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PTAB institutes IPR on tocilizumab patent

Jun 3, 2022

The PTAB instituted an inter partes review filed by Fresenius Kabi against US Patent 9,750,752 (‘752 patent) owned by Chugai Seiyaku Kabushiki Kaisha and Hoffman-La Roche.  The ‘752 patent is directed at methods of treating giant cell arteritis by subcutaneously administering tocilizumab.  This is the sixth IPR instituted by PTAB regarding tocilizumab patents arising from Fresenius Kabi challenges.

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