DGCCRF (Paris)

Guillaume Daieff

DGCCRF (Paris)
Deputy Director of Competition, Consumer and Legal Affairs

Guillaume Daieff has been Deputy Director of Competition Law, Consumer Law and Legal Affairs at the French General Directorate for Competition, Consumer Affairs and Fraud Control (DGCCRF) since April 2020. He previously served as Head of the Financial, Economic and Commercial Section (2018-2020), and as First Deputy Public Prosecutor (2017-2020) at the Nanterre Court of High Instance. Between 2008 and 2017, he was National Financial Investigating Judge. Guillaume Daieff graduated from the ENM in 1999. He is also a graduate from the Université Paris-Sorbonne, Sciences Po Paris and ESSEC Business School.

Linked authors

Ministère des Outre-mer
DGCCRF (Paris)
French General Inspectorate of Finance (Paris)
DGCCRF (Paris)
DGCCRF (Paris)


2628 Review

Laurence Idot, Guillaume Daieff, Isabelle de Silva, Linda Arcelin, Mathilde Boudou, Jean-Louis Fourgoux, Yann Utzschneider, Anouk Clamens, Christophe Lemaire DDADUE bill: Simple adaptation or reform of French competition law?


This set of articles is dedicated to the changes made to the French competition law by the DDADUE bill of December 3, 2020. Both the law on restrictive competition practices and the law on anti-competitive practices are affected by the necessary transposition of EU directives (directives (...)

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