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Mark Sommers
+1 202 408 4064

901 New York Avenue, NW
Washington, DC 20001-4413

+1 202 408 4000
Fax +1 202 408 4400

Bar and Court Admissions

  • District of Columbia
  • Illinois
  • Massachusetts
  • New York


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

Mark Sommers


Mark Sommers practices exclusively in the areas of trademarks, domain names, dilution, unfair competition, and false advertising. Both domestically and internationally, Mr. Sommers provides a full range of services including litigation, counseling, clearance and infringement opinions, and licensing.

Mr. Sommers has litigated a broad range of trademark, unfair competition, domain name, name diversion, trade dress, and false advertising cases before the federal courts and the Trademark Trial and Appeal Board of the U.S. Patent and Trademark Office. He has also orchestrated many international strategies concerning the acquisition of rights and the enforcement of those rights.

In representing the interests of many European and Asian companies, Mr. Sommers has gained an appreciation of foreign companies’ sensitivity to U.S. practice and procedure. He frequently presents to both U.S. and international audiences and has authored numerous articles about trademarks, domain names, trade dress, and unfair competition.

Professional Recognition

  • Ranked among top D.C. trademark lawyers for contentious and non-contentious work in World Trademark Review 1000, 2011-2015.
  • Ranked among top 25 trademark experts in the world by in-house counsel and peers in Legal Media Group's Guide to the World's Leading Lawyers—Best of the Best, 2007, 2009, 2011, 2013; and among top U.S. trademark lawyers in Legal Media Group's Guide to the World's Leading Trademark Law Practitioners, 2006, 2008, 2010, 2012.
  • Recognized by The Legal 500 U.S. for trademark litigation work, 2007-2014.
  • Recognized as a leading lawyer by International Who's Who of Trademark Lawyers, 2004-2014.

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