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Julien
Horn

Partner

Julien Horn’s practice encompasses all aspects of intellectual property, information technology law and commercial law.
He represents the firm’s clients in litigation relating to patents, trade marks, designs, copyright and related rights, as well as in litigation in the fields of information technology, the internet, cinema and audiovisual. He has also developed a specific expertise in commercial law litigation such as unfair competition, passing off, unfair commercial practices, or termination of long-standing business relationships.
Julien has gained considerable exertise in alternative dispute resolution mechanismes such as mediation and judicial conciliation and has successfully assisted many clients in settlement negotiations.
He also assists the firm’s clients with advice, contractual negotiations and the sale or acquisition of companies with portfolios of intellectual property rights or technological assets.
He advises the firm’s clients on their strategy for building up, managing and defending their portfolios of intellectual property rights on a global basis.
He teaches intellectual property litigation to LLM students at the Université Paris-XI Faculty of Law Paris Saclay.

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Capabilities

Practices

  • Intellectual Property
  • Business litigation
  • Commercial law and distribution law
  • Digital and Technology Law
  • Media and audiovisual law

Sectors

  • Consumer goods, distribution, international trade
  • Media and Entertainment
  • Life sciences, health
  • Transport and mobility

Focus

  • Lawyers-Notaries
  • UPC –- Patents
  • Space

Languages

  • French
  • English

Qualifications

  • Admitted to the Paris Bar in 1994
  • 1992 Postgraduate diploma (DESS – LLM-equivalent) in IT law, University of Paris-XI, Faculty of Law of Paris-Orsay
  • 1991 Master degree in business law, specialty in Intellectual Proterty Law, University of Paris-II, Faculty of Law of Pantheon-Assas

Bars

  • Paris

Teachings given

  • Intellectual property litigation in the Master 2 “Droit des Créations Numériques” and “Droit de l’Innovation Technique” at the University of Paris-XI

Professional associations

  • Member of INTA and APRAM

Awards

Best Lawyer-Julien Horn.jpg
Awards
Best Lawyers
Julien Horn recognized in the 2026 edition of Best Lawyers France
Awards Patent Law
IAM Patent 1000
De Gaulle Fleurance Ranked Again in IAM Patent 1000 2025 – Patent Litigation, France
Awards Intellectual Property
Le Point
De Gaulle Fleurance shines in literary and artistic property – Le Point – Statista 2025
Awards Intellectual Property
Le Point
Industrial property: De Gaulle Fleurance featured in Le Point – Statista 2025

News

Articles

Chambers France 2025
Articles 13 February 2025
Chambers Global 2025: De Gaulle Fleurance Once Again Recognized