transfer,  assignment,  pledge,  or
other disposition of any option or of any rights granted thereunder  contrary to
the Plan's  provisions or the levy of any attachment or similar  process upon an
option or such rights is prohibited.





                                       9

<PAGE>

Amendment and Termination

The Plan will continue in existence until December 31, 2002 unless the Committee
decides to reduce or,  subject to shareholder  approval,  extend the duration of
the Plan.  The Plan may be amended by the  Committee  or the Board of  Directors
provided,  however,  that if the scope of any  amendment  is such as to  require
shareholder  approval in order to comply with Rule 16b-3 under the  Exchange Act
such amendment shall require approval by the shareholders. Any option holder who
is adversely affected by any such change must consent to the change in writing.

Adjustment

In the event that the Common  Stock of the Company is changed  into or exchanged
for a different  number or kind of shares or other  securities of the Company or
of another corporation by reason of any reorganization,  merger,  consolidation,
recapitalization,  reclassification,  stock split, stock dividend,  or the like,
appropriate  adjustment  will be made to the number and kind of shares  reserved
for  issuance  under the Plan and in the option price and the number and kind of
shares subject to outstanding options so that each option holder,  including the
Current  Holder,  shall be in a position  equivalent  to the position the option
holder  would  have  been  in  had  the  option  holder  exercised  the  options
immediately prior to the applicable event.

The options granted under the Plan terminate upon the dissolution or liquidation
of the  Company  (other  than in  connection  with a  transaction  to which  the
preceding paragraph applies). The option holder has the right, immediately prior
to any such dissolution or liquidation, to exercise the option to the extent the
right to purchase  shares has accrued as of the date  immediately  prior to such
dissolution or liquidation.


                         FEDERAL INCOME TAX CONSEQUENCES

Prior to exercising  the Options and selling the shares of common stock obtained
upon exercise,  the Current Holder should consult with her personal tax advisors
concerning the possible tax consequences.

Income Tax Consequences for the Plan Participant of Exercise of Options

When the Current Holder exercises  Options,  the Plan Participant will recognize
ordinary compensation income in an amount equal to the excess of the fair market
value of the shares  purchased (which will not necessarily be equal to the price
at which such shares are sold,  even if sold on the same day as exercised)  over
the  exercise  price at the time  the  Current  Holder  exercises  the  Options.
(Special  rules  may  apply  to the Plan  Participant  while  he is  subject  to
potential liability under Section 16(b) of the Exchange Act, which may defer the
recognition of compensation  income.)  Moreover,  such income will be subject to
payment  and   withholding  of  income  and  FICA  taxes.   Subject  to  certain
limitations,  the Company will  generally be entitled to claim a Federal  income
tax  deduction  at such time and in the same  amount  that the Plan  Participant
realizes  ordinary  income.  If the Current Holder  exercises  Options after the
death of the Plan  Participant,  current Treasury  Regulations  provide that any
such ordinary income will be recognized by the estate or beneficiary of the Plan
Participant. It is anticipated,  however, that the Internal Revenue Service will
soon clarify  whether such ordinary income could instead be taxed to the Current
Holder.

Income Tax Consequences for the Current Holder of Exercise of Options

As  described  in the  preceding  paragraph,  the Plan  Participant  and not the
Current  Holder  will  recognize  ordinary  compensation  income at the time the
Current Holder  exercises  Options if the Plan  Participant is alive at the date
the Options are  exercised.  If the Current Holder  exercises  Options after the
death of the Plan  Participant,  current Treasury  Regulations  provide that any
such ordinary income will be recognized by the estate or beneficiary of the Plan
Participant. It is anticipated,  however, that the Internal Revenue Service will
soon clarify  whether such ordinary income could instead be taxed to the Current
Holder. If the Current Holder chooses to exercise Options in whole or in part by
delivery of Biogen common stock already owned by the Current Holder,  she should
consult  with  her  tax  advisors  concerning  the  tax  consequences  of such a
transaction.




