Luis specialises in public international law, international arbitration and international trade. He advises and acts for governments, international organizations and corporations in international law matters concerning, for example, treaty negotiations, the law of treaties, State responsibility, foreign investment and investment arbitration. Luis has acted as counsel in arbitrations under the UNCITRAL, ICSID and its Additional Facility Rules.
Before joining Matrix, Luis worked as a lawyer in the Office of the General Counsel for International Trade Negotiations at Mexico's Secretariat of Economy. He provided legal advice on the negotiation of international treaties, including free trade agreements and bilateral investment treaties and appeared as counsel and lead counsel for Mexico in investment treaty arbitrations under the NAFTA and BITs. In an arbitral award, the Mexican defence team was described as "a well integrated, highly competent, coordinated and seamlessly functioning government defence team".
Luis is an external consultant to the United Nations Conference on Trade and Development (UNCTAD) on investment treaty matters. He also has provided technical assistance to numerous Latin American governments on investment arbitration and revisions to their Model BITs. He has been invited as a lecturer at the World Trade Institute of the University of Bern. Luis is a regular speaker at conferences on international dispute settlement, including investment arbitration.
Luis worked as an intern at the International Trade Law Branch of the United Nations Office of Legal Affairs in Vienna (UNCITRAL Secretariat). He is Member of the London Court of International Arbitration (LCIA), and a Member of the Investment Treaty Forum of the British Institute for International and Comparative Law.