Ronit Kreisberger KC

Ronit Kreisberger KC

Call: 1999 | 2019 (Ireland) | Silk: 2019

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    MA (Oxon) 1995, BCL (Oxon) 1997

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    Ronit is a leading silk at the Competition Law Bar. She is at the forefront of heavy weight competition litigation, acting for Claimants and Defendants alike.

    “Ronit is an outstanding barrister and a pleasure to work with. Her advocacy is clear and forceful. She is a real star in competition litigation in the tech sector.”

    She is in demand as a “fearless” and “fantastic advocate” who is “very very determined”; “Meticulous and thoughtful; judges listen and warm to her”. “She is brilliant. A very extraordinary legal mind. Very clear presentation and effective in getting her points across. I would not hesitate to instruct her.’’

    In the field of collective claims, Ronit is leading for: MUFG in the FX collective claims and the first ever carriage dispute in the CAT; Mr Le Patourel in a £600 million claim against BT relating to landlines the first ever stand alone claim to be certified in the CAT;  Dr Kent & Ms Coll in multi- billion pound claims against Apple and Google for their App Store charges; Dr Liza Lovdahl Gormsen in a billion pound claim against Meta for its data practices; and Mr Pollack in the £13 billion pound Google Ad Tech claim.

    She also has particular expertise in cases at the intersection of competition and IP law and in the pharmaceutical sector, in cases such as Sportradar v BetGenius, Cabo v MGA and acting for Merck in the Pay for Delay litigation (Paroxetine and Lundbeck) and the pharmaceutical company Flynn in Flynn / Pfizer v CMA.

    Ronit is listed in Band 1 by Chambers & Partners for competition law and group litigation silks.

    In 2022, Ronit was awarded Competition Law / EU Silk of the Year by Chambers and Partners; she featured for the 2nd time in the Lawyer’s Hot 100; and has been shortlisted for the W@Competition 5* Survey.

    • News
    • Competition


      Competition Appeal Tribunal

      • Pollack v Google
      • Gormsen v Meta
      • Kent v Apple
      • Coll v Google
      • Justin Le Patourel v BT
      • Sportradar v BetGenius & Football DataCo
      • Evans v Barclays Bank & Ors: FX follow on damages
      • O’Higgins v Barclays Bank & Ors
      • Arla v Iveco: trucks cartel damages action
      • Flynn Pharma / Pfizer v CMA
      • Merck v CMA (Paroxetine Pay for Delay)
      • AXA/HCA v CMA
      • CDI AndersElite v OFT
      • Ballast Nedam v OFT
      • Aggregate Industries v OFT

      High Court / Court of Appeal

      • Cabo v MGA (Patents Court) 2021
      • Allianz v Barclays Bank & Ors: FX follow on damages
      • Sainsbury’s / Asda v MasterCard / Visa 2018
      • Illumina, Inc v Premaitha, 2016
      • Ecotricity v Tesla
      • Scottish Ministers/Department of Health, Social Services and Public Safety for Northern Ireland & Ors v Reckitt Benckiser
      • Chemistree v Roche Products: 2012
      • Chemistree v Teva Pharmaceuticals: 2011
      • Intecare Direct v Pfizer: 2009
      • BAGS v AMRAC: 2008, Chancery Division; 2009, Court of Appeal
      • UV v Nominet
      • The Leaflet Company v Royal Mail
      • Cityhook v BT & Ors
      • AAH and others v Pfizer (2007) EWHC 565
      • Inntrepreneur v Crehan (2006) UKHL 38
      • MAN ERF v Wootton Trucks Ltd (2006) EWCA Civ 1042

      European Courts

      • C-307/18 Paroxetine (Pay for Delay)
      • C-307/18 Lundbeck (Pay for Delay)
      • Case T-343/17 Cathay Pacific v Commission: Air Cargo Round II
      • T-111/08 MasterCard v Commission: interchange fees
      • T-38/11 Cathay Pacific v Commission: air cargo surcharges appeal
      • C-58/08 Vodafone and Ors v UK (2007) All ER (D) 120: challenge to the Roaming Regulation

