Ted Talbot's excellent book "Concorde, A Designer's Life" recounts how the design office for Concorde's intakes were continually badgered for design details of the intake control system to help with the design of the Tornado. Things eventually went quiet when the German part of Panavia then patented the design, before then attempting to sue Filton for infringing "their" design. Great book - well worth a read.
Last edited by anson harris; 12th May 2020 at 13:26.