SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

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


                                    FORM 8-K


                                 CURRENT REPORT


                         PURSUANT TO SECTION 13 OR 15(D)
                     OF THE SECURITIES EXCHANGE ACT OF 1934



Date of report (Date of earliest event reported):  October 27, 2004


                       PAR PHARMACEUTICAL COMPANIES, INC.
                       ----------------------------------
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)



          DELAWARE                 FILE NUMBER 1-10827           22-3122182
          --------                 -------------------           ----------
      (STATE OR OTHER           (COMMISSION FILE NUMBER)      (I.R.S. EMPLOYER
      JURISDICTION OF                                        IDENTIFICATION NO.)
INCORPORATION OR ORGANIZATION)



ONE RAM RIDGE ROAD, SPRING VALLEY, NEW YORK                              10977
- -------------------------------------------                              -----
  (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                            (ZIP CODE)




Registrant's telephone number, including area code: (845) 425-7100




SECTION 1 - REGISTRANT'S BUSINESS AND OPERATIONS

SECTION 2 - SECURITIES AND TRADING MARKETS

      ITEM 1.01. ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT.

      ITEM 3.03. MATERIAL MODIFICATIONS TO RIGHTS OF SECURITY HOLDERS.

      On October 26, 2004 the Board of Directors  (the "Board of  Directors") of
Par  Pharmaceutical  Companies,  Inc., a Delaware  corporation  (the "Company"),
declared a dividend of one preferred  share  purchase right (a "Right") for each
outstanding  share of common  stock,  par value $0.01 per share,  of the Company
(the  "Common  Stock").  The  dividend  is  payable on  November  8, 2004 to the
stockholders  of record on as of the close of business on such date (the "Record
Date").  Each Right entitles the registered  holder to purchase from the Company
one one-thousandth of a share of Series A Junior Participating  Preferred Stock,
par value $0.0001 per share (the "Preferred  Stock"),  of the Company at a price
of $225.00 per one one-thousandth of a share of Preferred Stock (as the same may
be adjusted,  the "Purchase Price"). The description and terms of the Rights are
set forth in a Rights  Agreement,  dated as of October 27, 2004 (as the same may
be amended from time to time, the "Rights  Agreement"),  between the Company and
American Stock Transfer & Trust Company, a New York corporation, as Rights Agent
(the "Rights Agent").

      The  Rights  have  certain  anti-takeover  effects.  The  Rights may cause
substantial  dilution to a person or group that  attempts to acquire the Company
on terms not  approved by the Board of  Directors,  except  pursuant to an offer
conditioned on a substantial number of Rights being acquired.  The rights should
not  interfere  with any merger or other  business  combination  approved by the
Board of  Directors  because  of the Board of  Directors'  ability to redeem the
Rights, as discussed below.

      Until the close of  business on the earlier of (i) the tenth day after the
first date of a public announcement that a person (other than an Exempted Entity
(as defined below)) or group of affiliated or associated  persons (an "Acquiring
Person")  has  acquired  beneficial  ownership  of 15% or more of the  shares of
Common Stock then outstanding or (ii) the tenth business day (or such later date
as may be  determined  by action of a majority of the entire  Board of Directors
prior to such  time as any  person or group of  affiliated  persons  becomes  an
Acquiring  Person) after the date of  commencement of a tender offer or exchange
offer the  consummation  of that would result in the  beneficial  ownership by a
person (other than an Exempted  Entity) or group of 15% or more of the shares of
Common Stock then  outstanding  (the earlier of such dates being herein referred
to as the  "Distribution  Date"),  the Rights will be evidenced by the shares of
Common Stock  represented by certificates for Common Stock outstanding as of the
Record  Date,  together  with a copy of the  summary of rights  disseminated  in
connection with the original dividend of Rights.

      "Exempted  Entity"  shall mean (1) the  Company,  (2) any  Subsidiary  (as
defined  below) of the Company (in the case of subclauses  (1) and (2) including
in its fiduciary  capacity),  (3) any employee benefit plan of the Company or of
any Subsidiary of the Company and (4) any entity or trustee holding Common Stock

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for or  pursuant to the terms of any such plan or for the purpose of funding any
such plan or funding other employee  benefits for employees of the Company or of
any Subsidiary of the Company.

