Airbus Seeks To Avoid Patent Royalties On Winglets

Airbus Seeks To Avoid Patent Royalties On Winglets: Planemaker Sues Aviation Partners Saying Patent Is Invalid Airbus has filed a lawsuit in Austin, TX, against Boeing partner Aviation Partners Inc., claiming its patent on winglets is invalid, and that the European planemaker should not have to pay royalties for the "sharklets" it plans to use on the A320neo aircraft.