airplane-airbusa380.jpgLos Angeles – A U.S. District Court in Alexandria, Virginia ruled against Rolls-Royce Group in a patent infringement case that it brought against United Technologies Corp.’s Pratt & Whitney over fan technology.

U.S. District Judge Leoni Brinkema rejected the Rolls-Royce infringement claims after determining Pratt’s GP7200 Fan Stage is not in violation of a patent