ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,024, issued on April 22, was assigned to ENDO OPERATIONS Ltd. (Dublin).

"Epinephrine formulations" was invented by Suketu Sanghvi (Kendall Park, N.J.), Vinayagam Kannan (Morris Plains, N.J.) and Matthew Kenney (New Haven, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Pharmaceutical compositions comprising epinephrine, methods of administration, and methods of making the same. Compositions may comprise at least one of an active agent, a pH raising agent, an antioxidant, a transition metal complexing agent, a pH lowering agent, a tonicity regulating agent, optionally a preservative, and optionally a solvent."

The patent was filed on Sept. 28, 2...