Patricia Mastropierro



Education and Clerkships

LL.M., Southern Methodist University Dedman School of Law, 2001

J.D., Universidad Catolica Argentina, Buenos Aires, 1996, with honors



Texas, 2017




Patricia Mastropierro is a member of the International Practice Group at Haynes and Boone. She has significant experience in international aviation matters. She has advised airlines in a broad range of international legal matters, including setting up and maintaining operations abroad, obtaining applicable permits, airport authorizations and slots in foreign jurisdictions, among others. For several years, she has represented one of the biggest U.S. airlines and its regional airlines in more than 35 jurisdictions worldwide. Patricia has worked for more than 15 years on their international projects, including in the areas of commercial transactions and regulatory, aviation and litigation matters.

Professional Recognition

  • Named a Latin America Rising Legal Star by Latinvex, 2015
  • Recognized by Latinvex as one of the top 100 Female Latin American lawyers, 2017.
  • Included in the Mexico and International listings of Latin Lawyer 250, Latinvex, for aviation, 2014
  • Selected for inclusion in Who's Who Legal: The International Who's Who of Aviation Lawyers, Law Business Research, Ltd, 2010 and 2011.

Professional and Community Activities

  • Buenos Aires, Argentina Bar Association


2018 Class of New Partners

Haynes and Boone Announces 2018 Class of New Partners

Haynes and Boone is proud to announce the promotion to partnership of nine lawyers from the firm’s Dallas, Mexico City and Richardson offices. The new partners are Troy Christensen, Erin England, Cory Feldman, Charlie Jones, Patricia Mastropierro, Timothy Newman, Michael Parsons, Blaine Statham and Clint Wilkins.

Selected Client Representations

  • Representation of numerous Argentine companies in corporate and commercial matters.
  • Representation of many foreign investors setting up their companies in Argentina.
  • Representation of a global supplier of coatings, glass and chemicals, in the merger of its Argentine companies.
  • Representation of a Chilean chemical company in its Argentine joint venture with its U.S. partner.
  • Representation of a large multinational information technology company in numerous licensing transactions abroad.
  • Representation of a large U.S. technology company in Argentine bankruptcy issues.
  • Representation of a U.S. airline in its purchase of an Argentine airline (including complete multi-jurisdictional due diligence effort) in a transaction valued at more than US$25 million.
  • Representation of a U.S. airline in a $300 million restructuring of its Argentine investment.
  • Representation of a U.S. public company in the acquisition and servicing of distressed loan portfolios in Argentina.



Haynes and Boone Advises American Airlines on Historic Service to Cuba

A team of Haynes and Boone, LLP lawyers advised American Airlines Group in connection with the April commencement of American Eagle flight service, operated by Republic Airlines, from Miami to Camaguey and Cienfuegos, Cuba.

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