Carstens & Cahoon, a full-service intellectual property law firm based in Dallas, added Stephen Liu as its newest partner. Liu started his law practice with Carstens & Cahoon and is returning after a short stint with another law firm.

Liu’s practice focuses on all areas of patent law, including prosecution, litigation and counseling, as well as trademarks, copyrights and trade secrets. He is a member of the State Bar of Texas and a registered patent attorney before the U.S. Patent and Trademark Office. Throughout his career, he has represented clients ranging in size from multinational corporations to sole proprietors.