                                       10
<PAGE>

Income Tax Consequences on Subsequent Sales of Stock

When the Current Holder sells or exchanges  shares acquired upon the exercise of
Options,  the  difference  between the sales price and the Current  Holder's tax
basis for the  shares  will  generally  be taxable as  long-term  or  short-term
capital gain or loss (if the stock is a capital asset of the taxpayer) depending
upon  whether the stock has been held for more than one year after the  exercise
date.  If  the  Current  Holder  exercises  Options  for  cash  while  the  Plan
Participant  is alive,  the tax basis for the shares in the hands of the Current
Holder would be the exercise price for the Options plus the amount of the income
recognized  by the Plan  Participant  at the time of  exercise.  If the  Current
Holder  exercises the Options for cash after the Plan  Participant's  death, the
tax basis for the shares  would be the  exercise  price for the Options plus the
amount of income recognized upon exercise by the Current Holder. Different basis
rules will apply if the Current Holder  delivers  Biogen common stock in payment
of all or a portion of the exercise price of the Options.

                                  LEGAL MATTERS

The validity of the issuance of the shares of common stock  registered  pursuant
to this Prospectus has been passed upon for the Company by Mintz,  Levin,  Cohn,
Ferris,  Glovsky  and Popeo,  P.C.  ("Mintz  Levin")  of Boston,  Massachusetts.
Members of Mintz  Levin and  certain  members of their  families  and trusts for
their  benefit own an aggregate of  approximately  2,150 shares of Biogen common
stock.  A former  Member of Mintz Levin who is  currently of counsel to the firm
owns 500 shares of Biogen common stock.

                                     EXPERTS

The financial  statements  incorporated  in this  Prospectus  by reference  from
Biogen's  Annual  Report on Form 10-K for the year ended  December 31, 1997 have
been so  incorporated in reliance on the report of  PricewaterhouseCoopers  LLP,
independent  accountants,  given on the  authority  of said firm as  experts  in
accounting and auditing.



                                       11
<PAGE>


                       WHERE YOU CAN FIND MORE INFORMATION

We are a public company and file annual,  quarterly and special  reports,  proxy
statements and other  information  with the Securities and Exchange  Commission.
You may read and copy any document we file at the SEC's public reference room at
450 Fifth Street, N.W., Washington,  D.C. 20549. You can request copies of these
documents  by writing to the SEC and paying a fee for the copying  cost.  Please
call the SEC at  1-800-SEC-0330  for more information about the operation of the
public  reference  room. Our SEC filings are also available to the public at the
SEC's web site at  "http://www.sec.gov."  In addition, you can read and copy our
SEC filings at the office of the National  Association  of  Securities  Dealers,
Inc. at 1735 K Street, Washington, DC 20006.

This  prospectus  is only part of a  Registration  Statement on Form S-3 that we
have filed with the SEC under the  Securities  Act and  therefore  omits certain
information contained in the Registration Statement. We have also filed exhibits
and  schedules  with the  Registration  Statement  that are  excluded  from this
prospectus,  and you should  refer to the  applicable  exhibit or schedule for a
complete  description  of any  statement  referring  to any  contract  or  other
document. You may:

- -    inspect a copy of the  Registration  Statement,  including the exhibits and
     schedules, without charge at the public reference room or
- -    obtain a copy from the SEC upon payment of the fees prescribed by the SEC.


                     INCORPORATION OF DOCUMENTS BY REFERENCE

The SEC allows us to "incorporate  by reference"  information we file with it in
other documents,  which means that we can disclose important  information to you
by referring you to those documents.  The information  incorporated by reference
is considered to be part of this  prospectus and  information we file later with
the SEC will automatically update and supersede this information. We incorporate
by reference the documents listed below and any future filings made with the SEC
under Sections  13(a),  13(c), 14 or 15(d) of the Exchange Act. The documents we
are incorporating by reference are:

- -    Annual Report on Form 10-K for the fiscal year ended December 31, 1997;
- -    Definitive Proxy Statement filed on April 29, 1998;
- -    Quarterly Reports on Form 10-Q, for the quarters ended March 31, 1998, June
     30, 1998 and September 30, 1998;
- -    Reports on Form 8-K,  filed on March 16, 1998,  April 8, 1998,  May 7, 1998
     and December 23, 1998; - The  description of the common stock  contained in
     our  Registration  Statement  on Form 8-B  filed  under the  Exchange  Act,
     including  any  amendment or report filed for the purpose of updating  such
     description.




