Matthieu Chirez, Jean-Philippe Arroyo and Matthieu Delignon were delighted to have contributed to the December 2025 issue of the UIA – Union Internationale des Avocats dedicated to sport and the law, entitled “Contrôle de la (dis)proportionnalité des sanctions sportives”.
Category: Studies & publications
JP Karsenty in the Décideurs 2025 Ranking “Competition Law & European Affairs”
We are pleased to share that our firm’s expertise in competition law has been once again acknowledged in the latest Décideurs ranking in the following areas:
- Distribution Law: Excellent
- Antitrust: Highly Recommended
- Foreign direct investment screening : Mapping
- Franchise Law: Highly Recommended
- Follow-on actions : Mapping
A big thank you to our clients and partners for their continued trust !
Article – Significant imbalance practice in international disputes – Lamy de la Concurrence – November 2023
Jean-Philippe Arroyo wrote an article on the significant imbalance practice in international disputes, which has just been published in the legal journal Lamy de la concurrence of November 2023.
In France, we have a very specific legal regime applicable to unfair trade practices in BtoB relationships. These rules are enforced by private entities (mainly the contracting party), but also by public authorities (mainly the Minister for the economy), which have strong powers (like requesting a fine and/or injunctions to remove clauses from a contract).
These peculiar rules raise legal discussions before the courts in case of international disputes involving foreign companies.
In such disputes, there are diverging solutions on the competent courts and the applicable law, which can vary depending on the plaintiff seeking to enforce the rules (either a private entity, or a public authority), whereas the terms of the contract, often governed by a law chosen by the parties, can be ultimately affected following such actions.
In an article that has just been published in a major French legal review, Jean-Philippe Arroyo presents this situation, and suggests a new approach that would appear more consistent, notably in light of international private law rules.
67th Annual Congress of UIA – 25-29 October 2023 in Rome
Clémence Colin and Thomas Ricard were speakers at the 67th Annual Congress of UIA, held between October 25th and 29th 2023 in Rome.
- Clémence Colin took part in the “Labor Law” commission on the topic of whistleblower protection in labor law, in the context of the European Union Whistleblowing Directive and the Sapin 2 and Waserman laws in France, alongside Christoph Scheubel, Nathalie Subilia, Luca Demurtas, Bénédicte Querenet-Hahn, and moderated by Ulrich Baumann.
- Thomas Ricard took part in the “food industry” commission on the theme of food labeling and safety, alongside Wei Song and Carlos Ramirez.
Thanks to all the participants for these instructive exchanges and to the UIA for organizing this Congress!




AIJA – Conference Breakfast in America – 14-16 June 2023- New York
Clémence Colin was a speaker during the Conference “Breakfast in America” organized by AIJA (International Association of Young Lawyers) which took place between June 14 and 16, 2023 in New York City, on the panel dedicated to “Religious Express in the Workplace: Legal Rights and Boundaries” alongside Nazanin Afshar, Astrid Caporali and Marco Tesoro and moderated by Pia Padfield.

Etiquettes : des règles spécifiques pour certains cépages – Réussir Vigne Magazine
Read the article written by Nathalie Tourrette and Matthieu Chirez entitled « Etiquettes : des règles spécifiques pour certains cépages »” in the November 2022 issue n°300 of Réussir Vigne magazine.
Nathalie and Matthieu are regular contributors to the magazine Réussir Vigne in which they host the column “La Minute Droit”:
- “L’usage du mot nature pour l’étiquetage d’un vin s’est-il clarifié ? ” Réussir Vigne n°298 of August-September 2022
- “Quelle attitude adopter lors d’une poursuite pour Fraude“ Réussir Vigne n°296 of June 2022.

Quelle attitude adopter lors d’une poursuite pour fraude – Réussir Vigne n°296 June 2022

Chapter of the Lamy Droit Economique co-written by Jean-Philippe ARROYO and Siu-Yan KU
Jean-Philippe ARROYO and Siu-Yan KU are the co-authors of one of the chapters of the “Lamy Droit Economique” (the reference book in distribution law in France) on the legal actions based on the “restrictive practices of competition” untitled “La mise en oeuvre par la victime des pratiques restrictives de concurrence”
Publication of the book “The Interplay between Competition Law and Intellectual Property”
Martine KARSENTY-RICARD, with the collaboration of Maïa MERLI, has written an article published in a book published by WOLTERS KLUWER, under the leadership of Gabriella MUSCOLO, Commissioner at the Italian Competition Authority and former judge at the specialized Court for Intellectual Property and Competition Law in Rome, and Marina TAVASSI, President of the Court of Appeal in Milan.
The article has for title : “ Does the Application of the Exhaustion of Rights Doctrine in French Law Ensure a Balanced and Effective Compromise Between the Free Movement of Goods and the Protection of Intellectual Property Rights ?”.
The book entitled “ The Interplay between Competition Law and Intellectual Property ” is available since few days written by a range of authors coming from various countries.
Here-enclosed the “flyer” allowing to order the book.