Apple faces a bill of $862m after losing a patent lawsuit.<br />The case relates to use of the technology in the iPhone 5s, 6 and 6 Plus - but an additional lawsuit making the same claim against Apple's newest models, the 6S and 6S Plus, has also been filed.<br />In court papers, the university claimed Apple ignored its offers to license the patent, which would mean paying a fee for its continued use.<br />Despite recent well-publicised truces between some big tech firms, fierce patent battles are still being fought in courts globally.<br />Last week, a judge threw out claims by graphic card specialist Nvidia that Samsung and others had infringed three of its patents.
