Finnish mobile giant Nokia said on Wednesday it had filed lawsuits in the US, UK and Canada against rival Research In Motion (RIM), maker of the Blackberry, claiming it has breached patent agreements. In the suit filed on Monday in a California court, Nokia sought to enforce the ruling of a Swedish arbitration tribunal that said RIM can\'t sell products equipped with local area network technology (WLAN) without first agreeing on royalties with the Finnish company.