Sheldon Klein represents clients in the areas of trademark, copyright, unfair competition, advertising 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 and drafts IP licenses and other agreements. He also 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.

In October 2017, Sheldon became President-Elect of the American Intellectual Property Law Association (AIPLA). Since his election to the executive committee of AIPLA in 2015, Sheldon has played a key role in the governance of one of the world’s largest and most influential intellectual property bar associations.

Professional Activities

American Intellectual Property Law Association, President-Elect
International Trademark Association, Trademark Office Practices Committee, Member
Intellectual Property Constituency of the Internet Corporation for Assigned Names and Numbers (ICANN), Member
U.S. Patent and Trademark Office, Trademark Public Advisory Committee, Past Member
Bar Assn. of D.C., Patent, Trademark & Copyright Section, Past Chair

Honors and Distinctions

"Leading Trademark Lawyer," The International Who’s Who of Business Lawyers, 2007- 2017
“Leading Trademark Lawyer,” World Trademark Review, 2011-2013, 2015-2017
“Washington, DC Super Lawyer,” Super Lawyers, 2014-2017
“Top Lawyers” in Intellectual Property, Washingtonian Magazine, 2011, 2013