Oxera (Brussels)

Stéphane Dewulf

Oxera (Brussels)

Stéphane Dewulf joined Oxera in September 2020. He has expertise in competition law, with experience both as a consultant and as an enforcer. He was previously a case handler at the European Commission’s Directorate-General for Competition, where he worked for six years. His work for the Commission was shared equally between merger control and antitrust investigations, and he had a particular focus on the following sectors: digital, IT, media, telecoms and energy. Before joining the Commission, Stéphane Dewulf worked as an economist for eight years in two leading economics consultancies in the field of competition policy. He provided economic advice to companies in relation to mergers, horizontal and vertical agreements, and abuse of dominance—mostly in the context of investigations by the Commission and other competition authorities in Europe, but also in the context of private litigation. His experience in the private sector covers a wide range of sectors including digital, media, pharmaceuticals, telecoms, consumer electronics, air transport, basic industries, manufacturing, FMCG and banking. Stéphane Dewulf holds a Master in European Economics from the College of Europe in Bruges and a Master in Competition and Market Regulation from the Barcelona Graduate School of Economics.

Linked authors

Oxera (Rome)
Oxera (Paris)
Oxera (Oxford)
University of Antwerp
Oxera (Paris)


15887 Bulletin

Avantika Chowdhury, Antoine Comps, Stéphane Dewulf, Anastasia Shchepetova, Timo Klein The EU General Court delivers a message regarding application of as efficient competitor test and holds that the evidence and assumptions used as inputs to this test should be robust (Intel)


This article has been nominated for the 2023 Antitrust Writing Awards. Click here to learn more about the Antitrust Writing Awards. This article has originally been published as Oxera (2022), ’Intel and the AEC test: ‘Do. Or do not. There is no try.’’, Agenda, 24 February. After more than (...)

Christian Bongard, Lina Barauskaite, Niccolò Namari, Stéphane Dewulf The EU Commission unconditionally clears acquisition of one equipment manufacturer by another in the market for the supply of aero-derivative gas turbines (Siemens / Dresser-Rand)


Siemens / Dresser* In a nutshell The Commission was concerned that the acquisition of Dresser-Rand by Siemens would reduce the number of significant suppliers from 3 to 2 for rotating equipment in the oil and gas industry. The in-depth investigation showed that the parties’ activities in gas (...)

Henri Piffaut, Stéphane Dewulf The Belgian Competition Council fines three companies nearly € 1.5 M for price fixing, market sharing and output-limitation in the chemical industry and applies leniency (Bayer / Ferro / Lonza / Solutia Europe)


On 4 April 2008, the Belgian Competition Council found the three biggest producers of Butyl Benzyl Phthalate (BBP) - i.e. Bayer, Ferro and Solutia Europe - and a distributor (Lonza) guilty of fixing price, market-sharing, limiting output and exchanging strategic information. BBP is a chemical (...)

Henri Piffaut, Stéphane Dewulf The Brussels Court of appeal invalidates a decision by the Belgian Competition Council to lift the restrictions imposed on a cinema chain merger, and inter alia prohibition of exclusivity/priority clause (Kinepolis)


Introduction On the 23rd of August 2007, the Brussels Court of Appeal accepted the request of UGC, Utopolis and FCB to revoke a decision by the Belgian Competition Council concerning the cinema chain Kinepolis. This latter decision lifted the restrictions imposed on Kinepolis in 1997 when (...)

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