CLEVENGER, Circuit Judge.
This appeal arose from a patent infringement suit brought by Prima Tek II, L.L.C., Highland Supply Corp., Highland Manufacturing and Sales Co., and Prima Tek I, L.L.C., against A-Roo Co. of Ohio and A-Roo Co. of Texas. Appellants A-Roo Co. of Ohio and A-Roo Co. of Texas appeal from the judgment of the United States District Court for the Southern District of Illinois, declaring the case to be exceptional under 35 U.S.C. § 285 due to...
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