White & Case (Brussels)

Jacquelyn MacLennan

White & Case (Brussels)
Lawyer (Partner)

Jacquelyn MacLennan’s practice focuses on EU and UK competition law. She regularly appears before the EU Commission and UK Competition and Markets Authority, and litigates before the EU and UK courts. She has particular expertise in developing strategy for and running defences in major international cartel investigations, and related damages actions in different jurisdictions. Most recently she has been involved in the multi-jurisdictional LIBOR, LCD, CRT and GIS investigations and litigations. She also handles investigations and advises on complex distribution problems and licensing arrangements, abuse of dominance cases, mergers and joint ventures. Clients describe Jacquelyn as "excellent – an industry leader in antitrust matters" and "commercially-minded and solution-oriented." (Chambers Europe, 2016). She is a visiting fellow at Edinburgh University’s Europa Institute, was recently awarded “Best Lawyer in Competition & Antitrust” by Euromoney Women in Business Awards, and is included in Global Competition Review’s 100 Elite Women in Antitrust. She formerly headed White & Case’s European Competition Practice and is now head of the firm’s Global Pro Bono Practice.


Linked authors

White & Case (Brussels)
White & Case (Brussels)
White & Case (Brussels)
Compass Lexecon (Paris)
King’s College (London)
United Kingdom’s Competition Authority - CMA (London)
DG COMP (Brussels)
Barclays (London)


Jacquelyn MacLennan (White & Case)
Jacquelyn MacLennan 23 February 2018 London


5235 Bulletin

Jacquelyn MacLennan, Marc Israel The EU Commission fines four consumer electronics groups for restricting their online retailers’ ability to set their own retail prices for widely-used electronics products (Asus / Denon & Marantz / Philips / Pioneer)


The Commission Decisions In February 2017, the Commission initiated proceedings against Asus, Denon & Marantz, Philips and Pioneer following information obtained during the e-commerce sector inquiry. The Commission’s report had identified resale price maintenance as an area of concern, and (...)

Aqeel Kadri, Jacquelyn MacLennan, Marc Israel The UK Competition Authority issues updated guidance on the appropriate amount of penalties to be imposed for infringements of competition law


On 18 April 2018, the Competition and Markets Authority issued updated guidance on the appropriate amount of penalties to be imposed for infringements of competition law in the UK. This replaces the previous guidance issued by the Office of Fair Trading (which the CMA replaced in 2014) and (...)

Assimakis Komninos, Jacquelyn MacLennan, James Killick, Jan Jeram, Jérémie Jourdan, Strati Sakellariou-Witt The EU Court of Justice endorses an effects-based assessment of rebates (Intel)


This article has been nominated for the 2018 Antitrust Writing Awards. Click here to learn more about the Antitrust Writing Awards. On 6 September 2017, the Court of Justice of the European Union ("CJEU" or "Court") essentially held in Intel that the European Commission ("Commission") cannot (...)

Axel P. Schulz, Ian Forrester, Jacquelyn MacLennan The Advocate General Wathelet proposes to the EU Court of Justice to annul a judgement of the EU General Court in order to force it to exercice its full jurisdiction to review fines imposed by the Commission (Telefónica)


The level of fines imposed by the European Commission in competition cases has attracted controversy for more than ten years. The often deferential approach of the European courts to hearing appeals has also been criticised, but in many cases the courts have largely left untouched the (...)

Assimakis Komninos, Ian Forrester, Jacquelyn MacLennan, Kai Struckmann, Mark D. Powell, Pontus Lindfelt The European Commission adopts a package on private damages actions in antitrust cases


This article has been nominated for the 2014 Antitrust Writing Awards. Click here to learn more about the Antitrust Writing Awards. Summary On 11 June 2013, the European Commission (“Commission”) adopted a proposal for a directive on how citizens and companies can bring damages claims under EU (...)


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