Federal Circuit Clarifies Patent Obviousness after KSR
By Debbie Rosenbaum — Edited by Stephanie Weiner
Eisai Co. v. Dr. Reddy’s Laboratories, Ltd.
Federal Circuit, July 21, 2008, No. 2007-1397
Slip Opinion
On July 21, the Federal Circuit affirmed the United States District Court for the Southern District of New York’s ruling in favor of plaintiff Eisai Co., holding that the patent-in-suit, U.S. Patent No. 5,045,552, was non-obvious and was not obtained through inequitable conduct.
This case illustrates the Federal Circuit’s current test for chemical obviousness since the Supreme Court rejected the Federal Circuit’s application of the “teaching, suggestion, or motivation test” for obviousness in KSR Int’l Co. v. Teleflex Inc., 127 S. Ct. 1727 (2007) as too rigid, mandating a more flexible approach that takes ordinary creativity and skill into account. A brief background on KSR can be found at Patent Docs.
Kevin E. Noonan at Patent Docs welcomes the decision.
The Patent Hawk characterizes the court’s opinion as positing a “problem-reasoning-predictability” test for chemical obviousness.
Aaron F. Barkoff at Seeking Alpha makes the observation that patents on chemical compounds are holding up well even after KSR.