Dr. Christian Lemke

Dr. Christian Lemke


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  • Arbitration
  • Litigation


  • English
  • German

Practice areas

  • Competition law
  • Intellectual property law
  • IT law


  • Automotive
  • Consumer products and retail
  • Insurance
  • IT and software
  • Media, advertising and telecommunication
  • Technology
  • Trade



Christian Lemke has been attorney since 1993. Since 1996 he has been partner of Heissner & Struck.

He is both Certified Specialized IP-Lawyer (“Fachanwalt für Gewerblichen Rechtsschutz”, 2006) and Certified Specialized IT-Lawyer (“Fachanwalt für Informationstechnologierecht, 2008”). His practice areas are intellectual property law, data protection law, IT law, copyright law and competition law. He has extensive experience in providing legal support to clients in complex IT projects, related contract negotiations and dispute resolution, as well as in the enforcement of intellectual property rights.

In addition to his professional work as a lawyer he is Vice President of the German Federal Bar (Bundesrechtsanwaltskammer), President of the Hamburg Bar (Hanseatische Rechtsanwaltskammer) and Vice Chair of the Future of the Legal Profession and Legal Services Committee,Council of Bars and Law Societies of Europe (CCBE).

Certified Specialized Lawyer (Fachanwalt) for IT law

Certified Specialized Lawyer (Fachanwalt) for intellectual property law

Rechtsanwalt (Heissner & Struck PartG mbB, Hamburg, Partner since 1996)
Ph.D. at Max-Planck-Institute for Comparative and International Private Law, Hamburg, supervisor Prof. Dr. Dr. h.c. Ernst-Joachim Mestmäcker

1990 – 1992
Legal traineeship (Referendariat) at the Hamburg Higher Regional Court, internships with inter alia Federal Cartel Office, Berlin, law firm, Los Angeles, and German American Chamber of Commerce, Chicago
Second State Examination

Military service

1984 – 1988
Study of Law, University of Hamburg
First State Examination

Study of Physics, University of Hamburg

  • Stakeholders Advisory Board, European Union Intellectual Property Office (EUIPO)
  • Europe Global Advisory Council, International Trademark Association (INTA)
  • Advisory Board, European Lawyers Foundation, The Hague
  • German Association for the Protection of Intellectual Property and Copyright Law (GRUR)
  • German Association of Law and Informatics (Deutsche Gesellschaft für Recht und Informatik e.V.)
  • German Institution of Arbitration (DIS)
  • Indirect Violation of Freedom of the Press by Minister's Statement that Reading a Newspaper Indicates Anti-Constitutional Sentiments, comment on Administrative Court of Duesseldorf, judgment of May 21, 2021, 1 K 5973/20, GRUR-Prax 2021, 451
  • Unzulässiges Legal-Tech-Inkasso, comment on Regional Court of Hannover, Judgment of Feb. 1, 2021, Case 18 O 34/17 – Zuckerkartell, BRAK-Mitt. 3/2021, 189 et seq.
  • LegalTech-Gesetz: Vom Ansatz verfehlt und nicht verbrauchergerecht („LegalTech Act: Misguided in its Approach and not Consumer-friendly“), RechtDigital 2021, 224 et seq.
  • Keine Verpflichtung eines Unterlassungsschuldners zur Löschung von Folgeeinträgen – x Rechtsanwälte II („No obligation of a Respondent for an Injunction to delete Subsequent Entries – x Lawyers II“), comment on Higher Regional Court of Düsseldorf, Order of Oct. 13, 2021, Case 20 W 71/19, GRUR-Prax 2021, 140
  • Verantwortlichkeit für Markenrechtsverletzung in Internet-Verzeichnissen („Responsibility for Trademark Infringements in Internet-Directories“), comment on Higher Regional Court of Düsseldorf,Order of Sept. 9, 2019, Case 20 W 71/19 GRUR-Prax 2020, 213
  • EUROPEAN UNION: FACK JU GÖHTE Not Contrary to Accepted Principles of Morality INTA Bulletin, April 1, 2020 Vol. 75, No. 6
  • „Verantwortlichkeit für Marken­verletzung im Internet“ („Responsibility for Trademark Infringements in the Internet“), comment on the judgement of the European Court of Justice of March 3, 2016, Case C-179/15 – „Daimler AG/Együd Garage Gépjárműjavító és Értékesítő Kft“, IWRZ 4/2016, 168
  • “Registering Advertising Slogans as Trademarks in the United States and Europe” (co-author, together with Rachel B. Rudensky, Ackerman Senterfitt), INTA Bulletin, April 15, 2016, Vol. 71, Nr. 7
  • “How to Best Position your Position Mark in Europe”, INTA Bulletin, 01.03.2016, Vol. 71, Nr. 4
  • “Fehlerhafte Beurteilung der Voraussetzungen einer Markenverletzung”, comment on the judgment of the European Court of Justice of July, 16, 2015, Case C-681/13 – “Diageo/Simiramida”, IWRZ 2015, 35 ff.
  • “Counterfeits in Transit and Shipments to Non-Commercial Buyers in Europe: Current Proposals for Legislative Reform”, INTA Bulletin, April 1, 2015, Vol. 70, No. 7, p. 13 et. seq.
  • “Trademarks, Registered Designs and Minimum Standards of Copyright Protection in Germany”, INTA Bulletin, July 1, 2014, Vol. 69, No. 12, p. 6 et. seq.
  • “What’s in a Name? Comparing Rights and Recoveries for False Suggestion of a Connection in the United States and Germany” (co-author, together with Rachel B. Rudensky, Akerman Senterfitt, West Palm Beach, Florida, USA), INTA Bulletin, August 1, 2013, Vol. 68, No. 14, p. 5 et. seq.
  • “Back to the Roots: Conflicts Between Trademarks and Company Names in Germany Before and After Céline”, INTA Bulletin, April 15, 2013, Vol. 68, Nr. 8, S. 10
  • “Trademarks Versus Titles of Works: When Do Software ‘Titles’ Infringe Trademarks Under German and European Law?”, INTA Bulletin, Jan. 1, 2013, Vol. 68, No. 1, p. 1, 6 et seq.
  • “Obtaining Preliminary Injunctions – Recent Developments in Germany”, INTA Bulletin, Sept. 1, 2012, Vol. 67, No. 15, p. 10
  • “Beweissicherung” (“Preserving Evidence”) in: Leitfaden Online-Recht (“Guidelines Online-Law”), Hamburg@work e.V., 2009
  • “Are branches of law offices to be designated as such?”, BRAK-Mitteilungen (Federal Bar Association Report) 2008, 146 – 150
  • „Vertragsgestaltung bei IT-Projekten“ (“Negotiating and Drafting IT Contracts”) in: Handbuch IT-Recht (Handbook IT-Law), Hamburg@work e.V., 2006
  • „Softwareüberlassung auf Dauer“ (“Software Licensing”) in: Handbuch IT-Recht (Handbook IT-Law), Hamburg@work e.V., 2006
  • “Entertainment Law”, Co-Author, Kluwer Law International, 2001
  • „Was haben Lizenzverträge mit Websites zu tun?“ (“What do license agreements have to do with websites?”) Co-Author, Hamburg@work e.V., 1999
  • „Der fehlerhafte Aufsichtsratsbeschluss“ („The incorrect supervisory board resolution“), doctoral thesis, Nomos Verlagsgesellschaft (issued by Ernst-Joachim Mestmäcker and Kurt Biedenkopf), 1994



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22299 Hamburg