Ari D MacKinnon

Practice Areas

Ari D. MacKinnon’s practice focuses on international arbitration in Latin America, with a particular emphasis on matters relating to the oil & gas, mining and infrastructure sectors, as well as ESG- and corruption-related issues.

Ari has successfully represented a number of major Latin American oil and gas, energy, infrastructure, and pulp and paper companies, as well as state-owned companies and sovereigns clients in disputes in the region. He speaks regularly in Latin America on topics related to arbitration and crisis management. Ari has experience conducting arbitrations in both English and Spanish.

Career

Ari joined the firm in 2009 and became a partner in 2015. J.D., New York University School of Law (2006); M.A., Middlebury College (2006); B.A., Grinnell College (2002).

Professional Memberships

Member, New York Bar.

Member, Program Committee, New York International Arbitration Center.

Member, Chartered Institute of Arbitrators

Included on Arbitrator Roster, Arbitration Centre of the Lima Chamber of Commerce

Member, New York City Bar Association Council on International Affairs

Member, International Arbitration Club of New York

Member, Association of International Petroleum Negotiators

Publications

U.S. Supreme Court Authorizes Foreign Plaintiffs To Use Domestic RICO Statute In Aid Of Enforcement Of Arbitral Awards In The United States

Cleary Gottlieb Steen & Hamilton LLP, July 3rd 2023

An alert memo by Ari MacKinnon, Christopher Moore, Paul Leist, Katie Gonzalez, and Stanislaw Krawiecki titled, “U.S. Supreme Court Authorizes Foreign Plaintiffs To Use Domestic RICO Statute In Aid Of Enforcement Of Arbitral Awards In The United States”.

U.S. Supreme Court Rules That an Appeal of an Order Denying a Motion to Compel Arbitration Automatically Stays District Court Proceedings

Cleary Gottlieb Steen & Hamilton LLP, June 29th, 2023

An alert memo by Ari MacKinnon, Jeffrey Rosenthal, Carmine Boccuzzi, Nowell Bamberger, Boaz Morag, Samuel Levander, Katie Gonzalez, Chihiro Isozaki, and Rathna Ramamurthi titled, “U.S. Supreme Court Rules That An Appeal Of An Order Denying A Motion To Compel Arbitration Automatically Stays District Court Proceedings”.

Investment Treaty Arbitration

Corporate Disputes Magazine, June 8th, 2023

Ari MacKinnon co-authored the chapter, “Investment Treaty Arbitration”, which was published in the Jul-Sep 2023 issue of Corporate Disputes Magazine.

Commercial Arbitration: Brazil

Global Arbitration Review, March 28th, 2023

Ari MacKinnon, Pedro Martini, Katie Gonzalez and Gustavo Vaughn wrote an article titled "Commercial Arbitration: Brazil", which was published by the Global Arbitration Review.

Strategies for Effective Brief Writing in International Arbitration

Arbanza Investment Arbitration Guide, March 16th, 2023

Ari MacKinnon and Elisa Zavala co-authored the chapter, “Strategies for Effective Brief Writing in International Arbitration,” which appears in the inaugural Arbanza Investment Arbitration Guide.

Five International Arbitration Trends And Topics For 2023

Cleary Gottlieb Steen & Hamilton LLP, January 30th, 2023

An alert memo by Ari MacKinnon, Jeffrey Rosenthal, Carmine Boccuzzi, Nowell Bamberger, Jonathan Blackman, Boaz Morag, Katie Gonzalez, Elisa Zavala, Roberta Mayerle, Delany Sisiruca, Martin Vainstein, Gustavo Vaughn, Christopher Moore, Paul Kleist, Jean-Yves Garaud, Laurie Achtouk-Spivak, Ferdinado Emanuele, Carlo Santoro, Paolo Bertoli, Anna Chiara Amato, Alberto Favro, Rüdiger Harms, and Polina Lehman titled, “Five International Arbitration Trends And Topics For 2023”.

ESG-Related Disputes in Latin America: The Evolution of the Litigation and Arbitration Landscape

Latin Lawyer, December 16, 2022

Ari MacKinnon, Katie Gonzalez, and Gustavo Vaughn wrote a chapter titled, “ESG-Related Disputes in Latin America: The Evolution of the Litigation and Arbitration Landscape,” in The Guide to Environmental, Social, and Corporate Governance, which was published by Latin Lawyer.

Amended ICSID Arbitration Rules Enter Into Force

Association of Corporate Counsel, September 22, 2022

An alert memo by Christopher Moore, Ari MacKinnon, Ferdinando Emanuele, Laurie Achtouk-Spivak, Sarah Schröder, Robert Garden, and Alberto Favro titled, “Amended ICSID Arbitration Rules Enter Into Force,” was republished by Association of Corporate Counsel.

Arbitration of Corruption Issues in Latin American Disputes

Latin Lawyer, September 15, 2022

Ari MacKinnon, Katie Gonzalez, Elisa Zavala, and Roberta Mayerle wrote an article titled, “Arbitration of Corruption Issues in Latin American Disputes,” which was published by Latin Lawyer.

Investment Treaty Arbitration: Ecuador

Global Arbitration Review, August 1st, 2022

Ari MacKinnon, Katie Gonzalez and Elisa Zavala wrote an article titled “Investment Treaty Arbitration: Ecuador”, which was published by the Global Arbitration Review.

2nd Circ. Ruling Offers Clarity for Annulled Arbitral Awards

Law360, July 20, 2022

Ari MacKinnon, Katie Gonzalez, and Maria Manghi wrote an article titled, “2nd Circ. Ruling Offers Clarity for Annulled Arbitral Awards,” which was published by Law360.