May 03, 2019
The Federal Circuit on Friday upheld the validity of a patent related to Endo Pharmaceuticals' opioid painkiller Opana ER, finding generic-drug maker Teva Pharmaceuticals had not shown the invention was obvious.
December 06, 2018
Actavis LLC and Endo Pharmaceuticals Inc. faced questions from a Federal Circuit panel on Thursday regarding whether someone of ordinary skill could successfully develop Endo's opioid painkiller Opana ER, amid Actavis' appeal of a ruling that Endo's Opana patent is valid.