The battle over the proper forum for patent infringement litigation regarding Dupixent® (Dupilumab) appears to have been resolved.  Last week, on May 1, 2017, Sanofi, Genzyme, and Regeneron voluntarily dismissed their Declaratory Judgment Complaint in the District of Massachusetts (Civ. No. 17-cv-10465).  The dismissal, however, does not resolve the underlying patent infringement dispute, which is

As we previously reported, Sanofi-Aventis U.S. LLC, Genzyme Corporation, and Regeneron Pharmaceuticals, Inc. filed a Declaratory Judgment Complaint against Amgen, Inc. and Immunex Corporation in the United States District Court for the District of Massachusetts on March 20, 2017, preemptively seeking a determination that Sanofi and Regeneron’s Dupixent® (dupilumab) product does not infringe U.S.

We reported last week that Sanofi-Aventis U.S. LLC, Genzyme Corporation, and Regeneron Pharmaceuticals, Inc. had filed suit in Massachusetts seeking a declaratory judgment that their Dupixent® (dupilumab) product does not infringe Amgen’s U.S. Patent No. 8,679,487 (“the ’487 patent”).  The litigation was filed on March 20, 2017.  In a one-two punch combination, Sanofi and Regeneron

Sanofi-Aventis U.S. LLC, Genzyme Corporation, and Regeneron Pharmaceuticals, Inc. (collectively “Plaintiffs”) filed a Complaint in the United States District Court for the District of Massachusetts seeking a declaratory judgment from the Court that the development, manufacturing, sale, and promotion of Dupixent® (dupilumab) does not infringe U.S. Patent No. 8,679,487 (“the ’487 patent”).  The ‘487 patent,