In the News

In Trademark Battle Against Former U.S. Marketing Agent Haynes and Boone Prevails for Chinese IP Firm

In a dispute litigated from California to Oregon to the People’s Republic of China, Haynes and Boone, LLP lawyers have successfully defended a Chinese IP Firm’s trademark against the claims of its former U.S. marketing partner.

The latest victory for firm client AFD China Intellectual Property Law Office (AFD China) came March 28 after a three-day trial in an Oregon federal district court when a jury decided the former marketing agent, AFD USA, had no right to claim ownership of the “AFD” mark because AFD China was the first to use it in U.S. commerce. >>

Glenn E. Westreich


Silicon Valley

525 University Avenue
Suite 400
Palo Alto, California 94301-1918
T +1 650.687.8840
F +1 650.687.8740

Areas of Practice


  • J.D., University of California, Berkeley School of Law, 1981
  • B.A., Political Science, University of California, Berkeley, 1978

Bar Admissions

  • California, 1981

Court Admissions

  • U.S. District Court for the Northern District of California
  • U.S. District Court for the Central District of California
  • U.S. District Court for the Southern District of California
Glenn E. Westreich

Glenn Westreich is a litigation partner in the firm's Silicon Valley office. He has more than 30 years of experience representing technology companies in trials in the federal and state courts and International Trade Commission.

Glenn has represented clients in litigation involving a broad range of issues, including patent, copyright and trademark infringement, trade secrets, bankruptcy, and general commercial litigation.

Representative recent matters include the following:

  • Prosecution of patent infringement cases involving electronic devices, search and catalogue aggregation software, plasma etch reactors for semiconductor fabrication systems, and digital scanning technology.
  • Defense of patent infringement and trade secret misappropriation cases involving digital editing and transmission of images, electronic books, optical endpoint detection systems, integrated circuits and related software, and underground cable locators.
  • Prosecution and defense of breach of contract claims regarding provision of Internet services totaling more than $200 million.
  • Counseling and enforcement of patent portfolios in the areas of search technology, online advertising, and digital media.

Glenn was selected for inclusion in Northern California Super Lawyers, 2011-2012.

Speeches and Publications

Glenn is a frequent speaker on patent and technology issues. Recent addresses include presentations at the Advanced Patent Law Institute and IP Counsel Summit in Silicon Valley. In December 2010, Glenn moderated a panel titled "Patent Defense 2.0; New Models in Patent Disputes" at the Advanced Patent Law Institute in Palo Alto, CA.


  • American Bar Association
  • Bar Association of San Francisco
  • Member, Planning Committee, USC Intellectual Property Institute