                                       12
<PAGE>

We will provide any person to whom a copy of this Prospectus is delivered a copy
of any of these  filings at no cost,  if such person  requests  such  filings by
writing or telephoning our Chief Financial  Officer at the following address and
number:

                      Biogen, Inc.
                      14 Cambridge Center
                      Cambridge, Massachusetts   02142
                      (617) 679-2000









                                       13

<PAGE>

============================================================   =================

  You should rely only on the  information  contained  in        417,500 shares
shares this  prospectus.  We have not  authorized  anyone to
provide you with  information  different from that contained
in this prospectus.  This prospectus is not an offer to sell      Biogen, Inc.
or a Biogen, Inc.  solicitation of an offer to buy shares of
our common stock in any jurisdictions  where offers and sale
are  not  permitted.   The  information  contained  in  this      Common Stock
prospectus is accurate only Common Stock as of February __ ,     ($.01 par value
1999.  You should  not assume  that this ($.01 par value per        per share)
share) prospectus is accurate as of any other date.

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

                                                                    PROSPECTUS
                                                                  -------------
                      TABLE OF CONTENTS


                                                        Page
Business...........................................        2
Risk Factors.......................................        3
Use of Proceeds....................................        8
Plan of Distribution...............................        9
Federal Income Tax Consequences....................       11
Legal Matters......................................       12
Experts............................................       12
Where You Can Find More Information................       13
Incorporation of Documents by Reference............       13



                                                                    _____, 1999




=============================================================    ===============







<PAGE>


                 PART II. INFORMATION NOT REQUIRED IN PROSPECTUS

     Item 14.  Other Expenses of Issuance and Distribution

              The following table sets forth Biogen's  estimates of the expenses
     in connection  with the issuance and  distribution  of the shares of common
     stock being registered.

            Item                                                       Amount
            ----                                                       ------
            Legal fees and expenses...........................          7,500
            Accounting fees and expenses......................          2,667
            Miscellaneous fees and expenses...................              0  
            Total.............................................        $10,167


     Item 15.  Indemnification of Directors and Officers.

     Massachusetts   General  Laws,   Chapter  156B,   Section  67,  empowers  a
     Massachusetts  corporation  to indemnify any person in connection  with any
     action, suit or proceeding brought or threatened by reason of the fact that
     such  person  is or was a  director,  officer,  employee  or  agent  of the
     corporation  or was serving as such with respect to another  corporation or
     other entity at the request of such  corporation,  unless such person shall
     have been  adjudicated in any proceeding not to have acted in good faith in
     the  reasonable  belief that such action was in the best  interests  of the
     corporation.  Biogen's  Articles  of  Organization,  as  amended,  contains
     provisions that require the Company to indemnify its directors and officers
     to the fullest extent permitted by Massachusetts law.

     Item 16.  Exhibits and Financial Statement Schedules

     (a)  Exhibits.

               4.1 Form of Common Stock Share Certificate  (Filed as Exhibit 4.1
          to  Registration  Statement  on  Form  S-3,  File  No.  33-51639,  and
          incorporated herein by reference).

               4.2 Articles of Organization, as amended (Filed as Exhibit 3.1 to
          Annual  Report on Form 10-K for the  fiscal  year ended  December  31,
          1996, File No. 0-12042, and incorporated herein by reference).

               4.3 By-Laws, as amended (Filed as Exhibit 3.2 to Annual Report on
          Form 10-K for the year ended December 31, 1992, File No. 0-12042,  and
          incorporated herein by reference).

               4.4  Rights  Agreement,  dated  as of May 8,  1989,  between  the
          Registrant  and First  National  Bank of Boston as the  Rights  Agent,
          including  Certificate of Designation of Series A Junior Participating
          Preferred Stock (Filed as Exhibit 1 to Registration  Statement on Form
          8-A, File No. 0-12042,  filed May 26, 1989, and incorporated herein by
          reference).

               5.1 Opinion of Mintz,  Levin,  Cohn,  Ferris,  Glovsky and Popeo,
          P.C. as to the legality of the shares being registered.