      The Rights Agreement  provides that,  until the Distribution  Date (or the
earlier  redemption,  exchange or expiration of the Rights),  the Rights will be
transferable  only in connection  with the transfer of Common  Stock.  Until the
Distribution  Date (or the earlier  redemption,  exchange or  expiration  of the
Rights),  the  surrender for transfer of any  certificates  for shares of Common
Stock  outstanding as of the Record Date, even without a notation  incorporating
the Rights Agreement by reference or a copy of this Summary of Rights, will also
constitute the transfer of the Rights associated with the shares of Common Stock
represented  by  such  certificate.   As  soon  as  practicable   following  the
Distribution  Date,   separate   certificates   evidencing  the  Rights  ("Right
Certificates") will be mailed to holders of record of the Common Stock as of the
close of business on the Distribution Date and such separate Right  Certificates
alone will evidence the Rights.

      The Rights are not exercisable until the Distribution Date and will expire
at the close of business on October 27, 2014, unless (i) the Rights Agreement is
extended by the Board of Directors by the  amendment of the Rights  Agreement or
(ii) the Rights are earlier  redeemed or  exchanged  by the Company as described
below.

      The Purchase Price payable, and the number of shares of Preferred Stock or
other securities or property  issuable,  upon exercise of the Rights are subject
to adjustment from time to time to prevent  dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Stock,  (ii) upon the grant to holders of the Preferred  Stock of certain rights
or  warrants  to  subscribe  for or  purchase  Preferred  Stock at a  price,  or
securities  convertible into Preferred Stock with a conversion  price, less than
the  then-current  market  price  of the  Preferred  Stock  or  (iii)  upon  the
distribution  to holders of the Preferred  Stock of evidences of indebtedness or
assets  (excluding  regular  periodic  cash  dividends or  dividends  payable in
Preferred  Stock)  or of  subscription  rights or  warrants  (other  than  those
referred to above).

      The Rights are also subject to adjustment in the event of a stock dividend
on the  Common  Stock  payable  in  shares  of  Common  Stock  or  subdivisions,
consolidations or combinations of the Common Stock occurring,  in any such case,
prior to the Distribution Date.

      Shares of Preferred Stock  purchasable upon exercise of the Rights will be
redeemable.  Each share of  Preferred  Stock will be entitled,  when,  as and if
declared, to a minimum preferential quarterly dividend payment of the greater of
(a) $1.00 per share and (b) an amount equal to 1,000 times the dividend declared
per share of Common Stock. In the event of  liquidation,  dissolution or winding
up of the  Company,  the  holders of the  Preferred  Stock will be entitled to a
minimum  preferential  liquidation payment of $1,000 per share (plus any accrued
but unpaid  dividends)  but will be  entitled  to an  aggregate  1,000 times the
payment made per share of Common Stock.  Each share of Preferred Stock will have
1,000 votes,  voting together with the Common Stock, with specified  exceptions.
Finally, in the event of any merger, consolidation or other transaction in which
shares of Common Stock are converted or exchanged, each share of Preferred Stock
will be entitled to receive 1,000 times the amount  received per share of Common
Stock. These rights are protected by anti-dilution provisions.

      Because of the nature of the Preferred Stock's  dividend,  liquidation and
voting  rights,  the  value  of the one  one-thousandth  interest  in a share of
Preferred Stock  purchasable upon exercise of each Right should  approximate the
value of one share of Common Stock.

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      In the event that any person or group of affiliated or associated  persons
shall  become an  Acquiring  Person,  each holder of a Right,  other than Rights
beneficially  owned by the Acquiring  Person (which will thereupon become void),
will  thereafter  have the right to receive upon exercise of a Right and payment
of the  Purchase  Price,  that number of shares of Common  Stock having a market
value of two times the Purchase Price.

      In the event  that,  after a person  or group  shall  become an  Acquiring
Person,  the  Company  is  acquired  in a merger or other  business  combination
transaction or 50% or more of its consolidated assets or earning power are sold,
proper  provision will be made so that each holder of a Right (other than Rights
beneficially  owned by an  Acquiring  Person  which will have become  void) will
thereafter  have  the  right  to  receive,  upon  the  exercise  thereof  at the
then-current  exercise price of the Right, that number of shares of common stock
of the entity with which the Company  has engaged in the  foregoing  transaction
(or its  parent),  which number of shares at the time of such  transaction  will
have a market value of two times the Purchase Price.

