Pratt & Whitney sues Rolls Royce over patent

Pratt & Whitney sues Rolls Royce over patent
In a continuing battle over engine part designs, jet engine maker Pratt & Whitney says it has filed a federal lawsuit accusing Rolls Royce of misleading the U.S. Patent and Trademark Office to obtain a patent. Rolls Royce – United States Patent and Trademark Office – United States – Law – Intellectual Property