Sheldon H. Klein

Sheldon H. Klein Image
Direct: 202.295.2215

Support Staff

Angelina Mejia
Direct: 202.295.2211

For over 35 years, Sheldon Klein has represented clients in the areas of trademark, copyright, unfair competition, advertising law, and social media, handling matters involving IP availability and infringement opinions, portfolio management, litigation, licensing, and transactions.

Sheldon handles a wide range of IP issues. He conducts IP audits and due diligence investigations; drafts IP licenses and other agreements; and enforces IP rights via negotiation, litigation, and opposition and cancellation proceedings before the U.S. Patent and Trademark Office’s Trademark Trial and Appeal Board and foreign trademark offices.

Clients highly value the depth and breadth of Sheldon’s intellectual property experience and knowledge. Sheldon has taught IP law at George Washington University and chairs an annual seminar/webinar on advanced trademark law for the Practising Law Institute. He regularly writes about current issues and presents on IP law topics nationally and internationally.

Sheldon is a member of the executive committee (first vice president) and board of directors of the American Intellectual Property Law Association. In this position, he plays a key role in the governance of one of the world’s largest and most influential intellectual property bar associations.


  • Successfully defended Canadian company accused of trademark infringement; upon our contested motion, magistrate judge recommended dismissal for lack of jurisdiction; complaint dismissed with prejudice by plaintiff.
  • Obtained declaratory judgment of trademark non-infringement on behalf of a major Washington-based trade association after a threat by a key competitor just prior to launch of a major rebranding effort
  • Obtained relief for a major U.S. furniture manufacturer from rampant imports of counterfeit goods via litigation, U.S. Customs seizure/destruction of goods at their port of entry and at retail locations in multiple states, and seizure/destruction of goods at their point of manufacture in Taiwan
  • Obtained summary judgment, upheld on appeal (Ninth Circuit), against terminated franchisee who continued to use part of a famous international franchisor’s trademark
  • Obtained relief from multiple copyright infringements for the creator of a famous graphic work via litigation, and for the owner of a famous sculptural work via negotiation
  • Obtained relief for operator of popular social network/e-commerce Web site from multiple clone sites via cease and desist letters and DMCA takedown notices
  • Advised offshore operator of auction Web sites on trademark, copyright, and content issues
  • Handled multiple deceptive advertising cases on behalf of a major U.S. telecommunications company and a multinational medical device manufacturer in arbitration before the National Advertising Division of the Council of Better Business Bureaus
  • Conducted copyright audit for a famous U.S. author
  • Resolved a longstanding trademark dispute among two major nonprofit organizations via a creative licensing agreement
  • Manage international trademark portfolios for clients in a wide variety of industries
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