Dr. Rivas is a Partner of Xtrategy LLP and an Adjunct Professor of “Investment Treaty Arbitration, Public International Law, and Landmark Judgments of the ICJ.” His practice focuses on international investment and commercial arbitration and public international law. He has also taught Trade and Integration also at GULC, and is a former professor of Public International Law at the Universidad de los Andes in Colombia. He has authored over 20 publications on investment treaty arbitration and public international and international trade law, including as author and co-editor of Revolution in the International Rule of Law: Essays in Honor of Don Wallace (Juris, 2014) and Tratados Internacionales y el Arbitraje de Inversión: Experiencias de Colombia y del Derecho Comparado (Ibañez, 2019).

Professor Rivas is an arbitrator of domestic and international disputes under the rules of Arbitration of the Chamber of Commerce of Bogota, a Fellow of the Chartered Institute of Arbitrators, a member of the panel of Conciliators of ICSID, and a member of the panels of Arbitrators of the American Arbitration Association/International Center for Dispute Resolution, and Inter-American Commercial Arbitration.

He is a former managing director of Vannin Capital, where he advised clients on customized options to fund their international arbitration cases; and a former senior associate of Arnold & Porter where he represented sovereign States and private parties before the International Centre for Settlement of Investment Disputes (ICSID) and the International Chamber of Commerce. He provided counsel in investment and commercial arbitrations involving the energy sector, hydrocarbons, real estate ventures, environmentally sensitive projects, and infrastructure and highway concessions; and in matters involving the United Nations Convention on the Law of the Sea, the protection of underwater cultural heritage, and territorial and maritime disputes. He is former Foreign Investment Director of the Ministry of Trade of Colombia where he conducted a program to strengthen the State’s readiness in case of investor-State arbitration and headed the drafting and updating of the Colombian International Investment Agreement (IIA) Model. Based on this Model, he successfully concluded fifteen IIA negotiations with States from Latin America, North America, Europe and Asia which included bilateral investment treaties and investment chapters of free trade agreements (FTAs). Professor Rivas is also former Counsel of ICSID. He received his Doctorate in Law in Juridical Science –SJD– with Distinction after writing on rules of interpretation in public international law and international trade law, GATT XXIV, and rules of origin of regional trade agreements.