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Biosimilars Patent Trial and Appeal Board Celltrion

Venable LLP

Celltrion Files IPR on Regeneron’s EYLEA® Patent

Venable LLP on

On January 15, 2025, Celltrion filed IPR2025-00456 against Regeneron’s U.S. Patent No. 11,084,865 (“the ’865 patent”), challenging claims 1-17, 19-42, 44-50 as anticipated and claims 1-50 as obvious....more

Goodwin

PTAB Issues Final Written Decisions Finding Claims of Tocilizumab-related Patents Invalid

Goodwin on

On August 29, 2023, the PTAB issued final written decisions in IPR2022-00578 and IPR2022-00579, filed by Celltrion on two patents related to tocilizumab — U.S. Patent Nos. 8,580,264 and 10,874,677, owned by Chugai Seiyaku...more

Goodwin

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

Goodwin on

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...more

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