                                      II-2
<PAGE>

               23.1 Consent of PricewaterhouseCoopers LLP.

               23.2 Consent of Mintz,  Levin, Cohn,  Ferris,  Glovsky and Popeo,
          P.C. (included in opinion of counsel filed as Exhibit 5.1).

               24.1  Power  of  Attorney  (included  on  signature  page of this
          Registration Statement).


       Item 17.  Undertakings

            (a)  The undersigned Registrant hereby undertakes:

               (1) To file, during any period in which offers or sales are being
          made, a post-effective amendment to this Registration Statement:

               (i) To include any prospectus required by Section 10(a)(3) of the
          Securities Act of 1933;

               (ii) To reflect  in the  prospectus  any facts or events  arising
          after the effective  date of the  Registration  Statement (or the most
          recent post-effective amendment thereof) which, individually or in the
          aggregate, represent a fundamental change in the information set forth
          in the  Registration  Statement.  Notwithstanding  the foregoing,  any
          increase or any decrease in volume of securities offered (if the total
          dollar  value of  securities  offered  would not exceed that which was
          registered)  and  any  deviation  from  the  low  or  high  end of the
          estimated  maximum  offering  range  may be  reflected  in the form of
          prospectus  filed with the  Commission  pursuant to Rule 424(b) if, in
          the aggregate,  the changes in volume and price represent no more than
          a 20% change in the maximum aggregate  offering price set forth in the
          "Calculation of Registration Fee" table in the effective  Registration
          Statement; and

               (iii) To include any  material  information  with  respect to the
          plan of  distribution  not  previously  disclosed in the  Registration
          Statement  or  any  material   change  to  such   information  in  the
          Registration  Statement;provided,  however,  that paragraphs (a)(1)(i)
          and (a)(1)(ii) do not apply if the  Registration  Statement is on Form
          S-3, Form S-8 or Form F-3, and the information required to be included
          in a  post-effective  amendment  by those  paragraphs  is contained in
          periodic  reports  filed with or  furnished to the  Commission  by the
          Registrant  pursuant to Section 13 or Section 15(d) of the  Securities
          Exchange Act that are  incorporated  by reference in the  Registration
          Statement.

               (2) That, for the purpose of determining  any liability under the
          Securities Act of 1933,  each such  post-effective  amendment shall be
          deemed to be a new registration  statement  relating to the securities
          offered  therein,  and the  offering of such  securities  at that time
          shall be deemed to be the initial bona fide offering thereof.

               (3) To  remove  from  registration  by means of a  post-effective
          amendment any of the securities  being  registered which remain unsold
          at the termination of the offering.




                                      II-3
<PAGE>

               (b) Insofar as indemnification  for liabilities arising under the
          Securities  Act of 1933 may be  permitted to  directors,  officers and
          controlling  persons  of the  Registrant  pursuant  to  the  foregoing
          provisions,  or otherwise, the Registrant has been advised that in the
          opinion of the Securities and Exchange Commission such indemnification
          is against  public  policy as expressed in the Act and is,  therefore,
          unenforceable.  In the event that a claim for indemnification  against
          such liabilities (other than the payment by the Registrant of expenses
          incurred or paid by a director,  officer or controlling  person of the
          Registrant  in  the  successful   defense  of  any  action,   suit  or
          proceeding)  is  asserted  by such  director,  officer or  controlling
          person  in  connection  with  the  securities  being  registered,  the
          Registrant  will,  unless in the opinion of its counsel the matter has
          been  settled  by  controlling   precedent,   submit  to  a  court  of
          appropriate  jurisdiction the question whether such indemnification by
          it is  against  public  policy  as  expressed  in the Act and  will be
          governed by the final adjudication of such issue.

               (c)  The  undersigned  Registrant  hereby  undertakes  that,  for
          purposes of  determining  any liability  under the  Securities  Act of
          1933,  each  filing of the  Registrant's  annual  report  pursuant  to
          Section 13(a) or Section 15(d) of the Securities  Exchange Act of 1934
          that is incorporated by reference in the Registration  Statement shall
          be  deemed  to  be  a  new  Registration  Statement  relating  to  the
          securities  offered  therein,  and the offering of such  securities at
          that  time  shall be  deemed  to be the  initial  bona  fide  offering
          thereof.



