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 almost twenty years’ experience representing international companies and individuals in commercial and investment treaty arbitrations brought under the ICC, LCIA, AAA/ICDR, SCC, 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.

Full Bio

Credentials

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

Executive Committee, Foundation for International Arbitration Advocacy (FIAA)

Member, Arbitrator Nominations Committee, USCIB Arbitration Committee

Member, ICC Task Force on Maximizing the Probative Value of Witness Evidence

English

French

Ranked for International Arbitration every year since 2010


Legal 500

“ ‘Outstanding’ . . . ranks among the ‘few civil and common law lawyers able to cross-examine witnesses and experts’”


Legal 500 EMEA

“Excellent drafting and pleading skills”


Legal 500 EMEA

“[V]ery good at understanding technical details and at working with experts to come up with convincing arguments”


Legal 500 EMEA

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Recognition

Ranked for International Arbitration every year since 2010


Legal 500

“ ‘Outstanding’ . . . ranks among the ‘few civil and common law lawyers able to cross-examine witnesses and experts’”


Legal 500 EMEA

“Excellent drafting and pleading skills”


Legal 500 EMEA

“[V]ery good at understanding technical details and at working with experts to come up with convincing arguments”


Legal 500 EMEA

Matters

Construction/Energy

Represented a multinational EPC contractor in an UNCITRAL arbitration arising out of the commissioning of a power plant in Eastern Europe and the related termination of an EPC Contract, with claims valued in excess of 200 million euro

Defended a UK-based heavy equipment supplier in an ICC mediation and arbitration arising out of alleged defects in electrical equipment installed in a fleet of modular power plants

Represented a U.S.-based contractor in relation to arbitration claims arising out of the design and installation of undersea pipelines between oil platforms in the Gulf of Mexico

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Matters

Construction/Energy

Represented a multinational EPC contractor in an UNCITRAL arbitration arising out of the commissioning of a power plant in Eastern Europe and the related termination of an EPC Contract, with claims valued in excess of 200 million euro

Defended a UK-based heavy equipment supplier in an ICC mediation and arbitration arising out of alleged defects in electrical equipment installed in a fleet of modular power plants

Represented a U.S.-based contractor in relation to arbitration claims arising out of the design and installation of undersea pipelines between oil platforms in the Gulf of Mexico

Assisted a multinational contractor in preparing more than 100 million euro in contractual claims arising out of the construction of a third-generation nuclear reactor in Western Europe

Represented a multinational EPC contractor in disputes with a European power producer over the design and commissioning of power plants in France and the Netherlands

Defended a Eurasian state petroleum company in an ICC arbitration arising out of the design and installation of an underground natural gas storage facility

Defended to a multinational EPC contractor in an ICC arbitration with a subcontractor over the construction of a power plant in Mexico

Represented a UK-based industrial company in an AAA arbitration arising out of the installation of aluminum recycling equipment in a U.S. recycling facility

Represented a multinational EPC contractor in an ICC arbitration over the construction of a power plant in Argentina

Defended a multinational energy supplier in an ICC arbitration over equipment installed in its Latin American power plants

Investment

Represented Ukrainian investors in five arbitrations against the Russian Federation under the Russia-Ukraine BIT arising out of measures carried out by the Russian Federation in connection with its annexation of Crimea

Represented Rosinvestco UK Ltd., a UK investment fund, in an arbitration against the Russian Federation under the UK-Russia BIT arising out of Russia’s expropriation of Yukos assets

Defended a Eurasian state agency in an ICC arbitration arising out of the privatization of the electrical power sector

Mergers and Acquisitions

Represented a French-based multinational in an ICC arbitration arising out of the sale and valuation of an industrial business

Licensing, Agency, and Distributorship

Represented a European pharmaceutical company in an ICC arbitration over licensing rights for a Brazilian trademark and pharmaceutical product

Defended a European pharmaceutical company in an ICC arbitration arising out of the termination of an agency agreement for the promotion of pharmaceutical products in North Africa

Defense/Information Technology

Defended a U.S. defense contractor in an ICC arbitration against a European defense contractor arising out of alleged defects in equipment furnished for installation in missiles

Represented a French-based consulting company in an ICC arbitration against an Indian IT company for breach of contract

