Ofilio J. Mayorga

Representative Experience

Litigation Before the International Court of Justice

• Bahrain, Egypt, Saudi Arabia, UAE v. Qatar (Appeal under the Chicago Convention): Represented Qatar in an ICJ litigation concerning international aviation law.
• Bahrain, Egypt, UAE v. Qatar (Appeal under IASTA): Represented Qatar in an ICJ litigation concerning international aviation law.
• Application of the International Convention on the Elimination of All Forms of Racial Discrimination (Qatar v. UAE). Represented the State of Qatar in this proceeding before the International Court of Justice arising from breaches of the ICERD by the UAE.
• Case Concerning Construction of a Road in Costa Rica along the San Juan River (Nicaragua v. Costa Rica). Represented Nicaragua in a dispute against Costa Rica before the ICJ regarding environmental and other damage suffered by Nicaragua as a result of Costa Rica’s construction of a road along the southern bank of the San Juan River and other irresponsible land use. 
• Case Concerning Certain Activities Carried Out by Nicaragua in the Border Area (Costa Rica v. Nicaragua). Represented Nicaragua in a dispute bought before the ICJ by Costa Rica regarding issues of territorial sovereignty and alleged breaches of environmental law in relation to Nicaragua’s environmental permitting and execution of a project to dredge the lower stretches of the San Juan River to ensure its navigability by small vessels.

Investor-State Treaty Arbitration Cases

• Bacilio Amorrortu v. Republic of Peru. Represents the Republic of Peru in an UNCITRAL arbitration initiated by a former Peruvian citizen and current US national for alleged violations of the Trade Promotion Agreement between Peru and the United States for alleged irregularities in the bidding process in connection with the operation of oil blocks off the Peruvian coast.
• Louis Dreyfus Armateurs SAS v. Republic of India. Counsel to India in a UNCITRAL Arbitration under the France-India bilateral investment treaty arising from a contract concerning the supply and operation of cargo handling equipment.
• Italba Corporation v. Oriental Republic of Uruguay. Counsel to Uruguay in an ICSID arbitration under the US - Uruguay bilateral investment treaty concerning the regulation of claimant’s telecommunications permit.
• MAESSA (Consorcio GLP) – Mantenimientos, Ayuda a la Explotación y Servicios S.A. Sociedad Española de Montajes Industriales S.A. v. Republic of Ecuador. Represents the Republic of Ecuador in an arbitration under the UNCITRAL rules.
• Sacyr S.A. v. The Republic of Panama. Represents the Republic of Panama in a treaty arbitration initiated by Sacyr S.A., a Spanish entity, under the arbitration rules of the United Nations Commission on International Trade Law (UNCITRAL), relating to the Panama Canal expansion.
• Rusoro Mining Limited v. The Bolivarian Republic of Venezuela. Represented Venezuela in a US$3.03 Billion claim brought by a Canadian gold mining company in an ICSID Additional Facility arbitration concerning the nationalization of the company's assets.
• Merck Sharp & Dohme (I.A.) v. The Republic of Ecuador. Represented the Republic of Ecuador in an UNCITRAL arbitration under the Ecuador - U.S. bilateral investment treaty arising from the alleged treatment of a foreign investor by the Ecuadorean judiciary.
• Murphy Exploration & Production Company-International v. The Republic of Ecuador. Represented the Republic of Ecuador in an UNCITRAL arbitration under the Ecuador – U.S. bilateral investment treaty arising from changes in domestic legislation pertaining to the exploitation of oil resources in Ecuador.
• Valores Mundiales, S.L. and Consorcio Andino, S.L. v. Bolivarian Republic of Venezuela, ICSID Case No. ARB/13/11. Represented Venezuela in an ICSID arbitration concerning regulations in the food production sector.

International Commercial Arbitration

• Metro de Lima Línea 2 S.A. v. Republic of Peru (ICSID Case No. ARB/17/3). Represented Peru in an ICSID arbitration arising out of a concession contract for the construction of line 2 of Metro de Lima.
• Represents a Central American State in ad hoc construction arbitration under UNCITRAL Rules related to the construction of a 40km highway. 
• Represents a Nicaraguan company in  ICC arbitration proceedings against a Colombian company related to corporate matters in the energy sector.
• Represents a Nicaraguan agricultural company in ICC arbitration proceedings against Nicaraguan, Panamanian and Colombian companies related to the mismanagement of cane sugar plantations.

International Advisory Matters

• Advised a Latin American nation on the renegotiation of its bilateral investment treaties.
• Advised an International Humanitarian Organization on the protection of hospitals in armed conflicts.

Professional Experience

• Guest Lecturer, Harvard Humanitarian Initiative (2012- 2016) 
• Interned in the United Nations Office of Legal Affairs (2008)
• Teaching Fellow in International Law, Tufts University Political Science Department (2008-2009)
• Lecturer in International Arbitration, Universidad Americana (2010-2011)