                                      II-4
<PAGE>

                                   SIGNATURES

              Pursuant to the  requirements  of the  Securities Act of 1933, the
     Registrant  certifies  that it has  reasonable  grounds to believe  that it
     meets all of the  requirements  for filing on Form S-3 and has duly  caused
     this Registration  Statement to be signed on its behalf by the undersigned,
     thereunto duly  authorized,  in Cambridge,  Massachusetts on the 1st day of
     February, 1999.

                                   BIOGEN, INC.

                                   By: s/ James L. Vincent
                                       James L. Vincent
                                       Chairman of the Board and Chief Executive
                                       Officer


                                POWER OF ATTORNEY

              The  registrant  and each person  whose  signature  appears  below
     constitutes and appoints Timothy M. Kish and Michael J. Astrue, and each of
     them singly, his, her or its true and lawful  attorneys-in-fact and agents,
     with full power of substitution and resubstitution,  for him, her or it and
     in his, her or its name,  place and stead,  in any and all  capacities,  to
     sign  and  file  (i)  any  and  all  amendments  (including  post-effective
     amendments) to this Registration Statement,  with all exhibits thereto, and
     other  documents  in  connection  therewith,   and  (ii)  any  registration
     statement,  and any and all  amendments  thereto,  relating to the offering
     covered  hereby filed  pursuant to Rule 462(b) under the  Securities Act of
     1933,  with the  Securities  and Exchange  Commission,  granting  unto said
     attorneys-in-fact and agents, and each of them, full power and authority to
     do and perform  each and every act and thing  requisite  or necessary to be
     done in and about the premises, as fully to all intents and purposes as he,
     she, or it might or could do in person, hereby ratifying and confirming all
     that said  attorneys-in-fact  and  agents  or any of them,  or their or his
     substitute  or  substitutes,  may lawfully do or cause to be done by virtue
     hereof.

              Pursuant to the  requirements  of the Securities Act of 1933, this
     Registration  Statement has been signed below by the following  persons and
     in the capacities and on the dates indicated.




                                      II-5
<PAGE>



Signature                     Title                            Date

s/ Jame sL. Vincent           Chairman of the Board            February 1, 1999
James L. Vincent              and Chief Executive Officer
                              (principal executive officer)

s/ Timothy M. Kish            Vice President-Finance and       February 1, 1999
Timothy M. Kish               Chief Financial Officer                  
                              (principal financial and 
                              accounting officer)

s/ Alexander G. Bearn         Director                         February 1, 1999
Alexander G. Bearn

s/ Alan Belzer                Director                         February 1, 1999
Alan Belzer

s/ Harold W. Buirkle          Director                         February 1, 1999
Harold W. Buirkle

s/ Mary L. Good               Director                         February 1, 1999
Mary L. Good

s/ Thomas F. Keller           Director                         February 1, 1999
Thomas F. Keller

s/ Roger H. Morley            Director                         February 1, 1999
Roger H. Morley

s/ Kenneth Murray             Director                         February 1, 1999
Kenneth Murray

s/ Phillip A. Sharp           Director                         February 1, 1999
Philip A. Sharp

s/ Alan K. Simpson            Director                         February 1, 1999
Alan K. Simpson

s/ James W. Stevens           Director                         February 1, 1999
James W. Stevens



                                      II-6
<PAGE>


                                  EXHIBIT INDEX


     Exhibit
     Number                                      Exhibit

          4.1  Form of Common Stock Share  Certificate  (Filed as Exhibit 4.1 to
               Registration  Statement  on Form  S-3,  File  No.  33-51639,  and
               incorporated herein by reference).

          4.2  Articles  of  Organization,  as amended  (Filed as Exhibit 3.1 to
               Annual Report on Form 10-K for the fiscal year ended December 31,
               1996, File No. 0-12042, and incorporated herein by reference).

          4.3  By-Laws,  as amended  (Filed as Exhibit  3.2 to Annual  Report on
               Form 10-K for the year ended December 31, 1992, File No. 0-12042,
               and incorporated herein by reference).

