Subject: Technology: Burroughs Wellcome Sues Barr
Date: Published: 5/16/91 (25 lines)
Source: Wall Street Journal. Copyright Dow Jones & Co. Inc.

    Technology:
    Burroughs Wellcome Sues Barr

    RESEARCH TRIANGLE PARK, N. C. -- Burroughs Wellcome Co.,
 trying to prevent Barr Laboratories Inc. from marketing a
 generic AIDS drug, said it sued Barr for patent infringement.
    As previously reported, Barr last month applied to the
 U. S. Food and Drug Administration for approval to make a
 generic version of AZT, or zidovudine, challenging the
 exclusive U. S. marketing rights held by Burroughs Wellcome.
 Zidovudine is the only drug approved to treat AIDS, or
 acquired immune deficiency syndrome.
    Burroughs Wellcome said it "has addressed erroneous"
 claims that the patents were invalid many times before and
 that it "remains confident of its patent position."  The suit
 was filed in U. S. District Court in Raleigh, N. C. Barr is
 based in Pomona, N. Y. 

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