Apple has been sued by a Texas company that accused the iPhone maker of stealing its technology to create its lucrative mobile wallet, Apple Pay.

In a complaint made public on Thursday, Fintiv said Apple Pay's key features were based on technology developed by CorFire, which Fintiv bought in 2014, and now used in hundreds of millions of iPhones, iPads, Apple Watches and MacBooks.

Apple did not immediately respond to requests for comment.