Jean-Louis Dupont

• In 2000, South Africa, in the challenge against FIFA regarding the attribution of the World Cup 2006 to Germany, which ended with the FIFA decision to implement the continental rotation, starting with Africa in 2010.
• David Meca-Medina and Igor Majcen, in the matter which led to the Meca-Medina ruling which establishes the primacy of European law over all regulations and decisions of the sports federations affecting the economical activity of any person in the sports world.
• The G-14, conducting, among others, the “Charleroi case” which concluded in an agreement between FIFA and UEFA, whereby clubs receive compensation when players are provided for national teams and a co-decision power with regards to the financial and sport format of the UEFA Champions League and the European League.
• Yanina Wickmayer and Xavier Malisse, as well as FC Sion, in some matters that open the debate of clubs and sportspeople having the right to turn to ordinary jurisdiction instead of having the obligation to turn exclusively to the Court of Arbitration for Sport.
• Numerous clubs and sportspeople, including Real Madrid, FC Barcelona, PSG, FC Metz, Juventus, AC Milan, FC Porto, PSV Eindhoven, Liverpool, Olympique de Marseille, Olympique Lyonnais, Galatasaray, Fenerbahce, Standard de Liège, Gica Hagi, Philippe Mexes, Oguchi Onyewu, Sergi Conceicao, Adrian Mutu, Axel Witsel, Marouane Fellaini, Alen Halilovic, José Mourinho, Michel Preud’Homme, Eric Gerets, various professional cycling teams and riders, etc.
• Daniel Striani, player agent, and supporters associations in the complaint against the "break-even rule" as enforced by the UEFA Financial Fair Play regulation.
• Legal Adviser of the Spanish Professional Football League and the Portuguese Professional Football League against FIFA in the complaint against Third-Party Ownership.
• Aspire Academy.
• Miami FC and Kingston Stockade FC in the dispute regarding the implementation of the principle of promotion and relegation in the US and in Canada.
• Adrian Mutu in his recourse to the ECHR, which led this Court to decide, in its Mutu and Pechstein judgment, that CAS was to be considered as "forced arbitration" and that therefore all the fair process guarantees apply.
• Antonio Giraudo, ex-CEO of Juventus FC, in his recourse to the ECHR, in which Giraudo challenges the legality of the "Calciopoli" disciplinary proceedings under article 6 ECHR.
• The European Super League, a project launched in 2021 by 12 major European soccer clubs.