Quinn emanuel trial lawyers

Bronfentrinker, Boris

Boris Bronfentrinker



Boris Bronfentrinker is a partner in Quinn Emanuel’s London office, and Co-Head of the Competition Litigation Practice in the UK. Boris is a solicitor advocate practicing in complex commercial litigation, with particular expertise in competition law. He has represented clients, both as claimants and defendants, in leading and high profile cases in both the English High Court and the Competition Appeal Tribunal, as well as coordinating competition litigation claims in  other jurisdictions globally.  Boris is experienced in not only litigating cases to judgment but also resolving claims through alternative dispute resolution, such as mediation. 

Boris also has experience of representing clients in the defence of investigations by the European Commission and national competition authorities, including sector inquiries, as well as managing internal investigations into competition law and bribery/corruption issues.

Previously, Boris was a partner at specialist claimant competition litigation firm Hausfeld & Co LLP. Before joining Hausfeld, Boris spent seven years at Freshfields Bruckhaus Deringer’s competition practice, primarily representing defendants. As a result, Boris has a unique and detailed knowledge and understanding of the strategic considerations and issues faced by claimants and defendants.

Who’s Who Legal named Boris as one of their inaugural Thought Leaders – Competition in 2017 and once again in 2018, placing him among the very best in the world in the area of competition litigation, as judged by his peers, corporate counsel and market sources. Who’s Who Legal states that Boris is “a lawyer absolutely at the top of his game,” and is widely praised for his “instinctive and immediate analysis of litigation issues and tactics,” noting that “what Boris doesn’t know isn’t worth knowing.” They also named him a Future Leader – Competition 2018. In 2017, Boris was selected by International Who’s Who of Competition as one of the Future Leaders and also as one of the leading Plaintiff Lawyers. In 2016, The Lawyer magazine selected Boris in its Hot 100 list of solicitors, barristers, and general counsel across all practice areas in the UK. Global Competition Review included Boris in its list of the 40 under 40 best competition lawyers in the world in 2016. Boris was also recognized by Financial News in its 2016 list of 40 Under 40 Rising Stars in the European Legal Profession for advising clients on critical issues to their business and helping to drive the development of Europe’s financial legal industry. Legal 500 UK 2014 describes Boris as having “an amazing work ethic” and “confidence and poise” (2014) and "smart, knowledgeable and prodigiously hard-working" (2015). Chambers UK 2015 has listed Boris as a Leading Individual in the field of competition law private enforcement. Whilst Super Lawyers 2014 and 2015 have identified him as a Rising Star in the field of European law.



  Representative Clients

  • Daimler AG
  • Fiat Chrysler Automobiles
  • Continental AG
  • Deutsche Bahn AG
  • Samsung
  • Michelin
  • SGL Carbon SE
  • PSA Peugeot Citroën
  • Hilding Anders
  • Hays plc
  • Visa Europe
  • MTN Group
  • BP plc
  • FMC Corporation
  • Spire Healthcare
  • Wyeth
  • Tesco plc
  • GoPro Inc.

  Notable Representations

  • Advising and representing a leading European/US car manufacturer in respect of claims it may have arising from the various auto parts cartels around the world, as well as advising on the response to subpoenas issued in the auto parts MDL.
  • Representing a group of European bedding manufacturers in claims for damages in the English High Court for losses arising from the polyurethane foam cartel.
  • Representing PSA Peugeot-Citroen in a claim for damages in the English High Court for losses arising from the car glass cartel.
  • Advising the Unsecured Creditors Committee of Exide Technologies on global stand alone claims for damages in respect of potential anti-competitive conduct concerning the market for LME lead.
  • Advising and representing a multinational in relation to the European Commission’s E-commerce sector inquiry.
  • Representing Deutsche Bahn AG in a claim for damages in the Netherlands for losses arising from the pre-stressing steel cartel.
  • Representing a group of purchasers of elevators and escalators in claims for damages in the Netherlands for losses arising from the elevators and escalators cartel.
  • Representing Dunlop Oil & Marine Limited in defence of investigations by the European Commission, the United States Department of Justice, the Japanese Fair Trade Commission, the Korean Fair Trade Commission and the Australian Competition & Consumers Commission in respect of the marine hose cartel, and defence of the follow-on damages litigation.
  • Representing SGL Carbon SE in defence of a damages claim brought by purchasers of carbon brushes in the Competition Appeal Tribunal following on from the European Commission decision in respect of the mechanical and electrical carbon cartel.
  • Representing 564 companies in claims for damages against British Airways in respect of losses arising from the air cargo cartel. One of the largest competition damages claims, it raised novel legal arguments regarding the ability to recover global damages in England.
  • Representing Hays plc in defence of an Office of Fair Trading investigation in respect of anti-competitive conduct in the construction recruitment sector, including an appeal to the Competition Appeal Tribunal against the penalty that resulted in the largest penalty reduction to that date.
  • Representing Koninklijke Philips and three other patentees in defence of a claim by SanDisk alleging abuse of dominance. This case is one of the leading English judgments on the interpretation of the Judgments Regulation.
  • Representing Visa Europe in defence of investigations by European competition authorities in respect of alleged anti-competitive practices relating to the setting of multilateral interchange fees.
  • Representing Wyeth in the European Commission’s pharmaceutical sector inquiry.
  • Advising MTN Group in respect of an internal investigation conducted by Lord Hoffmann in to allegations of bribery and corruption made by Turkcell relating to the award of a mobile telephone licence in Iran, including supporting the defence of proceedings brought against MTN in the United States by Turkcell.
  • Representing a major oil company in defence of claims threatened and brought in Europe alleging a breach of contract arising from invocation of force majeure as a result of the EU sanctions against Libya.
  • Representing FMC Corporation in a breach of contract claim against Unilever in the English High Court.
  • Advising a major oil company on the preparation of an internal investigations manual.


  • King’s College London
    (Post Graduate Diploma in EC Competition Law, 2007)

  • The University of Sydney
    (Bachelor of Laws, 1st Class Honors, 1999)

  • The University of Sydney
    (Bachelor of Economics, 1997)


Solicitor, England and Wales, Higher Rights of Audience (Civil and Criminal); Solicitor, New South Wales (Australia)


  • Russian
  • English

  Prior Associations

  • Hausfeld & Co LLP, London
    • Partner, 2013-2014

  • Freshfields Bruckhaus Deringer LLP, London
    • Senior Associate, 2006-2013

  • Freehills, Sydney
    • Associate, 2004-2006

Professional Activities

  • Member, Law Society Competition Section
  • Member, British Institute of International and Comparative Law
  • Member, Competition Law Association
  • Member, American Bar Association, Section of Antitrust Law
  • Trained Mediator, Centre for Effective Dispute Resolution (CEDR)
  • Boris is a regular conference speaker on the subject of private enforcement of competition law and third party funding.