Software development company Ameranth has filed a patent complaint in the United States District Court for the Southern District of California against Apple (AAPL) over its Passbook service in iOS 6, AppleInsider reports. The company claims that Passbook violates four of its U.S. patents concerning “information management and synchronous communications system.” Ameranth, which sells software and services to the hospitality, gaming and food services industries, has asserted three of the patents in several other cases against Apple’s business partners, such as Fandango, OpenTable and Ticketmaster. As a result, the company is seeking triple the damages that it has sustained due to Apple’s “willful infringement.”