A U.S. jury on Friday awarded Optis Wireless Technology LLC and several related companies US$300 million in damages after a second patent trial against iPhone maker Apple Inc.

       A jury had previously found that Apple had infringed five Optis wireless standard essential patents and awarded $506 million in damages, but U.S. District Judge Rodney Gilstrap in Marshall, Texas vacated that award in April and ordered a new trial to determine the amount of damages.

       Apple did not immediately respond to a request for comment.