Last week, in a precedential decision, the U.S. Court of Appeals for the Federal Circuit (“Federal Circuit”) clarified the law on comparison prior art in design patent cases. In the decision, captioned Columbia Sportswear North America, Inc. v. Seirus Innovative Accessories, Inc., No. 2021-2299, 21-2338 (Sept. 15, 2023), the Federal Circuit provided guidance on the types of prior art that can be reviewed by courts and juries in the comparative prior art stage of the infringement analysis of design patent cases. In the initial case, Columbia Sportswear North America, Inc. (“Columbia”) sued Seirus Innovative Accessories, Inc. (“Seirus”) for infringing U.S. Design Patent No. D657,093 (“the D’093 Patent”) via sales of its products containing HeatWave™ liner material, as illustrated side-by-side below.
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