Mateo advises clients on the legal aspects of antitrust, regulatory and international trade issues. He specializes in compliance procedures for international and Mexican companies, as well as trade and industry associations, and represents clients in enforcement cases before the Mexican competition authority and other regulatory agencies.

He was General Counsel of the Federal Competition Commission between 2008 and 2013. Between 1998 and 2008, he acted as Counsellor and later Minister of Mexico’s Mission to the WTO. He has been a panelist in four commercial disputes at the WTO and has acted as facilitator in the Airbus-Boeing case. He is a member of the list of arbiters of the World Intellectual Property Organization and of various free trade agreements.

He holds a degree in law from the Instituto Technológico Autónomo de México and a master’s degree in international relations from the Geneva School of Diplomacy and International Relations.