SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934

                                (Amendment No.3)*

                               FACET BIOTECH CORP
          ____________________________________________________________
                                (Name of issuer)

                                  Common Stock
           ___________________________________________________________
                         (Title of class of securities)

                                    30303Q103
                ________________________________________________
                                 (CUSIP number)


                                 Seth A. Klarman
                            The Baupost Group, L.L.C.
                         10 St. James Avenue, Suite 1700
                           Boston, Massachusetts 02116
                                 (617) 210-8300

                                 With a copy to:

                            Gregory D. Sheehan, Esq.
                                Ropes & Gray LLP
                             One International Place
                           Boston, Massachusetts 02110

           __________________________________________________________
           (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                December 16, 2009
          _____________________________________________________________
            (Dates of Events which Require Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to
report the acquisition that is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check
the following box [].
NOTE: Schedules filed in paper format shall include a signed original
and five copies of the schedule, including all exhibits. See Rule 13d-7
for other parties to whom copies are to be sent.
* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not be
deemed to be filed for the purpose of Section 18 of the Securities Exchange
Act of 1934 or otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act
(however, see the Notes).







                                  SCHEDULE 13D

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1.        NAME OF REPORTING PERSONS
          The Baupost Group, L.L.C.

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2.        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP       (a)   [ ]
          (See Instructions)                                     (b)   [X]

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3.        SEC USE ONLY

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4.        SOURCE OF FUNDS
          OO

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5.        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
          ITEM 2(d) or 2(e)                                                [ ]

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6.        CITIZENSHIP OR PLACE OF ORGANIZATION
          Massachusetts

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NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7.     SOLE VOTING POWER 0


8.     SHARED VOTING POWER  3,506,875


9.     SOLE DISPOSITIVE POWER    0


10.    SHARED DISPOSITIVE POWER   3,506,875



11.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
          3,506,875


12.       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN SHARES (See Instructions)  [ ]



13.       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)  13.99%*


14.       TYPE OF REPORTING PERSON (See Instructions)
          IA
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* The percentage ownership in the Issuer's Common Stock, $0.01 par value,
is based upon 25,067,740 issued and outstanding shares as reported by the
Issuer in its filing on Form 10-Q for the fiscal quarter ended September 30,
2009.




                                  SCHEDULE 13D

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1.        NAME OF REPORTING PERSONS
          Baupost Value Partners, L.P.-IV

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2.        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP         (a)  [ ]
          (See Instructions)                                       (b)  [X]

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3.        SEC USE ONLY

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4.        SOURCE OF FUNDS
          OO

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5.        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
          ITEM 2(d) or 2(e)                                                [_]

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6.        CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware

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NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:


7.     SOLE VOTING POWER   0


8.     SHARED VOTING POWER    1,238,128


9.     SOLE DISPOSITIVE POWER     0


10.    SHARED DISPOSITIVE POWER    1,238,128


11.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
          1,238,128


12.       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN SHARES (See Instructions) [ ]


13.       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)   4.94%*


14.       TYPE OF REPORTING PERSON (See Instructions) PN
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(*) The percentage ownership in the Issuer's Common Stock, $0.01 par value,
is based upon 25,067,740 issued and outstanding shares as reported by the
Issuer in its filing on Form 10-Q for the fiscal quarter ended September 30,
2009.


                                  SCHEDULE 13D

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1.        NAME OF REPORTING PERSONS*
          SAK Corporation

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2.        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP          (a)   [ ]
          (See Instructions)                                        (b)   [X]

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3.        SEC USE ONLY

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4.        SOURCE OF FUNDS
          N/A

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5.        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
          ITEM 2(d) or 2(e)                                               [ ]

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6.        CITIZENSHIP OR PLACE OF ORGANIZATION
          Massachusetts

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NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7.    SOLE VOTING POWER    0


8.    SHARED VOTING POWER  3,506,875


9.    SOLE DISPOSITIVE POWER    0


10.    SHARED DISPOSITIVE POWER    3,506,875


11.    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
       3,506,875


12.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN SHARES (See Instructions) [ ]


13.       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)   13.99%*


14.       TYPE OF REPORTING PERSON (See Instructions)    HC
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(*) The percentage ownership in the Issuer's Common Stock, $0.01 par value,
is based upon 25,067,740 issued and outstanding shares as reported by the
Issuer in its filing on Form 10-Q for the fiscal quarter ended September 30,
2009.



