View Representative Patents, Trademarks, and Cases.Kolisch Hartwell, P.C. is an intellectual property (IP) law firm that started business in 1952. We serve clients from our main office in Portland, Oregon, and from our branch office in Palo Alto, California. Our services include: Intellectual Property Patents Trademarks Copyrights Trade Secrets International Agencies International Patents and Trademarks Licensing LitigationWe also offer start up business services. All of our Attorneys have represented clients in intellectual property litigation before the U.S. Supreme Court,International Trade Commission and the Federal Circuit.We are here to help you, call today to schedule your next appointment.