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Harald Kahlenberg
Partner

Dr. Harald Kahlenberg

Rechtsanwalt

Languages
  • German
  • English
  • French

Harald Kahlenberg has long-standing experience advising his clients on EU and German merger control and competition law cases and in numerous merger control proceedings, he obtained approval from the European Commission and the German Federal Cartel Office. He in particular focuses on coordinating multinational merger control notifications in the European Union and worldwide and regularly advises on the structuring of joint ventures, business cooperations and distribution systems.

 

Harald represents companies in fine and administrative proceedings of the European Commission, the German Federal Cartel Office and the regional competition authorities in Germany as well as in competition disputes before the European and German courts. He also advises on competition-related compliance issues, such as setting up compliance systems or competition law audits and trainings.

 

Harald chairs the World Law Group’s Antitrust & Competition Practice Group and both JUVE, a German legal publisher, as well as Chambers regularly recommend him in their rankings. He joined CMS in 1997 and was made partner in 1999.

Awards & Recognitions
01
  • Quote
    His client handling skills, speed and thoroughness are impressive
    Lexology 2025
  • Quote
    He is the go-to person for high-stakes matters
    Lexology 2025
  • Quote
    Harald is an outstanding lawyer with great judgement
    A Competitor, Lexology 2025
  • Quote
    Listed for Competition / Antitrust
    Deutschlands beste Anwälte 2025 – Handelsblatt in Kooperation mit Best Lawyers
  • Quote
    Listed for Mergers and Acquisitions
    Deutschlands beste Anwälte 2025 – Handelsblatt in Kooperation mit Best Lawyers
  • Quote
    Listed as notable practitioner
    Chambers Global, 2025
  • Quote
    Listed as notable practitioner
    Chambers Germany, 2025
  • Quote
    "Harald Kahlenberg offers a broad competition law practice that encompasses both merger control advice and representation in follow-on damages actions."
    Chambers Germany, 2025
  • Quote
    „Besonders hervorzuheben ist Dr. Harald Kahlenberg, dessen Erfahrung, Einsatz und Urteilskraft und wirtschaftliches Verständnis seinesgleichen sucht. Das ganze Team arbeitet schnell, ist hervorragend erreichbar und flexibel.“, Mandant
    The Legal 500 Deutschland, 2025
  • Quote
    Führender Name im Kartellrecht (über 50 Jahre)
    JUVE Handbuch, 2024/2025
  • Quote
    „Oft empfohlen“ für Kartellrecht
    JUVE Handbuch, 2024/2025
  • Quote
    „angenehm u. erfahren“, Wettbewerber
    JUVE Handbuch, 2024/2025
  • Quote
    Listed for Competition / Antitrust
    Deutschlands beste Anwälte 2024 – Handelsblatt in Kooperation mit Best Lawyers
  • Quote
    Listed as notable practitioner
    Chambers Europe, 2024
  • Quote
    Listed as notable practitioner
    Chambers Global, 2024
  • Quote
    Führender Name im Kartellrecht (über 50 Jahre)
    JUVE Handbuch, 2023/2024
  • Quote
    „Oft empfohlen“ für Kartellrecht
    JUVE Handbuch, 2023/2024
  • Quote
    „gut u. kompetent“, Mandant
    JUVE Handbuch, 2023/2024
  • Quote
    "He has a good overview and is well connected.", client
    Chambers Europe, 2023
  • Quote
    Listed as notable practitioner
    Chambers Europe, 2023
  • Quote
    Listed as leading individual
    Chambers Europe, 2023
  • Quote
    Listed for Competition / Antitrust
    Deutschlands beste Anwälte 2023 – Handelsblatt in Kooperation mit Best Lawyers
  • Quote
    Listed as notable practitioners
    Chambers Global, 2023
  • Quote
    "He has a good overview and is well connected.", client
    Chambers Global, 2023
  • Quote
    "has a great deal of experience", competitor
    JUVE German Commercial Law Firms 2022 (GCLF)
  • Quote
    Führender Berater im Kartellrecht (über 50 Jahre)
    JUVE Handbuch, 2021/2022
  • Quote
    "Recommended" for Antitrust
    JUVE German Commercial Law Firms 2022 (GCLF)
  • Quote
    Nennung für Kartell- und Wettbewerbsrecht
    Deutschlands beste Anwälte 2022 – Handelsblatt in Kooperation mit Best Lawyers
  • Quote
    Nennung als Top Anwalt für den Bereich Kartellrecht
    WirtschaftsWoche Top-Kanzleien 2021; In Kooperation mit: Handelsblatt Research Institute
  • Quote
    Listed as notable practitioner
    Chambers Global, 2021
  • Quote
    "Harald Kahlenberg is very competent and extremely thorough"
    The Legal 500 EMEA, 2023
  • Quote
    "Peers and clients say: 'He is a great practitioner' and 'Harald is the clear number one guy'"
    Who's Who Legal 2021 – Competition
  • Quote
    "Recommended" for Media and Antitrust
    JUVE German Commercial Law Firms 2021 (GCLF)
  • Quote
    Führender Berater im Medienkartellrecht
    JUVE Handbuch, 2020/2021
  • Quote
    Führender Berater im Kartellrecht
    JUVE Handbuch, 2020/2021
  • Quote
    Nennung als Top Anwalt für den Bereich Kartellrecht
    WirtschaftsWoche Top-Kanzleien 2020; In Kooperation mit: Handelsblatt Research Institute
  • Quote
    Listed as Leading Individual
    Chambers Europe, 2022
  • Quote
    Listed as notable practitioner
    Chambers Europe, 2022
  • Quote
    Listed as notable practitioner
    Chambers Global, 2022
  • Quote
    Listed as Leading Individual
    Chambers Global, 2023
  • Quote
    "Dr. Harald Kahlenberg: very good network in the area, broad experience, very good availability.", client
    The Legal 500 EMEA, 2022
  • Quote
    "Harald Kahlenberg and Rolf Hempel are an excellent team. Both are experienced antitrust lawyers and are extremely thorough and reliable.", client
    The Legal 500 EMEA, 2022
  • Quote
    "Good strategist", client
    The Legal 500 EMEA, 2022
  • Quote
    "Harald Kahlenberg and his team: very experienced, competent, reliable and responsive.", client
    The Legal 500 EMEA, 2022
  • Quote
    „kompetent u. gut“, Mandant; „angenehm u. erfahren“, Wettbewerber
    JUVE Handbuch, 2022/2023
  • Quote
    Führender Berater im Kartellrecht (über 50 Jahre)
    JUVE Handbuch, 2022/2023
  • Quote
    „Oft empfohlen“ für Kartellrecht
    JUVE Handbuch, 2022/2023

