Gatorade did not violate trademark law by using the phrase “the sports fuel company” in marketing food and beverages designed to improve athletic performance, a federal appeals court held.The 7th U.S. Circuit Court of Appeals last week declined to revive a lawsuit accusing The Gatorade Co. of trademark infringement and false designation of origin.The suit was filed by SportFuel Inc., a sports nutrition consulting firm based in Chicago that holds two registered trademarks for “SportFuel.”SportFuel …