Adduci, Mastriani & Schaumberg LLP

James Ton-that

James Ton-that
t: 202.467.6300
f: 202.466.2006
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  • ITC Trial Lawyers Association
  • American Bar Association
  • Federal Circuit Bar Association
  • American Intellectual Property Law Association
  • New York State Bar Association


  • George Washington University Law School, J.D., with honors
  • University of North Carolina at Chapel Hill, M.S.P.H.
  • Duke University, B.S.


  • Spanish (Proficient)
  • Portuguese (Basic)
  • Vietnamese (Basic)


  • District of Columbia
  • New York
  • U.S. Patent and Trademark Office

Giang “James” Ton-that is an international trade and intellectual property attorney practicing Section 337 litigation and customs law.  He has worked with clients in a variety of industries, including mobile communications devices and chipsets, television tuners, memory devices, tires, and consumer electronics and accessories.

James’s litigation practice focuses on Section 337 investigations at the U.S. International Trade Commission (“ITC”) on matters involving patents, trademarks, and trade dress. He has also worked on issues appearing before the Court of International Trade, federal district courts, and the Court of Appeals for the Federal Circuit.  James has experience in all aspects of Section 337 investigations, including researching and drafting dispositive motions and briefs, assisting with discovery efforts, analyzing complex Section 337 issues, evaluating available remedies, and drafting hearing submissions such as pre- and post-hearing briefs.

Prior to joining the firm, James clerked at the Office of Unfair Import Investigation at the ITC.  James also served as a judicial intern for Chief Administrative Law Judge Charles E. Bullock at the ITC and the Honorable Beryl A. Howell at the United States District Court for the District of Columbia.  In law school, James was an active member of the Student Intellectual Property Law Association, served as vice president for the Asian Pacific American Law Students Association, and worked as a student attorney for George Washington’s Vaccine Injury Clinic.  James was also a member of the Federal Circuit Bar Journal, where his note was selected for publication, and the George Washington Law Moot Court Board.

James volunteers for the DC Volunteer Lawyers Project, where he helps survivors of domestic violence obtain civil protection orders, also known as “stay-away” orders, and represents his clients in D.C. Superior Court hearings.

Adduci, Mastriani & Schaumberg, L.L.P. is a Washington D.C. law firm and internationally recognized leader in the field of international trade law with an emphasis on Section 337 intellectual property litigation before the United States International Trade Commission (ITC).  Founded in 1981, the firm has over 30 years of experience practicing before the ITC, all other federal agencies involved in international trade, the United States Court of International Trade, and federal district and appellate courts.  As part of its Section 337 practice, the firm has participated in approximately one-third of all investigations instituted in the last ten years.  In other areas of international trade law, the firm represents clients in antidumping and countervailing duty proceedings, as well as advises clients on Customs valuation and classification, and on country of origin, duty preference programs, sanctions, and export control issues. The firm also advises clients on trade policy issues, including import and export opportunities and barriers, enforcement, and regulatory hurdles.  In addition to its international trade practice, the firm represents clients in a broad range of intellectual property disputes and counsels them on licensing and enforcement.

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