      At any time after any  person or group  becomes  an  Acquiring  Person and
prior  to the  acquisition  by  such  person  or  group  of 50% or  more  of the
outstanding  shares of Common Stock or the  occurrence of an event  described in
the prior paragraph,  a majority of the entire Board of Directors of the Company
may  exchange  the Rights  (other than Rights owned by such person or group that
shall have become void),  in whole or in part, at an exchange ratio of one share
of Common Stock,  or a fractional  share of Preferred  Stock (or of a share of a
similar class or series of the Company's  preferred stock having similar rights,
preferences  and  privileges)  of  equivalent   value,  per  Right  (subject  to
adjustment).

      With certain  exceptions,  no  adjustment  in the  Purchase  Price will be
required until  cumulative  adjustments  require an adjustment of at least 1% in
such  Purchase  Price.  No fractional  shares of Preferred  Stock will be issued
(other than fractions which are integral  multiples of one  one-thousandth  of a
share of  Preferred  Stock,  which  may,  at the  election  of the  Company,  be
evidenced by depositary  receipts)  and in lieu  thereof,  an adjustment in cash
will be made  based  on the  market  price  of the  Preferred  Stock on the last
trading day prior to the date of exercise.

      At any time prior to the earlier of (i) the close of business on the tenth
(10th)  calendar  day  following  the Stock  Acquisition  Date (or, if the Stock
Acquisition  Date shall have occurred prior to the Record Date, the close of the
business on the tenth (10th) calendar day following the Record Date) or (ii) the
Final  Expiration  Date,  a majority  of the entire  Board of  Directors  of the
Company may redeem the Rights in whole,  but not in part, at a price of $.01 per
Right  (the  "Redemption  Price").  The  redemption  of the  Rights  may be made
effective at such time,  on such basis and with such  conditions as the Board of
Directors in its sole discretion may establish.  Immediately upon any redemption
of the Rights,  the right to exercise  the Rights  will  terminate  and the only
right of the holders of Rights will be to receive the Redemption Price.

      For so long as the Rights are then  redeemable,  the Company  may,  except
with respect to the Redemption Price,  amend the Rights Agreement in any manner.
After the Rights are no longer redeemable,  the Company may, except with respect
to the Redemption Price,  amend the Rights Agreement in any manner that does not
adversely affect the interests of holders of the Rights.

      Until a Right is exercised or exchanged, the holder thereof, as such, will
have no rights as a stockholder  of the Company,  including the right to vote or
to receive dividends.

      The form of Rights  Agreement  between the  Company  and the Rights  Agent
specifying  the terms of the  Rights,  which  includes  as Exhibit A the form of
Certificate of Designations of the Series A Junior Participating Preferred Stock

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of the Company, as Exhibit B the form of Summary of Rights to Purchase Shares of
Preferred  Stock  and as  Exhibit C the form of Right  Certificate,  and a press
release  issued by the Company on October  27, 2004 with  respect to the Rights,
are  attached  hereto as exhibits and  incorporated  herein by  reference.  This
summary  description  of the  Rights  does not  purport  to be  complete  and is
qualified in its entirety by reference to such exhibit.

      As of October 25,  2004,  there were  34,678,839  shares of the  Company's
Common Stock issued and outstanding,  and an additional 12,674,633 shares of the
Company's Common Stock reserved for issuance.  1,000,000 shares of the Company's
Preferred Stock have been reserved for issuance upon the exercise of the Rights.


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                                   SIGNATURES

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


Dated as of:  October 27, 2004


                                      PAR PHARMACEUTICAL COMPANIES, INC.
                                    ------------------------------------------
                                                 (Registrant)




                                    /s/ Dennis J. O'Connor
                                    ------------------------------------------
                                    Dennis J. O'Connor
                                    Vice President and Chief Financial Officer


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                                  EXHIBIT INDEX


EXHIBIT NO.                       DESCRIPTION
- -----------                       -----------

   4.1        Rights  Agreement,  dated as of  October  27,  2004,  between  Par
              Pharmaceutical Companies, Inc. and American Stock Transfer & Trust
              Company,  as Rights Agent,  which includes the Form of Certificate
              of Designations of Series A Junior  Participating  Preferred Stock
              as Exhibit A, the Form of Summary of Rights to Purchase  Shares of
              Preferred Stock as Exhibit B and the Form of Right  Certificate as
              Exhibit C.

   99.1       Press Release dated October 27, 2004