Compliance

Defended an international energy services supply contractor in an LCIA arbitration arising out of the non-payment of consultant commissions due to compliance concerns

Matters

Construction/Energy

Represented a multinational EPC contractor in an UNCITRAL arbitration arising out of the commissioning of a power plant in Eastern Europe and the related termination of an EPC Contract, with claims valued in excess of 200 million euro

Defended a UK-based heavy equipment supplier in an ICC mediation and arbitration arising out of alleged defects in electrical equipment installed in a fleet of modular power plants

Represented a U.S.-based contractor in relation to arbitration claims arising out of the design and installation of undersea pipelines between oil platforms in the Gulf of Mexico

See more
Icon close

Close

Matters

Construction/Energy

Represented a multinational EPC contractor in an UNCITRAL arbitration arising out of the commissioning of a power plant in Eastern Europe and the related termination of an EPC Contract, with claims valued in excess of 200 million euro

Defended a UK-based heavy equipment supplier in an ICC mediation and arbitration arising out of alleged defects in electrical equipment installed in a fleet of modular power plants

Represented a U.S.-based contractor in relation to arbitration claims arising out of the design and installation of undersea pipelines between oil platforms in the Gulf of Mexico

Assisted a multinational contractor in preparing more than 100 million euro in contractual claims arising out of the construction of a third-generation nuclear reactor in Western Europe

Represented a multinational EPC contractor in disputes with a European power producer over the design and commissioning of power plants in France and the Netherlands

Defended a Eurasian state petroleum company in an ICC arbitration arising out of the design and installation of an underground natural gas storage facility

Defended to a multinational EPC contractor in an ICC arbitration with a subcontractor over the construction of a power plant in Mexico

Represented a UK-based industrial company in an AAA arbitration arising out of the installation of aluminum recycling equipment in a U.S. recycling facility

Represented a multinational EPC contractor in an ICC arbitration over the construction of a power plant in Argentina

Defended a multinational energy supplier in an ICC arbitration over equipment installed in its Latin American power plants

Investment

Represented Ukrainian investors in five arbitrations against the Russian Federation under the Russia-Ukraine BIT arising out of measures carried out by the Russian Federation in connection with its annexation of Crimea

Represented Rosinvestco UK Ltd., a UK investment fund, in an arbitration against the Russian Federation under the UK-Russia BIT arising out of Russia’s expropriation of Yukos assets

Defended a Eurasian state agency in an ICC arbitration arising out of the privatization of the electrical power sector

Mergers and Acquisitions

Represented a French-based multinational in an ICC arbitration arising out of the sale and valuation of an industrial business

Licensing, Agency, and Distributorship

Represented a European pharmaceutical company in an ICC arbitration over licensing rights for a Brazilian trademark and pharmaceutical product

Defended a European pharmaceutical company in an ICC arbitration arising out of the termination of an agency agreement for the promotion of pharmaceutical products in North Africa

Defense/Information Technology

Defended a U.S. defense contractor in an ICC arbitration against a European defense contractor arising out of alleged defects in equipment furnished for installation in missiles

Represented a French-based consulting company in an ICC arbitration against an Indian IT company for breach of contract

Compliance

Defended an international energy services supply contractor in an LCIA arbitration arising out of the non-payment of consultant commissions due to compliance concerns

Credentials

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

Executive Committee, Foundation for International Arbitration Advocacy (FIAA)

Member, Arbitrator Nominations Committee, USCIB Arbitration Committee

Member, ICC Task Force on Maximizing the Probative Value of Witness Evidence

English

French

Ranked for International Arbitration every year since 2010


Legal 500

“ ‘Outstanding’ . . . ranks among the ‘few civil and common law lawyers able to cross-examine witnesses and experts’”


Legal 500 EMEA

“Excellent drafting and pleading skills”


Legal 500 EMEA

“[V]ery good at understanding technical details and at working with experts to come up with convincing arguments”


Legal 500 EMEA

Icon close

Close

Recognition

Ranked for International Arbitration every year since 2010


Legal 500

“ ‘Outstanding’ . . . ranks among the ‘few civil and common law lawyers able to cross-examine witnesses and experts’”


Legal 500 EMEA

“Excellent drafting and pleading skills”


Legal 500 EMEA

“[V]ery good at understanding technical details and at working with experts to come up with convincing arguments”


Legal 500 EMEA