          4.4  Rights Agreement, dated as of May 8, 1989, between the Registrant
               and First National Bank of Boston as the Rights Agent,  including
               Certificate  of  Designation  of  Series A  Junior  Participating
               Preferred Stock (Filed as Exhibit 1 to Registration  Statement on
               Form 8-A, File No. 0-12042,  filed May 26, 1989, and incorporated
               herein by reference).

          5.1  Opinion of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. as
               to the legality of the shares being registered.

         23.1  Consent of PricewaterhouseCoopers LLP

         23.2  Consent of Mintz,  Levin, Cohn,  Ferris,  Glovsky and Popeo, P.C.
               (included in opinion of counsel filed as Exhibit 5.1)

         24.1  Power  of  Attorney   (included   on   signature   page  of  this
               Registration Statement)





                                              Consent of Independent Accountants


     We hereby  consent to the  incorporation  by  reference  in the  Prospectus
constituting part of this Registration Statement on Form S-3 of our report dated
January 13, 1998  (except as to the fourth  paragraph  of Note 8, which is as of
March 16, 1998),  appearing on page 50 of the 1997 Annual Report to Shareholders
of Biogen,  Inc.,  which is incorporated  by reference in Biogen,  Inc.'s Annual
Report on Form 10-K for the year ended December 31, 1997. We also consent to the
reference to us under the heading "Experts" in such Prospectus.





PricewaterhouseCoopers LLP
Boston, Massachusetts
February 1, 1999


Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.


Biogen, Inc.

February 2, 1999
Page 3

               Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
                              One Financial Center
                           Boston, Massachusetts 02111

701 Pennsylvania Avenue, N.W.                            Telephone: 617/542-6000
Washington, D.C. 20004                                         Fax: 617/542-2241
Telephone: 202/434-7300
Fax: 202/434-7400




                                     February 2, 1999

Biogen, Inc.
14 Cambridge Center
Cambridge, Massachusetts 02142

Gentlemen:

     We have acted as counsel to Biogen, Inc., a Massachusetts  corporation (the
"Company"),  in connection  with the  preparation and filing with the Securities
and Exchange  Commission (the "Commission") of a Registration  Statement on Form
S-3 (the "Registration Statement"), pursuant to which the Company is registering
under the  Securities  Act of 1933, as amended,  a total of 417,500  shares (the
"Shares") of its common stock, $.01 par value per share (the "Common Stock"), to
be offered for sale by the Company from time to time under the Biogen, Inc. 1985
Non-Qualified Stock Option Plan (the "Plan").  This opinion is being rendered in
connection with the filing of the Registration Statement.

     In connection with this opinion, we have examined the Company's Articles of
Organization  and By-Laws,  as amended to date;  such  records of the  corporate
proceedings  of the Company as we have  deemed  material;  and the  Registration
Statement and the exhibits thereto filed with the Commission.

     In our examination,  we have assumed the genuineness of all signatures, the
legal capacity of natural persons,  the authenticity of all documents  submitted
to us as  originals,  the  conformity  to original  documents  of all  documents
submitted to us as certified or photostatic  copies and the  authenticity of the
originals of such copies.

     Based upon the foregoing,  we are of the opinion that,(i) the Shares have
been duly and validly  authorized  by the  Company,  and (ii) the  Shares,  when
issued and paid for in accordance  with the terms of the Plan and any applicable
agreements   thereto,   will  be  duly  and  validly  issued,   fully  paid  and
non-assessable shares of Common Stock, free of preemptive rights.

     Our opinion is limited to the laws of the  Commonwealth  of  Massachusetts,
and we express no opinion with respect to the laws of any other jurisdiction. No
opinion is  expressed  herein with  respect to the  qualification  of the Shares
under the securities or blue sky laws of any state or any foreign jurisdiction.

     We  understand  that you wish to file this  opinion  as an  exhibit  to the
Registration Statement, and we hereby consent thereto. We hereby further consent
to the  reference  to us under the caption  "Legal  Matters"  in the  prospectus
included in the Registration Statement.

                                         Very truly yours,

                                         /s/ Mintz, Levin, Cohn, Ferris,
                                             Glovsky and Popeo, P.C.

                                             Mintz, Levin, Cohn, Ferris,
                                             Glovsky and Popeo, P.C.


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission