Lionel Lesur

McDermott Will & Emery (Paris)
Lawyer (Partner)

Lionel Lesur is a partner in the law firm of McDermott Will & Emery and is based in the Firm’s Paris office. He focuses his practice on corporate law and competition law. Lionel advises domestic and international companies in a broad range of industries. His experience focuses on negotiations of private mergers and acquisitions, leverage buy-outs and commercial contracts. Lionel also has experience with both European and French competition law, in particular, merger control proceedings and antitrust proceedings. Lionel is admitted to practice in Paris and Rome. He commenced his career in Paris before moving to Rome where he practiced for one year with a leading Italian firm before returning to Paris. Lionel has co-authored several articles on European and French antitrust law including in the Concurrences review. Lionel is also the French correspondent of the Italian Observatory for Competition (Osservatorio Permanente sull’Applicazione delle Regole di Concorrenza) and trained twice in Vietnam for the benefit of the members of the newly created national competition authority. Lionel was also the contributor for France to The EC Competition Law Handbook from 2007 to 2011 (Jones; Van der Woude). Lionel has been a visiting professor of comparative law at HEC since 2011.

Linked authors

Herbert Smith Freehills (Paris)
Jones Day (Brussels)
Siemens (Brussels)
ENSAE Paris-Tech
Analysis Group (Paris)
McDermott Will & Emery (Paris)
McDermott Will & Emery (Washington)
ESSEC Business School (Cergy)


6144 Bulletin

Lionel Lesur, Jacques Buhart The French Competition Authority fines €25 million on a pharmaceutical laboratory for delaying entry into the market of the generic version of a drug and for hindering its development through disparagement campaigns (Janssen-Cilag)


THE FRENCH COMPETITION AUTHORITY FINES A PHARMACEUTICAL LABORATORY EUR 25 MILLION FOR ANTI-GENERIC PRACTICES* On 20 December 2017, the French Competition Authority (the FCA) imposed a EUR 25 million fine on a pharmaceutical laboratory, for delaying entry onto the market of the generic version (...)

Lionel Lesur, Jacques Buhart The French Competition Authority imposes a €302 m fine on three leading companies in the PVC and Linoleum floor coverings sector for price-fixing, sharing commercially sensitive information and signing a non-compete agreement on environmental performance advertising (Forbo / Gerflor / Tarkett / SFEC)


SIGNIFICANT FINE IMPOSED BY THE FRENCH COMPETITION AUTHORITY IN FLOOR COVERINGS CARTEL* On October 18, 2017, the French Competition Authority (the “FCA”) imposed a EUR 302 million fine on the three leading companies in the PVC and linoleum floor coverings sector; Forbo, Gerflor and Tarkett, as (...)

Louise Aberg, Lionel Lesur The French Competition Authority sanctions companies for implementing a transaction which has been notified to the FCA but has not yet received a clearance decision in the telecommunications industry (Alice & SFR / OTL)


FRENCH COMPETITION AUTHORITY IMPOSES ITS FIRST EVER FINE FOR GUN-JUMPING* For the first time ever, on 8 November 2016 the French Competition Authority (FCA) sanctioned companies for implementing a transaction that had been notified to the FCA but not yet received a clearance decision, (...)

Andrea L. Hamilton, Jacques Buhart, Lionel Lesur The EU Commission publishes a White Paper on the application of merger control rules to the acquisition of non-controlling minority shareholdings to provide a more effective EU merger control regime


COMMISSION PUBLISHES WHITE PAPER ON MINORITY SHAREHOLDINGS* On 9 July 2014, the EU Commission (Commission) published a White Paper (White Paper) entitled Towards more effective EU merger control. The White Paper sets out the Commission’s current thinking on the application of merger control (...)

Lionel Lesur, Louise Aberg, Philipp Werner The European Court of Justice rules that the EU Commission can bring follow-on actions for damages on behalf of the EU in cartel cases (Otis)


EU Commission Can Bring Follow-On Actions for Damages on Behalf of the European Union in Cartel Cases* On 6 November 2012, the Court of Justice of the European Union (CJEU) ruled that the European Commission was entitled to represent the European Union in an action for damages before national (...)

Lionel Lesur The EU Commission explains in its judgement that the ’priority principle’ requires them to review a deal’s impact on competition according to the date the deal was notified (Seagate / Samsung)


APPLICATION OF THE ’PRIORITY PRINCIPLE’ * The EU Commission was notified of the Seagate/Samsung transaction and the Western Digital/Hitachi transactions – both mergers involving hard drive disk businesses – within days of each other. In its decision on the Seagate/Samsung transaction (published on (...)

Lionel Lesur, Louise Aberg The French Competition Authority withdraws its authorisation of an undertaking’s purchase of rival commercial television company in the TV market and imposes a €30 m fine for failing to fulfill the 59 remedies imposed by the Authority (Canal Plus / TPS)


WITHDRAWAL OF CLEARANCE DECISION AND EUR 30 MILLION FINE AGAINST CANAL PLUS FOR UNFULFILLED MERGER CLEARANCE COMMITMENTS* The French Competition Authority has taken a hard stance by withdrawing its authorization of French broadcaster Canal Plus’ purchase of rival commercial television company (...)

Lionel Lesur, Sergio Sorinas The French Supreme Court rules that the damage caused to the economy by an anticompetitive practice cannot be presumed (Bouygues Télécoms, SFR, Orange)


Background This case is the latest episode of the saga of the «mobile telephony case«. In 2005 the French Competition Council imposed on the three leading French mobile operators (Orange France, SFR and Bouygues Télécom) a record fine of € 534 M for collusive practices consisting in (i) exchange of (...)

Lionel Lesur, Sergio Sorinas The Paris Court of Appeal annuls a decision by the French Competition Council fining 7 physicians’ unions for colluding to increase their fees (Union nationale des médecins spécialistes confédéés / Association Familles rurales)


In a ruling of 18 March 2009, the Paris Court of Appeal (the "Court") annulled a decision by the French Competition Council (the "Decision" and the "Council") to fine 7 physicians’ unions for an agreement among their members to increase fees charged to patients. These practices ran for varying (...)

2182 Review

Send a message