      Other cases 

      • Advising a party in connection with the OFT’s investigation into allegations of competition law infringements by Mercedes-Benz and dealers of M-B trucks and vans
      • Acting for the OFT in investigation into MasterCard’s credit card interchange fees
      • Acting for a major chemicals company in commercial arbitration; breach of Article 101
      • Acting for Kerry Foods in relation to its completed acquisition of Headland Foods
    • Pharmaceutical law

      Ronit “rated very highly indeed” by instructing solicitors who “recommend her for pharma sector matters in particular”. She has an impressive list of pharmaceutical clients which include: Merck, Teva, Pfizer and Roche.


      Recent highlights of Ronit’s pharmaceutical practice:

      • Flynn / Pfizer v CMA
      • Acting for Merck in its UK and EU appeals against the Commission Decision in the Lundbeck “Pay for Delay” case and the CMA decision on paroxetine;
      • Successfully representing a number of pharmaceutical companies in a series of separate High Court proceedings brought by Chemistree Homecare alleging that conditions attaching to the supply of drugs infringed EU rules on competition / the supply of pharmaceuticals
      • Acting for the Northern Irish and Scottish health bodies in their claims for damages against Reckitt Benckiser for abuses in relation to the supply of Gaviscon
    • Media & sports law
      • Ronit is recommended for media, entertainment and sport
      • She acted for Amrac and Racing UK courses in the landmark Turf TV case on collective exclusive licensing of broadcasting rights, in which they successfully defeated the claims of the major bookmakers in the High Court, Court of Appeal and Supreme Court
      • She regularly advises sports bodies and business operating in the field of sport on their online/media/audio-visual licensing arrangements


    • Telecommunications

      Ronit acted for Vodafone in its appeal against the Roaming Regulation.

      She has acted for mobile phone operators in appeals to the CAT and advises companies and regulators in the field of telecoms regulation. Ronit also advises on utilities regulation, particularly in the regulation of water companies.

    • What the directories say

      Competition Law

      She is excellent, so bright, sharp and strategic.” “She is a masterful silk to work with.” “Ronit Kreisberger KC’s hearing preparation and advocacy is second to none; she can get to grips with the substantive, procedural and commercial aspects of cases very quickly, and can also confidently guide the court or tribunal through issues.” “Her opening submissions at trial were superb and she played a vital role in securing a positive outcome for the client.” – Chambers UK, 2024

      Leading Silk in Competition – Legal 500, 2024

      “Ronit is an outstanding barrister and a pleasure to work with. Her advocacy is clear and forceful. She is a real star in competition litigation in the tech sector.” – Chambers UK and Chambers Global, 2023

      Leading Silk in Competition – Legal 500, 2023

      Recommended in Competition, Who’s Who Legal Global Guide 2022

      “Ronit Kreisberger QC possesses “great knowledge of relevant UK and EU competition case law”, which allows her “to quickly get to the heart of complex legal issues.” – Competition, Who’s Who Legal UK Bar 2022

      “Ronit is razor sharp, commercial and clear.” “She is a team player; she worked well with the team, including economists and clients. She takes a lot of care in deciding the best strategy for the case.” “A lively mind; she’s great at picking up on the important points and has a practical way of addressing things.” – Chambers UK and Chambers Global, 2022

      Leading Silk in Competition: “A talented silk with an excellent reputation in competition collective actions.” – Legal 500, 2022

      “She is very clear, sensible, user-friendly and strategically astute.”Chambers UK and Chambers Global, 2021

      New Silk in Competition: ‘‘She is an excellent silk with a true specialism in pharma competition cases and unrivalled at her level. She is very knowledgeable of course, but commercial and pragmatic, and able to instil confidence on the part of clients.’’Legal 500, 2021

