Mark Robertson, 53, has joined Sutherland Asbill & Brennan’s Wash­ington office as a partner. He has experience in the hospitality industry, as well as in information technology, information services, intellectual property, electronic commerce, procurement and outsourcing law. Previously, he was senior vice president and assistant general counsel for Hilton Worldwide Inc. He earned his J.D. from the University of Southern California Gould School of Law.