Gatorade did not infringe on a rival’s trademark by using the phrase “the sports fuel company” in marketing food and beverages designed to improve athletic performance, a federal judge ruled.In a written opinion last week, U.S. District Judge Matthew F. Kennelly granted summary judgment in favor of The Gatorade Co. in a lawsuit brought by SportFuel Inc.SportFuel, a sports nutrition consulting firm based in Chicago, alleges Gatorade engaged in trademark infringement and unfair competition by using the …