Luxottica Group S.A. owns the trademark, Ray-Ban, and its subsidiary owns the trademark, Oakley, for sunglasses. According to Luxottica, International Malls’ subtenants were selling counterfeit Ray-Bans and Oakleys. Luxottica sued the landlords for trademark infringement. The landlords defended the action asserting that they aren’t the infringers; their subtenants are.