Generic’s Counterclaims for Non-Infringement are Proper Despite Covenant Not to Sue From Brand

On April 9, 2014, in Purdue Pharmaceutical Products, L.P. v. TWi Pharmaceuticals, Inc., Civ. No. 12-5311 (D.N.J.), Judge Jose L. Linares of the United States District Court for the District of New Jersey ruled that a generic drug company who is not a first-filer has standing to assert a counterclaim for non-infringement despite the issuance…