Tagged as: PTAB

Proposed USPTO Fee Changes Could Impact PGR and IPR Filing Strategies Used by Biosimilars

The USPTO has proposed several fee changes for implementation in 2025. If implemented, these changes will increase filing fees for Inter Partes Reviews (IPRs) and Post Grant Reviews (PGRs) by 25% “to improve cost recovery.” Additionally, the PTO is proposing to allow IPR and PGR petitions to exceed the current…

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Aflibercept IPRs Update

On March 10, 2023, the PTAB denied institution of IPR2022-1524, filed by Apotex Inc. regarding Regeneron’s Patent No. 11,253,572.  As we previously reported, Apotex filed an IPR petition against the ’572 patent in September 2022, challenging claims that generally relate to methods for treating angiogenic eye disorders with a claimed dosing regimen…

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Celltrion Files IPR Petition on Aflibercept Patent

Last week, Celltrion filed an IPR petition, PTAB IPR2023-00462, seeking cancellation of claims 1-18 of U.S. Patent No. 10,464,992 (“the ’992 patent”), assigned to Regeneron Pharmaceuticals, Inc.  According to the Petition, the challenged claims of the ’992 patent “encompass a formulation comprising the VEGF inhibitor protein, aflibercept, which Regeneron markets…

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PTAB Grants Petitioner Celltrion’s Motion To Submit Supplemental Information in Tocilizumab IPR

The U.S. Patent Trials & Appeals Board (Board) recently issued an Order granting Celltrion’s motion to submit supplemental information in its IPR (2022-00578) against U.S. Pat. No. 8,580,264, owned by Chugai Seiyaku Kabushiki Kaisa, Genentech, Inc, and Hoffmann La Roche, Inc. As we previously reported, this is one of two…

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Regeneron’s Disclaimer of Aflibercept Formulation Patent Causes PTAB Denial of Institution of Celltrion PGR

On March 15, 2022, the Patent Trial and Appeal Board (PTAB) denied institution of post-grant review (PGR) proceedings initiated by Celltrion Inc. concerning Regeneron Pharmaceutical’s U.S. Patent No. 10,857,231 (the ’231 Patent) after Regeneron disclaimed the patent.  The ’231 patent has claims directed to formulations of aflibercept, the active ingredient…

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