Don is the senior litigation partner in the California firm of Knobee Martens Olson & Bear, which has been named the best intellectual property law firm in the Western United States five years in a row in an international survey of intellectual property law practitioners conducted by Managing Intellectual Property Magazine. Don served as President of the AIPLA from 1995-96, and is currently a member of the Advisory Council of the Federal Circuit Court of Appeals. Recently, he was named one of "The Top Ten Patent Lawyers in the World" by PLC Global Counsel magazine, and one of "The Most Influential Attorneys in California" by California Business magazine.