Deanna Tanner Okun > Adduci, Mastriani & Schaumberg, LLP > Washington DC, United States > Lawyer Profile

Adduci, Mastriani & Schaumberg, LLP
United States

Work Department

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


  • Managing Partner


  • Former Chairman and Commissioner at the U.S. International Trade Commission
  • Former International Trade Counsel for the U.S. Senate
  • Former Associate at Hogan & Hartson


  • American Intellectual Property Law Association
  • American Bar Association
  • Customs and International Trade Bar Association (Board Member and Co-Chair, International Trade Committee)
  • Federal Circuit Advisory Council
  • Federal Circuit Bar Association
  • ITC Trial Lawyers Association
  • 2021-2022 Roster for USMCA Binational Panels (U.S.)
  • 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

Lawyer Rankings

United States > Intellectual property > Patents: litigation (International Trade Commission)

(Leading lawyers)

Deanna Tanner OkunAdduci, Mastriani & Schaumberg, LLP

Specialist ITC boutique Adduci, Mastriani & Schaumberg, LLP in Washington DC boasts an unparalleled track record in successfully fought ITC investigations. Throughout 2020, the firm has remained the most active adviser at the ITC as Deanna Tanner Okun, a former two-term Chairman of the Commission at the ITC and since January 2020 the firm’s managing partner, guided the team and its clients through the challenges caused by the Covid-19 outbreak. With its large team, including founders James AdduciLouis Mastriani and Tom Schaumberg, the firm offers an impressive range of technical expertise, and is also able to assist with trade secrets and trademark ITC matters. The group acts as standalone counsel or in cooperation with other firms in matters involving parallel federal court litigation. Paul Bartkowski left to found Bartkowski PLLC in January 2021. Lauren Peterson and Joshua Hartman, who joined the partnership in January 2020, continue to gain visibility in the market.