Don is a partner in the Washington, DC office of Finnegan, Henderson, where he has worked in all phases of patent law, including prosecution, licensing, litigation, validity and infringement studies, and counseling. He has litigated numerous cases in the federal district courts, and the New York Times reports that he has argued more Federal Circuit cases than any other litigator in the U.S. Don is a past President of the AIPLA, a past Chair of the ABA Section of Intellectual Property Law, and a member of the ABA House of Delegates since 2002. He served as Chairman of the Federal Circuit Advisory Committee from 1982-92 and served on the PTO Advisory Commission on Patent Law Reform in 1991-92. Don is a Fellow of the American College of Trial Lawyers and a 2004 inductee to the American Academy of Appellate Lawyers. He is a co-author of Court of Appeals for the Federal Circuit: Practice and Procedure, is a past co-author of Patent Law Perspectives, and has lectured extensively on patent law. He was the NJIPL Jefferson Medal recipient for 2004 and International Lawyer of the Year 2005 for Patents by Who's Who Legal.