2016-1807, 2016-2280.

882 F.3d 1056 (2018)

POLARIS INDUSTRIES, INC., Appellant v. ARCTIC CAT, INC., Cross-Appellant.

United States Court of Appeals, Federal Circuit.

Decided February 9, 2018.

Attorney(s) appearing for the Case

J. DEREK VANDENBURGH , Carlson, Caspers, Vandenburgh, Lindquist & Schuman, P.A., Minneapolis, MN, argued for appellant. Also represented by ALAN GARY CARLSON , DENNIS BREMER.

JOSEPH HERRIGES, JR. , Fish & Richardson P.C., Minneapolis, MN, argued for cross-appellant. Also represented by JOHN CAMERON ADKISSON , ROBERT P. COURTNEY , CONRAD GOSEN.

Before Lourie, O'Malley, and Hughes, Circuit Judges.

Polaris Industries, Inc. ("Polaris") owns U.S. Patent No. 8,596,405 ("the '405 patent"), which is directed to all-terrain vehicles ("ATVs") having at least two seats arranged side-by-side. Polaris's competitor, Arctic Cat, Inc. ("Arctic Cat"), filed two petitions for inter partes review, challenging the patentability...

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