News 24 Jun. 2021
Curtis successfully defends foreign states' procedural privileges in the UK Supreme Court
News 23 Jun. 2021
Ibrahim Elsadig joins Curtis as Partner in Dubai
Client Alert 24 Feb. 2022
EU, UK, Japan and Australia Impose Sanctions on Russia
News 09 Aug. 2021
Curtis, Mallet-Prevost, Colt & Mosle enters into association with Chevalier Law in Singapore.
Client Alert 23 May. 2022
U.S. President Biden Issues Seventh Tranche of Economic Sanctions
News 06 May. 2022
Curtis Advises Terna Group on the Sale of its Latin America Power Transmission Assets to CDPQ
Event 26 Apr. 2022
Claudia Frutos-Peterson Speaks at CAI Costa Rica’s 13th Congress of International Arbitration
News 21 Apr. 2022
SCOTUS Upholds U.S. Colonialism under the U.S. Constitution
Event 23 May. 2022
Marco Blanco & Olga Beloded Taught 3-Day LLM Course on International Taxation, Hosted by the DIFC and University of Paris II - Assas
Partner Antonia Birt to Speak at Equal Representation in Arbitration Event Entitled "Diversity and Inclusion, Arbitral Institutions, and Users"
News 19 May. 2022
Eliot Lauer’s and Juan Perla’s Tenth Circuit Arguments Featured on Audio Arguendo Podcast
Client Alert 21 Apr. 2022
New Laws Targeting Assets of Russian Oligarchs: The U.S. Announces Task Force KleptoCapture and the Kleptocracy Asset Recovery Rewards Program
Client Alert 24 Jun. 2021
Update on Virtual Notarization (Executive Order 202.7) During the COVID-19 (Coronavirus) Pandemic (Updated: June 24, 2021) — U.S. Insight
Update on Virtual Witnessing (New York Executive Order 202.14) During The COVID-19 (Coronavirus) Pandemic (Updated: June 24, 2021) — U.S. Insight
Paris Managing Partner
P +33 1 42 68 72 00
F +33 1 42 66 39 62
Managing partner of the Paris office, Geoffroy Lyonnet is a leading international arbitration lawyer with extensive experience in handling high-stakes investor-state and international commercial arbitrations conducted, in particular, under the International Chamber of Commerce (ICC), International Centre for Settlement of Investment Disputes (ICSID), United Nations Commission on International Trade Law (UNCITRAL) and Stockholm Chamber of Commerce (SCC) rules.
Mr. Lyonnet’s arbitration activities have involved international disputes in a variety of fields, including mergers and acquisitions, oil and gas, concessions, agriculture projects, distribution and construction. His experience includes representing private sector companies and sovereign states or state-owned entities in international arbitrations. He has served as arbitrator, sole arbitrator and party-appointed arbitrator and as an expert witness in French and international arbitration law before U.S. courts.
Mr. Lyonnet also lectures on international arbitration and is Co-Chair of the ICC task force that publishes the ICC Guide to National Procedures for Recognition and Enforcement of Awards under the New York Convention.
Geoffroy Lyonnet has also developed significant expertise in domestic and international business law and transactions, including corporate contracts, particularly in the energy and telecommunications sectors, mergers and acquisitions, investment management and funds.
Mr. Lyonnet’s corporate experience includes M&A, investment management and funds and international contracts, including distribution agreements and contracts relating to the exploration, production sharing, shipment and commercialization of natural gas and telecommunication contracts with both private and state-owned entities.
Prior to joining the firm in 1988, he worked with Unilever.
Commercial Disputes - Arbitration
Mergers and Acquisitions
Energy (Oil & Gas)
Event 13 Apr. 2022
Affaires d’États: Practical Considerations When Defending States in International Arbitration
News 18 Mar. 2022
2022 Rankings Announced — Leaders League Recommends Curtis for Dispute Resolution and M&A
Chambers Global 2021 Dispute Resolution - Kazakhstan
Chambers Global 2020 France International Arbitration
Legal 500 France
Chambers Global 2019
Legal 500 EMEA 2014