Federal Circuit Reverses and Remands District Court Ruling in Obviousness-type Double Patenting Case By Kassity Liu – Edited by Joey Seiler Boehringer Ingelheim Int’l. v. Barr Laboratories, Inc., No. 2009-1032 (Fed. Cir. 2010). Opinion The Federal Circuit reversed and remanded the District Court for the District of Delaware, which had ruled that U.S. Patent No. 4,866,812, owned by the appellant Boehringer, was invalid because Boehringer’s terminal disclaimer did not overcome obviousness-type double patenting with respect to an earlier expired patent, ...
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