Chambers Global 2022 - Dispute Resolution - Kazakhstan - Expertise Based Abroad in Kazakhstan
Geoffroy Lyonnet is based in Paris and regularly handles Kazakhstan-related international arbitration, particularly in the oil and gas sector. He is well placed to advise government entities.
Chambers Global 2021 Dispute Resolution - Kazakhstan
Geoffroy Lyonnet is based in Paris and regularly handles Kazakhstan-related international arbitration, particularly in the oil and gas sector. One source declares that "he is remarkable - I have never seen a cross-examination as successful as his."
Chambers Europe 2019 - Dispute Resolution: International Arbitration - France
Geoffroy Lyonnet is best known for his work on investor-state disputes. He also acts on ICC rules commercial arbitrations and co-ordinates subsequent enforcement actions with local counsel. Interviewees say that he is "thoughtful and knowledgeable."
Leaders League 2018-19 France - Best Law Firms
Known for his advocacy, Geoffroy Lyonnet serves as both lead counsel and arbitrator and was instrumental in the Kazakhstan Oil Field case.
Chambers Europe 2018 - Dispute Resolution: International Arbitration - France
Geoffroy Lyonnet is recognised in the market for his strong cross-examination skills. He is experienced handling investor-state arbitrations and commercial arbitrations, with notable activity in oil and gas sector disputes.
Chambers Europe 2017 - France: Dispute Resolution
Sources say: "He has shown outstanding profundity in the analytical work done."
Legal 500: France 2016
Geoffroy Lyonnet est également très expérimenté.
Chambers Global 2015 - France: Dispute Resolution
"really outstanding, effective and impressive." His practice focuses on commercial and investment arbitrations, and he is a favourite with clients: "He's personable, likeable and comes across as someone who talks good sense."
Legal 500 EMEA 2014 - Paris: International Arbitration
Geoffroy Lyonnet is ‘on top of all relevant details.’