Software developer Ameranth says Apple has been aware of the patents allegedly violated.
Ameranth, a company that sells services and software to the gaming and hospitality industry, states that Passbook violates a total of four of its U.S. patents: No. 6,384,850, No. 6,871,325, No. 6,982,733 and No. 8,146,077.
The above patents deal with "Information management and synchronous communications system," which includes the likes of the ability to synchronize data among wireless, wired and Web-based systems pertaining to electronic menus, as well as reservations for businesses such as restaurants.
Ameranth refers to Passbook being able to download and store "airline boarding passes, hotel reservations, movie tickets, and event tickets", with the software developer also claiming that Apple is aware of the patents apparently being violated.
"One of the Ameranth patents-in-suit, U.S. Patent No. 6,384,850 -- the first patent issued in this Ameranth patent family -- was cited as a prior art reference in two Apple iPhone patents issued to named inventors Bas Ording and Steven P. Jobs," said the court filing. "Also, three of the patents in this Ameranth patent family have been asserted in several patent enforcement actions against Apple business partners."
The firm added that it is looking for triple the amount of damages it has endured due to Apple's alleged infringement.
iOS 6 introduced the Passbook app which allows iDevice users to synchronize, as well as save electronic copies of boarding passes, tickets, coupons and loyalty cards.
The aforementioned lawsuit doesn't represent the end of Apple's legal woes, though. Earlier on, Samsung, as promised, sued the world's most valuable company (and the world's largest hedge fund) over alleged patent infringements in the iPhone 5. That was preceded by a further blow to Apple in the form of its injunction against the sale of Samsung Galaxy Tab 10.1 getting overturned.