                                  SCHEDULE 13D

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1.        NAME OF REPORTING PERSONS*
          Seth A. Klarman

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2.        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP           (a)  [ ]
          (See Instructions)                                         (b)  [X]

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3.        SEC USE ONLY

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4.        SOURCE OF FUNDS
          N/A

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5.        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
          ITEM 2(d) or 2(e)                                               [ ]

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6.        CITIZENSHIP OR PLACE OF ORGANIZATION
          United States of America

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NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7.     SOLE VOTING POWER     0


8.     SHARED VOTING POWER  3,506,875


9.     SOLE DISPOSITIVE POWER    0


10.    SHARED DISPOSITIVE POWER    3,506,875


11.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      3,506,875

12.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN SHARES (See Instructions)  [ ]


13.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)    13.99%*



14.       TYPE OF REPORTING PERSON (See Instructions)
          HC
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 (*) The percentage ownership in the Issuer's Common Stock, $0.01 par value,
is based upon 25,067,740 issued and outstanding shares as reported by the
Issuer in its filing on Form 10-Q for the fiscal quarter ended September 30,
2009.

     * This  statement  on Schedule  13D is being  jointly  filed by The Baupost
Group, L.L.C. ("Baupost"),  Baupost Value Partners, L.P.-IV, SAK Corporation and
Seth A.  Klarman.  Baupost is a  registered  investment  adviser  and acts as an
investment  adviser to certain investment  limited  partnerships,  including and
Baupost Value Partners,  L.P. IV. SAK Corporation is the Manager of Baupost. Mr.
Klarman,  as the  sole  director  and  sole  officer  of SAK  Corporation  and a
controlling person of Baupost,  may be deemed to have beneficial ownership under
Section  13(d)  of the  Securities  Exchange  Act  of  1934  of  the  securities
beneficially owned by Baupost. Securities reported on this statement on Schedule
13D as being  beneficially  owned by Baupost  include  securities  purchased  on
behalf of various investment limited  partnerships,  including and Baupost Value
Partners, L.P.-IV.
     Pursuant to Rule 13d-4,  Seth A. Klarman and SAK  Corporation  declare that
the filing of this statement on Schedule 13D shall not be deemed an admission by
either or both of them that they are,  for the  purposes  of  Sections  13(d) or
13(g) the  beneficial  owner of any  securities  covered  by this  statement  on
Schedule  13D, and further  state that neither of them have any power to vote or
dispose  of, or direct  the  voting or  disposition  of, or direct the voting or
disposition of, any of the securities covered by this statement on Schedule 13D.



Item 4.  Purpose of Transaction.

Item 4 is hereby amended and restated to read as follows:

The  Reporting  Persons  are  filing  this  amendment  to  its  Schedule  13D in
connection with the following events:


     -  September  21,  2009:  a  wholly-owned  subsidiary  of Biogen  Idec Inc.
     ("Biogen Idec")  commenced an unsolicited  tender offer for the Issuer at a
     price of  $14.50  per  share

     - October 1, 2009: the Issuer's  Board of Directors  filed a Schedule 14D-9
     with the Securities and Exchange  Commission  ("SEC")  rejecting the tender
     offer

     - December 3, 2009:  Biogen Idec increased the price of its tender offer to
     $17.50 per share

     - December 10, 2009: the Issuer's  Board of Directors  amended its Schedule
     14D-9 filing with the SEC rejecting the tender offer

     - December 16, 2009:  Biogen  Idec's  tender offer is set to expire  unless
     extended


     The  Reporting  Persons have informed the Issuer that they do not intend to
tender their shares of Common Stock into Biogen  Idec's  $17.50 per share tender
offer. The Reporting  Persons do not believe the current tender offer adequately
reflects the Issuer's value.  The Reporting  Persons would  consider,  and would
likely be more  receptive  to, an offer with Biogen Idec or another  party which
has a transaction  structure that better  compensates the Issuer's  stockholders
for the potential future value of the Issuer's assets.