      Recommended in Competition, Who’s Who Legal Global Guide 2021

      “She gets how clients want to receive advice.” “You can talk to her about any significant case and she always has an interesting insight.” – Chambers UK and Chambers Global, 2020

      New Silk in Competition: ‘‘An extraordinary legal mind.’’Legal 500, 2020

      Ronit Kreisberger QC is “rated very highly indeed” by instructing solicitors who “recommend her for pharma sector matters in particular”.WHO’S WHO LEGAL (WWL) UK BAR 2019

      “Kreisberger has a good instinct for how competition regulators think and how far to take things.” – Chambers UK and Chambers Global, 2019

      Leading junior in Competition: ‘‘She has a stunning legal mind.’’Legal 500, 2018

      “Ronit’s strong technical skills and attention to detail make her a highly impressive and effective senior junior.” – Chambers UK, 2018

      Leading junior in Competition: ‘‘She has a track record of cases in the pharmaceutical sector.’’Legal 500, 2017

      Future Leaders 2017: Barristers Analysis: “Ronit Kreisberger is “an extremely talented barrister” according to respondents who state: “She is very persuasive and great in court; and she gets to the crux of the issue very quickly and in a straight-to-the-point manner.”” WHO’S WHO LEGAL (WWL), 2017

      “She is great to work with, a fantastic advocate and very, very determined.”Chambers UK, 2017

      Leading junior in EU and Competition: ‘Meticulous and thoughtful; judges listen and warm to her.’ – Legal 500, 2016

      “According to sources, she is “truly excellent” and “very practical”, and she “understands the commercial needs of the client”.”WHO’S WHO LEGAL (WWL) UK BAR 2016

      ” A bright counsel who is highly engaged.” “She provides clear, prompt advice and is very user-friendly.”Chambers UK & Chambers Global, 2016

      ”A great communicator.” – Legal 500, 2015

      “Ronit Kreisberger has experience across a wide range of industry sectors and is a “complete pleasure to work with” according to her peers.” – Who’s Who Legal UK Bar, 2015

      “Regularly instructed by the best law firms in the business, she is respected by peers and clients alike. Kreisberger has a strong private client base, and also acts for government bodies and the regulator. “A fearless advocate.” “She is very helpful, clear and commercial, and is able to advise on new legal developments.” “- Chambers UK, 2015

      Ronit is recognised as a leading Competition Law expert – International Who’s Who of Competition Lawyers and Economists 2014.

      “A former solicitor advocate who offers a high level of commerciality and has an excellent ability to interact with clients. As such she is very popular with leading law firms. Sources note that she is particularly strong in competition cases in the pharmaceutical and healthcare sectors.” “Provides clear, crisp advice and is very easy to work with.” “Has an excellent pedigree in competition law and is a very dedicated barrister.” – Chambers UK, 2014

      “The ‘approachable‘ Ronit Kreisberger is ‘easy to work with‘.” Recommended as a leading Junior under EU & Competition Law. – Legal 500, 2013

      “Ronit Kreisberger offers “crisp, clear advice,” is “easy to work with” and is a “practical and effective advocate.”” – Chambers UK, 2013

      Ronit Kreisberger is a recommended leading junior in EU and Competition Law. – Legal 500, 2012

      “Impressive, Ronit Kreisberger offers both “incisive analytical skills and compendious legal knowledge.” A “quietly destructive advocate who produces easy-to-follow oral submissions,” she is someone with “endless drive and determination.”“Intellectually stimulating to work with,” she acted for Cathay Pacific in its appeal against the European Commission’s decision to impose fines on 11 air cargo carriers for participating in a worldwide fuel and security surcharges cartel. – Chambers UK, 2012

      Ronit Kreisberger is a recommended leading junior in EU & Competition Law. – Legal 500, 2011

      Ronit Kreisberger is regarded as one of “chambers’ rising stars.” – Global Competition Review: Barrister Survey, 2011

