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Nellie Wigfall's practice focuses on litigation, regulatory enforcement, and internal investigations. She has experience in the discovery, trial, and appellate phases of litigation. Her regulatory enforcement and investigations practice primarily relates to U.S. State Department and U.S. Commerce Department export controls for the aerospace industry, U.S. Treasury Department Office of Foreign Assets Control sanctions, and the Foreign Corrupt Practices Act.

Ms. Wigfall is fluent in Spanish. For clients who transact business in Latin America, she has conducted in-depth analysis of their operations and has researched related Spanish-language legislation, primarily for regulatory compliance and internal investigations.

She is a Certified E-Discovery Specialist (CEDS) who utilizes legal technology in her practice areas for efficient, cost-effective fact-finding. She has supervised attorneys in the document review phase of discovery, managed productions, and incorporated her findings in submissions to regulatory authorities. She has also held the Brainspace Analyst certification.

Her pro bono activities have included litigation on behalf of voting rights and projects related to conservation. Her Spanish-language pro bono activities have included litigation representing victims of labor trafficking and serving as a Spanish-language hotline volunteer to provide families information about the U.S. government’s Central American Minors program.


  • Pfizer in its $43 billion acquisition of Seagen Inc., a world-leader in antibody-drug conjugates (ADCs).
  • Multinational aircraft manufacturer in an audit related to  U.S. State Department export control regulations.
  • Multinational consumer products company in a Foreign Corrupt Practices Act investigation of its activities in Latin America.
  • U.S. companies in response to requests for information from the U.S. Treasury Department’s Office of Foreign Assets Control related to sanctions.
  • International company in a Lacey Act compliance review of its activities in South America. 



  • J.D., Duquesne University School of Law, 1998
  • M.A., History, Catholic University of America, 1994
  • B.A., Catholic University of America, 1993, magna cum laude, Phi Beta Kappa


  • District of Columbia
  • Maryland


  • Spanish