Subscribe | UPI Odd Newsletter Subscribe WASHINGTON, March 27 (UPI) -- The U.S. Transportation Security Administration violated federal law by using a "SimpliFLY" slogan embraced by a Utah airport, a lawsuit alleges. USA Today said Friday that a lawsuit filed by the Salt Lake City International Airport claims TSA officials allegedly committed trademark infringement through a 2007 campaign that encouraged passengers to neatly pack their carry-on luggage. Advertisement Airport officials allege the "SimpliFLY" slogan used in the TSA campaign has been in use at the Salt Lake City site since 2003. The slogan represents the airport's toll-free call service for questions from travelers. But Mark Janis, an intellectual-property law professor at the University of Iowa, said the lawsuit filed this week in a federal court in Utah is unique in regards to trademark suits. Janis told USA Today most trademark infringement cases involve a defendant who allegedly violates a trademark while attempting to sell something. "The TSA," Janis said, "isn't trying to promote a service or product."