Law360, New York (August 25, 2008) -- Endo Pharmaceuticals Inc. and Penwest Pharmaceuticals Co. have accused Sandoz Inc. of patent infringement in their latest suit to keep a generic version of painkiller Opana ER off the market.
In a complaint filed Friday in the U.S. District Court for the District of Delaware, Endo and Penwest claim Sandoz infringed the patent for Opana when it filed an abbreviated...
