Sommers, Mark


901 New York Avenue, NW
Washington, DC 20001-4413
Mark Sommers practices exclusively in the areas of trademarks, domain names, dilution, unfair competition, false advertising, cybersquatting, counterfeiting, and related areas of IP. He provides a full range of services in those areas, including U.S. federal court and Trademark Trial and Appeal Board (TTAB) of the U.S. Patent and Trademark Office (USPTO) litigation and appeals, strategic counseling, infringement and clearance opinions, portfolio management and prosecution, empirical research, intermediary liability, and damages.

Mr. Sommers has litigated a broad range of trademark, trade dress, product configuration, unfair competition, domain name, diversion, design, and false advertising cases. He has also orchestrated many domestic and international strategies concerning the acquisition of rights and the enforcement of those rights.

In addition to representing the interests of many top-tier U.S. brand owners, Mr. Sommers has also represented the interests of many European and Asian leading brand owners, where he has gained an appreciation of foreign companies’ sensitivity to U.S. practice and procedure. He frequently presents to both U.S. and international audiences, has authored numerous articles about trademarks, domain names, trade dress, and unfair competition, and regularly provides press commentary on high-profile, newsworthy trademark and related cases, developments, and issues.


  • LL.M., University of London, England, 1983
  • J.D., Northern Illinois University College of Law, 1982
  • B.A., Ohio Wesleyan University, 1978, Economics

Bar Admissions

  • District of Columbia
  • Illinois
  • Massachusetts
  • New York