Based primarily in New York, Álvaro Mateo Alonso focuses his practice on US and European antitrust and competition law. From September 2019 to September 2020, Mr. Mateo Alonso was based in the Firm’s Washington DC office.

Mr. Mateo Alonso has worked in complex merger proceedings and in global cartel investigations before US and European authorities, has been involved in investigations, including a US congressional investigation, and has advised on legislative developments. He has also worked on foreign merger clearance proceedings in jurisdictions such as Mexico, Japan, Korea, China and Chile. In addition, Mr. Mateo Alonso has experience in appeal proceedings before the General Court of the European Union. His practice covers industry sectors including online platforms, financial services, biopharma, pharma, chemicals, telecommunications, energy, transportation, agriculture, insurance, and healthcare.

Mr. Mateo Alonso trained at the Antitrust Bureau of the New York State Office of the Attorney General, at the Directorate General for Competition of the European Commission and at the Competition Directorate of the Spanish Markets and Competition Commission. 

At the beginning of his career, Mr. Mateo Alonso was a finalist at the International Human Rights Contests for Attorneys both in 2012 (organized by the Second World War Memorial for Peace of Normandy-Caen) and in 2016 (organized by the Paris Bar).

Insights & News


  • Education

    • LLM, Columbia Law School, 2019

    • LLM, Université de Caen Basse-Normandie, 2015

    • LLM, Universidad Complutense de Madrid, 2012

    • Law Degree, Universidad Complutense de Madrid, 2011

  • Admissions

    • Brussels

    • Madrid

    • New York

  • Languages

    • English

    • Spanish

    • French



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