Publications

  • "Die 10. GWB-Novelle: Mehr als eine Digitalisierungsnovelle", Betriebsberater (BB) 2021, 579(together with Dr Dietmar Rahlmeyer, Peter Giese)
  • "Die 10. GWB-Novelle (GWB-Digitalisierungsgesetz) – der Regierungsentwurf", Betriebsberater (BB) 2020, 2691(together with Dr Dietmar Rahlmeyer, Peter Giese)
  • Competition Rules, Doing Business in Europe, 2017, Sweet & Maxwell(together with Prof. Dr Matthias Eck)
  • Kommentierung von § 36 Abs. 1 GWB (Materielle Fusionskontrolle), Loewenheim/Meessen/Riesenkampff, Kartellrecht, Band 2 GWB 2006
  • "Identifizierende Pressemitteilungen des Bundeskartellamts bei der Einleitung von Untersagungsverfahren", zusammen mit Dr. Rolf Hempel, WuW 2006, p. 127 ff
  • "Neues Deutsches Kartellgesetz", zusammen mit Dr. Christian Haellmigk, BB 2005, p. 1509 ff
  • "Erste praktische Erfahrungen mit Zusagenentscheidungen nach Art. 9 Verordnung (EG) Nr. 1/2003", zusammen mit Kai Neuhaus, EuZW 2005, p. 620 ff
  • "Referentenentwurf der 7. GWB-Novelle: Tiefgreifende Änderungen des deutschen Kartellrechts", zusammen mit Dr. Christian Haellmigk, BB 2004, p. 389 ff
  • Handbuch des Vertriebsrechts, 2. Auflage, C.H. Beck 2003, Martinek/Semler/Habermeier (Hrsg.)

Memberships & Roles

  • Chair of the World Law Group’s Antitrust & Competition Practice Group
  • International Bar Association (IBA)
  • Studienvereinigung Kartellrecht e.V.

Lectures list

  • Numerous lectures and seminars on EU and German competition law

Education

  • 1995: PhD
  • 1991: Second state examination in law, Munich
  • 1987 - 1990: Trainee lawyer in Munich, including training with Cleary Gottlieb Steen & Hamilton in Brussels in 1990
  • 1987: First state examination in law, Munich
  • 1983 - 1987: Law studies in Munich and Geneva

Further reading

  • JUVE Awards 2023: CMS recognised as Law Firm of the Year for Antitrust

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