July 07, 2026
A West Virginia federal judge dismissed key counterclaims and defenses Tuesday that Amgen had raised against Regeneron's patent infringement lawsuit targeting bids by multiple would-be rivals to produce biosimilar versions of eye medication Eylea, preserving only arguments that Regeneron waited too long to pursue the patent.
February 12, 2026
Regeneron Pharmaceuticals Inc. and Samsung Bioepis Co. Ltd. have told a West Virginia federal court they reached an agreement to end patent infringement claims brought by Regeneron over a biosimilar of its eye medication Eylea.
June 26, 2025
The acting U.S. Patent and Trademark Office director rejected 21 petitions for Patent Trial and Appeal Board reviews on Wednesday, and the board's acting deputy chief judge denied another 12 where the acting director recused herself for the first time.
April 23, 2025
A West Virginia federal judge has vacated a permanent injunction that had blocked Biocon Biologics Inc. from selling a biosimilar to Regeneron's blockbuster eye medication Eylea in the U.S., citing a settlement agreement in the patent litigation allowing sales of the biosimilar in 2026.