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The Federal Circuit’s decision in Eye Therapies, LLC v. Slayback Pharma, LLC provides further insight into the tools available for patent claim construction. The Federal Circuit had previously held that a patent’s...more
Case Name: Allergan USA, Inc. v. Sun Pharm. Indus. Ltd., No. CV 19-1727-RGA, 2022 WL 16921800 (D. Del. Nov. 14, 2022) (Andrews, J.) Drug Product and Patents-in-Suit: Viberzi® (eluxadoline); U.S. Patents Nos. 9,675,587 (“the...more
Case Name: Almirall, LLC v. Torrent Pharms., Ltd., Civ. No. 20-1373-LPS (D. Del. July 13, 2021) (Stark, J.) - Drug Product and Patent(s)-in-Suit: Aczone® Gel, 7.5% (Dapsone); U.S. Patent No. 9,517,219 (“the ’219 patent”)...more
After more than two decades of being the red-headed stepchild of patent infringement before the Federal Circuit, infringement under the doctrine of equivalents has made a dramatic comeback in the past few years, the Court...more
The Federal Circuit during 2019 and 2020 has issued a spate of decisions on the proper application of the Doctrine of Equivalents (see, e.g., UCB, Inc. v. Watson Laboratories Inc. and Galderma Laboratories, L.P. v. Amneal...more
The Federal Circuit has affirmed infringement under the doctrine of equivalents in a number of cases over the last few years. Briefly, the judicially created doctrine of equivalents is intended to expose those who adopt the...more
Infringement under the doctrine of equivalents (as a basis of a successful cause of action having renewed vigor before the Federal Circuit recently (see, e.g., "Galderma Laboratories, L.P. v. Amneal Pharmaceuticals LLC") is...more
Recently, the Federal Circuit has taken up issues relating to infringement under the doctrine of equivalents (DOE) and a related doctrine, prosecution history estoppel (PHE), that limits the scope of equivalents that can be...more
Although non-precedential, the Federal Circuit decision in Aptalis Pharmatech, Inc. v. Apotex Inc. is worth a read to see how the court “tiptoes” the “fine line between reading a claim in light of the specification, and...more