05/22/2008 02:54:22 PM EST
Pfizer, Inc. v. Apotex, Inc., 480 F.3d 1348 (Fed. Cir. 2006)
A patented drug using amlodipine salt compounds was ruled invalid for obviousness, where the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art, under 35 U.S.C.S. § 103(a); a skilled artisan would have used a besylate salt.