In this case, Wash World appealed a district court's decision finding infringement of Belanger's patent for a vehicle spray washer with a lighted spray arm. The appellate court addressed issues of claim construction, ultimately finding that WASH WORLD had forfeited most of its arguments by not properly raising them in the lower court. However, the court agreed with Wash World regarding the damages award, finding insufficient evidence to support lost profits from unpatented "convoyed sales." Consequently, the Federal Circuit affirmed the infringement finding but vacated and remanded the damages portion, instructing the district court to reduce the award by approximately $2.6 million.