https://www.biosimilarsip.com/2017/04/12/immunex-files-patent-infringement-suit-dupixent-dupilumab-seeks-dismiss-transfer-sanofi-regenerons-prior-dj-complaint/
Immunex Files Patent Infringement Suit Over Dupixent® (Dupilumab) and Seeks to Dismiss or Transfer...
Sep 10, 2020 - As we previously reported, Sanofi-Aventis U.S. LLC, Genzyme Corporation, and Regeneron Pharmaceuticals, Inc. filed a Declaratory Judgment Complaint
patent infringement suitimmunexfilesdupilumabseeks