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 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
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
On April 15, 2025, Biocon announced it reached a settlement agreement with Regeneron, dismissing CAFC Appeal No. 24-2002 and Case No. 1:22-cv-00061 (N.D.W. Va.) / MDL 1:24-md-03103 (N.D.W. Va.) and allowing the...more
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
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
There have been several recent developments in the PTAB with respect to Regeneron’s aflibercept-dosing patents. On July 8, Regeneron voluntarily dismissed its appeals to the Federal Circuit (Case Nos. 2023-1395 and...more
As we settle into 2024, we reflect on the significant legal developments of 2023 that hold potential impact on the biologics and biosimilars market. The following is a recap of some of the top five legal decisions and...more
On August 18, Samsung Bioepis Co., Ltd. (“Samsung Bioepis”), filed a petition for Inter Partes Review, IPR2023-01312, challenging the validity of claims 1-18 of U.S. Patent No. 10,464,992, assigned to Regeneron...more
We previously reported on the opening post-trial briefs in Regeneron’s BPCIA case against Mylan and Biocon (who was added as a defendant after the original defendant, Mylan, transferred its rights to the aflibercept...more
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
Last week, Samsung Bioepis filed an IPR petition challenging claims of U.S. Patent No. 11,253,572 (“the ’572 patent”), owned by Regeneron Pharmaceuticals. According to the petition, the claims are directed to the use...more
Celltrion and Samsung recently filed IPR petitions challenging claims of Regeneron patents directed to treating angiogenic eye disorders with aflibercept. Specifically, Celltrion and Samsung have each filed petitions...more
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...more
As we previously reported, Mylan recently filed three IPR petitions challenging claims of Regeneron patents directed to treating angiogenic eye disorders with aflibercept, the active ingredient in Regeneron’s Eylea...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
Mylan Pharmaceuticals Inc. recently filed an IPR petition, PTAB-IPR2023-00099, seeking cancellation of claims 1-3 of U.S. Patent No. 10,857,205, assigned to Regeneron Pharmaceuticals, Inc. According to the petition,...more
On October 26, 2021, the Patent Trial and Appeal Board (PTAB) granted Regeneron’s petition to institute an inter partes review (IPR) of Novartis’s patent U.S. Pat. No. 9,220,631 (“the ’631 patent”), which covers a pre-filled...more
On April 5, Immunex (a wholly-owned subsidiary of Amgen) filed a complaint against Sanofi and Regeneron related to Sanofi and Regeneron’s Dupixent® (dupilumab) product, which received FDA approval last week. Immunex’s...more
Sanofi and Regeneron announced yesterday that their Dupixent® (dupilumab) product has received FDA approval for the treatment of adults with moderate-to-severe atopic dermatitis (AD) whose disease is not adequately controlled...more
This week Sanofi-Aventis and Regeneron Pharmaceuticals took aim at Amgen’s U.S. Patent No. 8,679,487 on two fronts, filing a declaratory judgment action in district court and a petition for inter partes review in the U.S....more