People
Marc-Olivier Langlois is a partner in our Paris office. He regularly represents the world’s largest companies in complex international arbitrations arising out of infrastructure and energy projects, international investments, mergers & acquisitions, pharmaceutical licensing and distribution agreements, defense and technology disputes, and compliance issues.
Legal 500 has described Marc-Olivier as “outstanding,” noting his “excellent drafting and pleading skills” and ranking him “among the ‘few civil and common law lawyers able to cross-examine witnesses and experts’.”
Marc-Olivier has twenty years’ experience representing international companies and individuals in commercial and investment treaty arbitrations brought under the ICC, LCIA, AAA/ICDR, SCC, ICSID, and UNCITRAL Rules.
Marc-Olivier specializes in complex disputes arising out of international energy and infrastructure projects. He eschews a one-size-fits-all approach to dispute resolution, preferring to work closely with clients’ internal teams and outside experts to develop tailor-made strategies for efficiently resolving specific disputes. Clients value his ability to simplify complicated technical issues and craft winning legal arguments that take into account their commercial priorities and risks. Marc-Olivier regularly acts for clients in the electrical power generation, oil and gas, nuclear, and renewables industries.
Marc-Olivier also acts in disputes arising out of international investments, mergers & acquisitions, pharmaceutical licensing and distribution agreements, defense and technology disputes, and compliance issues. Among other things, he was part of a team of attorneys that obtained the first international awards finding the Russian Federation responsible for expropriating assets belonging to Yukos Oil Company and to Ukrainian investors following the Russian Federation’s takeover of Crimea.
A U.S.-trained lawyer and member of the Bars of the District of Columbia, Virginia, and Paris, Marc-Olivier practiced international arbitration for many years at another international law firm in Paris, where he was the co-head of its international construction disputes practice and the managing partner of its Paris office.
Marc-Olivier was raised and educated in the United States and France. He speaks English and French fluently.
J.D., William & Mary Law School
B.A., University of Virginia
Certificat d'Etudes Politiques, Institut d'Etudes Politiques de Paris
District of Columbia
Paris
Virginia
Law Clerk, the Honorable James H. Michael, Jr., Senior U.S. District Judge, U.S. District Court for the Western District of Virginia
Former Member, Arbitrator Nominations Committee, USCIB Arbitration Committee
Vice Chair, Executive Committee, Foundation for International Arbitration Advocacy (FIAA)
English
French
August 1, 2024
The Leaders League Ranks King & Spalding Practices Among the Leaders in France
May 9, 2024
Marc-Olivier Langlois is elected as vice-chair for the Foundation for International Arbitration Advocacy
March 27, 2024
Legal 500 EMEA 2024 Ranks King & Spalding among the Top Firms in Europe, the Middle East and Africa
Construction
Representing a Spanish infrastructure contractor in an ICSID arbitration against Kuwait seeking more than USD 300 million in compensation for delays and disruption occurring during the construction of an elevated roadway in Kuwait City
Assisting an Asian EPC contractor in preparing more than USD 270 million worth of contractual claims arising out of the construction of a power plant in Algeria
Represented a multinational supplier of turbines in an AFSA arbitration with a South African EPC contractor arising out of a power plant owner’s exercise of its step-in rights in respect of the subcontract between the supplier and the EPC contractor, with claims valued at USD 20 million
See more
April 21, 2023
Enforcement of an Arbitral Award in the Face of Corruption Allegations
August 1, 2024
The Leaders League Ranks King & Spalding Practices Among the Leaders in France
May 9, 2024
Marc-Olivier Langlois is elected as vice-chair for the Foundation for International Arbitration Advocacy
March 27, 2024
Legal 500 EMEA 2024 Ranks King & Spalding among the Top Firms in Europe, the Middle East and Africa
Construction
Representing a Spanish infrastructure contractor in an ICSID arbitration against Kuwait seeking more than USD 300 million in compensation for delays and disruption occurring during the construction of an elevated roadway in Kuwait City
Assisting an Asian EPC contractor in preparing more than USD 270 million worth of contractual claims arising out of the construction of a power plant in Algeria
Represented a multinational supplier of turbines in an AFSA arbitration with a South African EPC contractor arising out of a power plant owner’s exercise of its step-in rights in respect of the subcontract between the supplier and the EPC contractor, with claims valued at USD 20 million
See more
April 21, 2023
Enforcement of an Arbitral Award in the Face of Corruption Allegations
August 1, 2024
The Leaders League Ranks King & Spalding Practices Among the Leaders in France
May 9, 2024
Marc-Olivier Langlois is elected as vice-chair for the Foundation for International Arbitration Advocacy
March 27, 2024
Legal 500 EMEA 2024 Ranks King & Spalding among the Top Firms in Europe, the Middle East and Africa
J.D., William & Mary Law School
B.A., University of Virginia
Certificat d'Etudes Politiques, Institut d'Etudes Politiques de Paris
District of Columbia
Paris
Virginia
Law Clerk, the Honorable James H. Michael, Jr., Senior U.S. District Judge, U.S. District Court for the Western District of Virginia
Former Member, Arbitrator Nominations Committee, USCIB Arbitration Committee
Vice Chair, Executive Committee, Foundation for International Arbitration Advocacy (FIAA)
English
French