The Situation: In a Hatch-Waxman litigation, the claims recite oxymorphone with less than 0.001% of an impurity called 14-hydroxymorphinone. The prior art includes confidential communications from the FDA to oxymorphone...more
Introduction - In proving a patent invalid (or infringed), all claim limitations must be considered. A recent case illustrates this maxim for both derivation under 35 U.S.C. § 102(f) and obviousness under 35 U.S.C. §...more