Our People

Burton S. Ehrlich


Phone: (312) 427-1300 | Fax: (312) 427-6663

Burton S. Ehrlich is a partner at the Chicago office of Ladas & Parry and chairs the litigation department for the firm.

Throughout his career of over 30 years, Burt has helped clients consider issues in all phases of intellectual property matters, including litigation and adversarial proceedings in Federal District Courts throughout the U.S., in the U.S. Court of Appeals for the Federal Circuit, in the United States Patent & Trademark Office, and in assisting in foreign litigation and adversarial matters, some of which reached the highest courts of said jurisdictions.

He has counseled foreign and domestic clients and litigated complex patent, trademark, copyright, trade secret, unfair competition, advertising, franchising, licensing and antitrust matters. He has been involved in hundreds of Federal Court cases and Patent and Trademark Office adversarial matters. In Federal Court cases alone he has been lead counsel in well over 100 Federal cases and well over 100 Patent and Trademark Office opposition or cancellation proceedings.

Before joining Ladas & Parry, Burt was a managing partner at Brezina and Ehrlich, where he practiced for over 15 years, later also being co-managing partner at another intellectual property firm and still later he was a partner at a 150-lawyer firm where he was the Chairman of the Intellectual Property Department. After joining Ladas & Parry he quickly rose to full partner status and Chair of its Intellectual Property Litigation Department.


John Marshall School of Law – LLM in Intellectual Property Law, with high honors, 1988
Chicago Kent College of Law – JD with high honors, 1978
DePaul University – MBA with distinction and high honors, 1975
Northeastern Illinois University – BA with high honors, 1974

Practice Areas
  • U.S. Litigation
  • European Litigation
  • Trademarks
  • Patents
  • Copyrights
  • Trade Secrets
  • Licensing

U.S. Supreme Court
U.S. District Court for the Northern District of Illinois (including Trial Bar)
U.S. Court of Appeals for Seventh Circuit
U.S. Court of Appeals for the Federal Circuit
Illinois Supreme Court
Former Court of Customs & Patent Appeals
Trademark Trial & Appeal Board

Associations & Organizations

International Trademark Association
American Bar Association
Chicago Bar Association
Illinois State Bar Association