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Bristol-Myers Squibb Files Patent Infringement Complaint Against AstraZeneca Regarding Anti-PD-L1 Antibody Product

On April 25, 2023, Bristol-Myers Squibb (“BMS”) filed a complaint in the District of Delaware against AstraZeneca related to AstraZeneca’s anti-PD-L1 antibody product, IMFINZI (durvalumab), alleging willful infringement of U.S. Patent No. 9,402,899 (“the ’899 patent”).  BMS alleges that the ’899 patent covers “Nobel Prize winning methods of treating cancer”…

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