Adduci, Mastriani & Schaumberg LLP

Deanna Tanner Okun

Deanna Tanner Okun
t: 202-467-6300
f: 202-466-2006
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  • Federal Circuit Advisory Council
  • American Intellectual Property Law Association
  • Board Member, Federal Circuit Bar Association
  • American Bar Association
  • ITC Trial Lawyers Association
  • Trade Policy Forum
  • Washington International Trade Association
  • The Association of Women in International Trade (WIIT)


  • Duke University School of Law, J.D., with Honors
  • Executive Editor, Alaska Law Review
  • Utah State University, B.A., magna cum laude


  • District of Columbia
  • Pennsylvania (Inactive)

Deanna Tanner Okun is an international trade lawyer providing legal and strategic advice to steer companies through the intersection where innovation confronts barriers, such as intellectual property theft, unfair trade practices, or regulatory hurdles.

Deanna has extensive experience as a top administrator, regulator, enforcer, legislative aide, and lawyer. She served two terms as Chairman during her twelve years of service as a member of the U.S. International Trade Commission (ITC). Prior to her appointment to the ITC, she served as counsel for international affairs to U.S. Senator Frank Murkowski, Chairman of the Energy and Natural Resources Committee and senior member of the Finance and Foreign Relations Committees, and practiced international trade law with a large DC-based law firm. 

Deanna was appointed to the Federal Circuit Advisory Council in 2013. In 2012, she was named the Outstanding Woman of the Year by the Association of Women in International Trade, a chapter of the Organization of Women in International Trade. During her tenure at the ITC, Deanna was nominated to be Deputy United States Trade Representative.

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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