Patrick Thieffry

Thieffry & Associés (Paris)

A partner and a co-founder of Thieffry & Associes, Patrick Thieffry is a member of the Paris and New York Bars. A large part of his activities consist in advising the firm’s clients and litigating in environmental law. He also teaches at the Sorbonne School of Law and authors one of the major treatises in this ever-changing area (Droit de l’environnement de l’Union européenne, Bruylant, 2nd ed., 2011). His special knowledge of the European institutions was acquired in assisting businesses and administrations for more than 30 years in their relationships with the European Commission, especially in competition law and state aids. He has a wide experience of negotiating international transactions, especially with the United States, and of the management of major construction disputes in litigation and in arbitration where he acts as counsel and arbitrator.


540 Review

Adrien de Hauteclocque, Dorte Fouquet, François Lévêque, Jean-Michel Glachant, Leigh Hancher, Marcelo Saguan, Patrick Thieffry, Sébastien Douguet, Vincent Rious Nouvelles interactions et tensions entre la politique énergétique européenne et l’approche de la Commission en matière d’aides d’État


The growing number of challenges on energy policy that the European Union faces call for a review and an update of the current mechanisms implemented for market integration and energetic transition. A new paradigm regarding the utilisation of State aid by EU member States to serve national and (...)



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