On November 17, 2025 Formycon AG (“Formycon”) announced development of a dupilumab biosimilar, FYB208, referencing Regeneron and Sanofi’s DUPIXENT. Dupilumab is a monoclonal antibody therapy designed to treat immunological disease by blocking interleukin 4 and interleukin 13 receptor signaling-induced type 2 inflammation. DUPIXENT is approved for the treatment of asthma,…
On November 11, 2025, Sanofi and Regeneron announced that the FDA accepted for priority review its supplemental biologics license application (“sBLA”) for Dupixent (dupilumab) in the treatment of adults and children aged 6 years and older with allergic fungal rhinosinusitis (“AFRS”), with a target action date of February 28, 2026….
In the last few weeks, Health Canada issued several decisions concerning biologics. On October 17, Health Canada approved, via a Notice of Compliance, Biocon Biologics Ltd.’s YESINTEK (ustekinumab injection) and YESINTEK I.V. (ustekinumab for injection, solution for intravenous infusion). YESINTEK and YESINTEK I.V. are biosimilars to Janssen Biotech, Inc.’s STELARA…
On June 9, 2025, biosimilar manufacturers Samsung Bioepis and Alvotech announced separate deals to expand their respective offerings in Japan and Europe. Samsung Bioepis announced a licensing, development, and commercialization agreement with NIPRO Corporation for multiple biosimilar candidates in Japan. One of these candidates is SB17, a biosimilar of Janssen’s…
Last week, Regeneron Pharmaceuticals, Inc. and Sanofi announced that the FDA has accepted a Priority Review of the supplemental Biologics License Application (sBLA) for DUPIXENT (dupilumab) 300 mg weekly to treat patients aged 12 years and older with eosinophilic esophagitis (EoE). EoE is a chronic, immune-mediated, atopic inflammatory condition of…
Yesterday, the PTAB issued final written decisions in two IPR proceedings (IPR2017-01884 and IPR2017-01879) it instituted on February 15, 2018 against U.S. Patent No. 8,679,487 (the ’487 patent), held by Immunex. The ’487 patent is directed to isolated human antibodies that compete with a reference antibody for binding to human interleukin-4 (IL-4) receptor. …
Below we provide updates in three pending litigations. First, in an update on the Amgen v. Coherus appeal regarding Coherus’s biosimilar application for pegfilgrastim, Amgen filed its opening brief on August 20. Amgen’s statement of the issues reads: 1. Whether the district court erred in dismissing Amgen’s Complaint, with prejudice, based…
Following up on our previous coverage of Immunex’s patent infringement suit against Sanofi related to Immunex’s Dupixent® (dupilumab) biologic, Judge Otero recently denied Sanofi’s motion for summary judgement of invalidity based on indefiniteness of the claim terms “competes” and “binding affinity (Ka).” Sanofi criticized Immunex’s ’487 patent for failing to…
Pegfilgrastim litigation We had previously covered Judge Stark’s grant of Coherus’s motion to dismiss Amgen’s complaint alleging infringement of the ‘707 patent in Amgen v. Coherus. Today, Judge Stark entered judgment against Amgen and dismissed the case. In the Amgen v. Mylan litigation earlier covered here, Mylan recently filed a…
In the ongoing Immunex v. Sanofi patent litigation regarding Immunex’s claims of infringement against Sanofi and Regeneron’s Dupixent® (dupilumab) product, Immunex has filed a reply brief in support of its motion to stay the litigation pending Inter Partes Review of U.S. Patent No. 8,679,487 (“the ‘487 patent”), which Sanofi has opposed. Sanofi filed three IPR petitions on…