     The  Reporting   Persons  expect  to  continue  to  have  discussions  with
representatives  of the Issuer,  other stockholders and other interested persons
regarding the future plans of the Issuer.

     Except as set forth above,  the  Reporting  Persons do not have,  as of the
date of this  Amendment  No. 3, any other plans or  proposals  that relate to or
would  result in any of the actions or events  specified  in clauses (a) through
(j) of Item 4 of Schedule  13D.  The  Reporting  Persons  intend to review their
investment  in the Issuer on a  continuing  basis and may engage in  discussions
with  management  and the board of  directors  of the Issuer,  other  holders of
Common Stock and other relevant  parties  concerning  the business,  operations,
governance, strategy,  capitalization,  ownership and future plans of the Issuer
and the management and board composition of the Issuer. The Reporting Person may
change its plans or  proposals  in the  future.  Depending  on  various  factors
including,  without  limitation,  the  Issuer's  financial  position,  strategic
direction, business and prospects, anticipated future developments, existing and
anticipated market conditions from time to time, actions taken by the management
and board of directors of the Issuer,  price levels of the Common Stock, general
economic  conditions and regulatory  matters,  the Reporting  Persons may in the
future take such  actions  with  respect to its  investment  in the Issuer as it
deems appropriate including,  without limitation,  seeking representation on the
board of directors of the Issuer,  purchasing  additional  Common Stock or other
securities of the Issuer,  selling some or all of their Common Stock or engaging
in short  selling of or any hedging or similar  transaction  with respect to the
Common  Stock,  to the  extent  permitted  under  applicable  law,  or engage or
participate  in a  transaction  with  the  purpose  or  effect  of  changing  or
influencing the control of the Issuer. Any such  transactions,  if they occur at
all, may take place at any time and without prior notice.

     The  Reporting  Person  reserves  the right to change  its  intention  with
respect to any or all of the matters referred to in this Item 4.


Item 5.  Interest in Securities of the Issuer.

(a)-(b)  The responses to Items 7 - 13 of the cover pages of this Schedule 13D
 are incorporated herein by reference.

(c)  The trading dates, number of shares of Common Stock purchased or sold,
and the price per share for all transactions by the Reporting Persons in the
shares of Common Stock within the last 60 days, are set forth
below:
        Not applicable.

(d)      No other person has the right to receive or the power to direct the
receipt of dividends from, or the proceeds from the sale of, the shares of
Common Stock set forth above.

(e)      Not applicable.


                                   SIGNATURES

         After reasonable inquiry and to the best of their knowledge and
belief, the undersigned certify that the information set forth in this
Schedule 13D is true, complete, and correct.

Dated:  December 16, 2009

                                          THE BAUPOST GROUP, L.L.C.



                                           By:     /s/ Seth A. Klarman
                                           Name:    Seth A. Klarman
                                           Title:   President



                                          BAUPOST VALUE PARTNERS, L.P.-IV


                                          By:    The Baupost Group, L.L.C., its
                                                   managing general partner


                                          By:      /s/ Seth A. Klarman
                                          Name:    Seth A. Klarman
                                          Title:   President


                                          SAK CORPORATION


                                           By:      /s/ Seth A. Klarman
                                           Name:    Seth A. Klarman
                                           Title:   President



                                           /s/ Seth A. Klarman
                                           Seth A. Klarman