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Biosimilars Inter Partes Review (IPR) Proceeding Celltrion

Venable LLP

Celltrion Files IPR on Regeneron’s EYLEA® Patent

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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

Venable LLP

The First Biosimilar Disputes at the Unified Patent Court (UPC)

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As the era of biologics and biosimilar litigations heats up in the United States, Europe’s Unified Patent Court (UPC) is also taking center stage with the first two biosimilar disputes filed in March and April....more

Goodwin

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

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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

Biosimilar IPR Appeal Updates

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Following the Celltrion and Pfizer settlements of the trastuzumab litigation, the Federal Circuit granted the request of the Director of the PTO to intervene under 35 U.S.C. § 143 (i.e., defend a PTAB decision when a...more

Goodwin

Celltrion Files Two Petitions for IPR on Genentech’s Herceptin Patent

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Earlier this week, Celltrion filed two petitions for inter partes review of Genentech’s U.S. Patent No. 6,407,213. According to Celltrion’s petitions, the patent is directed to humanized antibodies. ...more

Goodwin

Celltrion Files Two Additional Petitions for IPR of Genentech’s Trastuzumab Patents

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Celltrion has filed two additional petitions for inter partes review of Genentech patents related to trastuzumab: IPR2017-01139, challenging U.S. Patent 6,627,196, and IPR2017-01140, challenging U.S. Patent 7,371,379....more

Goodwin

Celltrion Files Two Additional Petitions for IPR on Genentech’s Trastuzumab Patents

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Celltrion has filed petitions for inter partes review of two patents related to Genentech’s trastuzumab: IPR2017-01121, challenging U.S. Patent 7,846,441, and IPR2017-01122, challenging U.S. Patent 7,892,549. According to...more

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