There's already a doctrine of laches that limits past damages. From http://www.wilmerhale.com/pages/publicationsandnewsdetail.aspx?NewsPubId=89731 http://www.w

There's already a doctrine of laches that limits past damages. From http://www.wilmerhale.com/pages/publicationsandnewsdetail.aspx?NewsPubId=89731 http://www.wilmerhale.com/pages/publicationsandnewsdetail.as... > Laches defenses have been successful in cases in which a patent owner knows about an infringement and then delays many years before bringing suit. Laches typically bars the recovery of any past damages but allows for the recovery of damages arising after the filing of the lawsuit