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…
As previously reported, in February 2019, the Patent Trial and Appeal Board issued final written decisions in two IPR proceedings initiated by Sanofi challenging the U.S. Patent No. 8,679,487 (the ’487 patent) owned by Immunex. In IPR2017-01884, the Board held that the challenged claims of the ‘487 patent were unpatentable…
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…