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Claudia Hartleben Dunsch focuses her practice on international trade and investment, representing global companies in international trade litigation and anti-dumping, countervailing duty, and other trade enforcement administrative proceedings before the U.S. Department of Commerce and U.S. International Trade Commission in a wide range of industries, including steel, forestry, and energy.

Claudia also represents private and sovereign clients before international dispute resolution tribunals under various rules and arbitral institutions, including ICSID and ICC and in ad hoc arbitrations pursuant to UNCITRAL arbitration rules. Her experience includes matters in the oil and gas, mining, and real estate industries.

Claudia’s pro bono work includes representation of asylum-seekers, including conducting front-line interviews and counseling to detained migrants, and counseling on D.C. landlord-tenant matters.


  • International trade litigation
  • Anti-dumping proceedings
  • International investment disputes
  • International arbitration and dispute resolution
  • Venture capital and emerging businesses



  • Secured lowest anti-dumping margin in on behalf of Italian steel company in first administrative review of Certain Carbon and Alloy Steel Cut-To-Length Plate from Italy
  • Secured exclusions from Section 301 import duties on behalf of global manufacturer.°
  • Represented investor in an investment treaty arbitration against a Latin American State.°
  • Represented a state oil company in an ICC arbitration over a contractual services agreement.°

°The above representations were handled by Ms. Hartleben prior to her joining Greenberg Traurig, LLP.

Recognition & Leadership

  • Member, Young International Council for Commercial Arbitration Mentoring Program, 2015-Present
  • Member, Latino Alumni Association of the Washington College of Law, 2014-Present
    • Board Member
  • American Society of International Law, Women’s Mentoring Program
  • Member, Hispanic Bar Association of the District of Columbia, 2011-Present
    • Member, Board of Directors, 2014-2015
  • Head Coach, American University LL.M. International Arbitration Moot Court, 2013-2015
  • Educational Faculty, National Hispanic Institute, 2011-2015
  • Mentor/Volunteer, American Bar Association Judicial Internship Opportunity Program, 2011-2016


  • J.D., American University Washington College of Law, 2009
  • B.A., University of Illinois at Urbana-Champaign, 2005
  • Hon. Fernando Gaitan, Jr., U.S. District Court for the Western District of Missouri
  • District of Columbia
Admitted in the District of Columbia. Not admitted in Italy.
  • Spanish, Native