An interesting 1st Circuit opinion extended a hotel’s common law trademark into territory encroaching upon an incontestable junior registered mark of a competing hotel.  In the case of Dorpan, S.L. v. Hotel Melià, Inc., Dorpan, a European hotel chain using the brand, Sol Melia, as a registered trademark faced off with the Hotel Melia “HMI” located … More Extending Use Under Trademark Law