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Celltrion files IPR petition against Regeneron aflibercept patent

Jan 17, 2023

Celltrion filed a petition for inter partes review of Regeneron’s US 10,464,992, relating to Eylea® (aflibercept).  Celltrion has alleged the 992 patent is invalid on obviousness and anticipation grounds.  In August 2022, Regeneron sued Viatris (Mylan) for infringement of 24 patents relating to Eylea, including the 992 patent.