Patent Law Practice Center

Three References PLUS Predictable Variation Doom Utility Lighter Claims

Written by Brandon Baum , of baum legal and Practice Center Contributor.

Some have suggested that the Federal Circuit’s recent decision in Tokai Corp. v. Easton Enterprises, Inc., No. 2010-1057, -1116 (Fed. Cir. Jan 31, 2011), signals a raising of the bar to show nonobviousness post-KSR.  See, e.g., Quinn, KSR Fears Realized: CAFC Off the Obviousness Deep End; Patently-O, The Teeth of KSR: Obviousness on Summary Judgment.  This author disagrees.

The technology at issue in Tokai is straightforward: a child-safety mechanism for use on a “utility lighter,” the type of lighter used to light a barbecue or pilot light. The safety mechanism consists of a spring-loaded locking lever that must be unlocked with one finger while simultaneously depressing the trigger to light the flame with another.  Although two-finger safety mechanisms had been used in prior art cigarette lighters, they had never been used with a utility lighter prior to the patentee’s application. Nevertheless, the panel majority of Judges Lourie and Bryson upheld the district court’s determination on summary judgment that the patents-in-suit were obvious. (more…)