News & Analysis as of

Samsung Bioepis Regeneron Patent Litigation

Venable LLP

Samsung Bioepis and Formycon’s EYLEA® IPRs Discretionarily Denied Institution Among Wave of Fintiv Denials; Regeneron Files Second...

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On June 2, 2025, the Patent Trial and Appeal Board (“Board”) issued decisions denying institution of Samsung Bioepis’s IPR2025-00176 and Formycon’s IPR2025-00233 against claims 1–12, 14–17, 19, 20, 22–36, 39–42, 44, 45, and...more

Goodwin

Recent PTAB Developments for Regeneron’s Aflibercept Formulation Patent

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Earlier this month, a Patent Trial and Appeal Board (“PTAB”) panel denied institution of two petitions that were filed separately by Samsung Bioepis (IPR2025-00176) and Formycon (IPR2025-00233) for inter partes review (“IPR”)...more

Venable LLP

Federal Circuit Affirms Preliminary Injunctions in EYLEA® Biosimilar Litigations Against Samsung Bioepis and Formycon

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On January 29, 2025, the CAFC issued opinions affirming the preliminary injunctions issued against biosimilars of Regeneron’s EYLEA® (aflibercept): Samsung Bioepis’s Opuviz™ (aflibercept-yszy) (CAFC Case Nos. 24-1965,...more

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Biosimilar Updates: EYLEA® IPR Filings, Herceptin® Biosimilar Hercessi™ Launch, Stelara® Biosimilar Yesintek™ Approval

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On November 20, 2024, Samsung Bioepis filed IPR2025-00176 against Regeneron’s U.S. Patent No. 11,084,865 (“the ’865 patent”), challenging as obvious 48 claims (claims 1-12, 14-17, 19-20, 22-36, 39-42, 44-45, and 47-55)...more

Venable LLP

PTAB Issues Final Written Decision Invalidating Regeneron’s EYLEA® Patent (IPR2023-00442)

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On June 14, 2024, the PTAB issued a Final Written Decision (FWD) in Samsung Bioepis’s IPR2023-00442 (“the -00442 IPR) determining that the challenged claims of Regeneron’s U.S. Patent No. 10,130,681 (the ’681 patent) that...more

Goodwin

Updates on Aflibercept BPCIA Litigation - January 2024

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On January 10, 2024, Regeneron Pharmaceuticals, Inc. (“Regeneron”) filed a Complaint in the U.S. District Court for the Central District of California against Amgen Inc. (“Amgen”) alleging infringement of 32 patents under the...more

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Regeneron’s Disputes with Celltrion, Samsung Bioepis, and Formcycon on Service and Personal Jurisdiction in Aflibercept BPCIA...

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As we have previously reported, in November 2023 Regeneron Pharmaceuticals, Inc. (“Regeneron”) filed complaints against Celltrion,  Samsung Bioepis and Formycon (collectively, “the Defendants”) in the U.S. District Court for...more

Goodwin

Regeneron Sues Samsung Bioepis for Proposed Biosimilar of EYLEA in West Virginia District Court

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​​​​​​​Regeneron Pharmaceuticals, Inc. (“Regeneron”) filed a Complaint on November 22 against Samsung Bioepis Co., Ltd. (“Bioepis”) in the U.S. District Court for the Northern District of West Virginia, alleging infringement...more

Goodwin

Aflibercept IPR Updates - July 2023

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​​​​​​​On July 19 and 20, 2023, the PTAB granted institution of IPR2023-00442, filed by Samsung Bioepis regarding Regeneron’s Patent No. 10,130,681 which is directed to treating angiogenic eye disorders with alibercept, and...more

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