News 19 Dec. 2019
Curtis Wins in London for Federal Airports Authority of Nigeria
News 18 Apr. 2016
Curtis gains recognition in new Africa publication
News 26 Feb. 2020
Curtis Secures Comprehensive Victory for the Republic of Kazakhstan’s Committee of Roads
News 24 Jan. 2020
Curtis defeats $400 million investment treaty claim brought against India
News 26 Jun. 2020
Curtis wins Arbitration Team of the Year 2020 at Italy’s prestigious Legal Community Awards
Client Alert 16 Jun. 2020
Germany Insight: German Government Approves Comprehensive EUR 130 Billion Stimulus Package to Reverse Economic Damage from COVID-19 (Coronavirus) Pandemic
Article 02 Jul. 2020
Partner Antonio Prida and associate Irene Cuellar publish article on mediation in the National Autonomous University of Mexico’s legal magazine, "Opiniones técnicas sobre temas de relevancia nacional"
Event 24 Jun. 2020
Partner Gabriela Alvarez Avila Speaks on ISDS at ASIL 2020 Virtual Annual Meeting
News 24 Jun. 2020
Curtis defeats second treaty claim brought against Kuwait
Event 31 Jan. 2020
Partner Antonia Birt Speaks at 5th Annual GAR Live Abu Dhabi
News 22 Jun. 2020
New Corporate Partner Frank J. Marinaro Joins Curtis in New York
Event 09 Jun. 2020
International Associate Luis Carlos Ramírez Martínez speaks on ProColombia webinar about the Effects of COVID-19 on International Trade
Publications 09 Jun. 2020
Luis Carlos Ramírez Martínez publishes "COVID-19 terminaría impulsando el comercio internacional" in asuntos:legales
Paris Managing Partner
P +33 1 42 66 39 10
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)
News 20 Feb. 2020
18 Curtis Practice Areas and 22 Individuals Ranked in Chambers Global 2020
Publications 16 Jan. 2019
Post Brexit - Enforcement of Judicial Decisions
Legal 500 EMEA 2014
Legal 500 France
Chambers Global 2019
Chambers Global 2018
Chambers Global 2020 France International Arbitration