      “Sources report “pleasant and successful dealings” with competition specialist Ronit Kreisberger. Like so many in the set, Kreisberger is perennially busy, with one recent example of her work being an appeal on behalf of CDI Corp against the OFT’s decision following its investigation into cartel activity in the construction recruitment industry.” Recommended in Competition/European Law – Chambers UK, 2011

      Group Litigation

      “Ronit Kreisberger is outstanding, knows the subject matter inside out and is well prepared and careful.”Chambers UK, 2024

      “A fantastic advocate.” “She has excellent knowledge of the law. Ronit gives focused, commercial advice and argues points very strongly.” “Ronit’s advocacy is clear and forceful. She is a real star in competition litigation in the tech sector.”Chambers UK, 2023

      EU Law

      New Silk in EU law: ‘‘She is brilliant. A very extraordinary legal mind. Very clear presentation and effective in getting her points across. I would not hesitate to instruct her.’’Legal 500, 2021

      New Silk in EU law: ‘‘Enthusiastic and conscientious, her submissions are clearly presented and well received.’’Legal 500, 2020

      Sports Law

      New Silk in Sport: ‘‘Very clear, concise and thorough. She is unrivalled at her level in sport and competition law.’’Legal 500, 2021

      New Silk in Sport: ‘‘A commercially minded silk.’’Legal 500, 2020

      Leading junior in Sport: ‘‘Very gifted – explains complex issues clearly, and provides absolutely precise advice.’’Legal 500, 2018

      Leading junior in Sport Law: ‘‘A very gifted lawyer, whose advice is absolutely precise.’’Legal 500, 2017

      Leading junior in Sport: “A confidence-inspiring barrister, who is delightful to work with and very hardworking.”Legal 500, 2016

      ”Incredibly user-friendly and able to distil complex legal concepts into plain English.” Leading junior in Sports law. Legal 500, 2015

      ‘Very competent and commercial.’ Ronit Kreisberger is a recommended leading junior in EU and Competition Law and Sports Law. Legal 500, 2014

      Ronit Kreisberger is listed as a recommended Junior in Media, Entertainment and Sport Law. Legal 500, 2013

      Ronit Kreisberger is a recommended leading junior in Media, Entertainment and Sport Law. Legal 500, 2012

      Media, Entertainment & Sport states that Ronit Kreisberger ‘fights very hard and is a great person to work with’.” Legal 500, 2011

    • Additional information

      Ronit joined Herbert Smith in 1998. She spent two court terms with the Court of Appeal as judicial assistant to Buxton and Otton LJJ in 2000. She also worked for Lord Woolf, the then Lord Chief Justice. Ronit also qualified as a Solicitor Advocate in 2005. At the time of leaving Herbert Smith in 2005, she was a senior associate in their EU, Competition and Regulation department where she advised commercial clients on all aspects of EU and UK competition law with a particular emphasis on competition litigation before the Competition Appeal Tribunal, private enforcement actions for damages and regulatory investigations by the UK and EU authorities into cartels (including leniency applications) and abuse of dominant position. She also regularly advised in relation to merger clearances/investigations and the compatibility of commercial agreements with Article 81 EC/Chapter I of the Competition Act including relevant Block Exemptions and on the consequences of non-compliance and other “self-assessment” issues. She has also organised/participated in a number of mock dawn raids and prepared a number of compliance manuals for clients. In her time at Herbert Smith, Ronit advised a broad spectrum of clients in industries including food processing, pharmaceuticals, industrial chemicals, water and sewerage, advertising and insurance.

    • Publications

      Ronit is a contributing editor to the sixth edition of Bellamy & Child, The European Community Law of Competition. She is a regular contributor to various EU/competition publications and often speaks at conferences/seminars on competition law.

      Ronit contributed to LexisPSL, to read the full article “The system of setting credit card inter-bank fees under threat” please click here. This article first appeared on Lexis PSL on 13 May 2013, click here for a free trial of Lexis PSL.