On July 14, 2025 Fresenius filed two IPR petitions challenging Regeneron’s patents related to aflibercept. Regeneron has not asserted that Fresenius infringes either of these patents in district court litigation; however,...more
On March 5, 2025, the Federal Circuit affirmed the grant of a preliminary injunction against the launch of Celltrion’s proposed EYLEA® (aflibercept) biosimilar CT-P42 in CAFC Case Nos. 24-2058 and 24-2147 (appealing from...more
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
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
On November 9, 2022, the PTAB issued final written decisions in IPR2021-00880 and IPR2021-00881, filed by Mylan on two Regeneron patents related to aflibercept—U.S. Patent Nos. 9,254,338 and 9,669,069. The PTAB ruled in...more
Last week, in the ongoing Immunex v. Sanofi patent litigation regarding Immunex’s claims of infringement against Sanofi and Regeneron’s Dupixent® (dupilumab) product, the Defendants moved for summary judgment of invalidity of...more