Recognized in Ones to Watch since 2026 
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.
