Catherine Muyl leads the firm’s Intellectual Property & Technology Practice in Paris. While her practice focuses on intellectual property litigation, she also advises clients on brand protection, IT agreements and data privacy.

    Catherine has extensive experience representing clients in domestic and cross-border IP disputes related to patents, trademarks, copyright, registered designs, software and related rights (including databases). She also represents clients in infringement and cancellation cases and inventorship disputes.

    Catherine represents clients on trademark issues before the French and European Union Trademark Offices as well as on domain name disputes (including UDRP procedures).

    Since 2001, Catherine has been advising clients in the area of data protection. She advises on GDPR compliance and represents clients in breach response and related litigation.

    Award Mouse thought multimedia interface book medal screen monitor

    Intellectual property 

    • Handling trademark and copyright cases for a major player in the field of electronic goods.
    • Advised an international consortium in relation to a patent infringement action for use of certain standards in the financial field.
    • Successfully represented a large aerospace client in an inventorship case related to the landing gear of a well-known airplane.
    • Represented client in a complex and multi-faceted patent litigation in the field of oil production which gave rise to 17 decisions issued by French civil and criminal courts; 15 of them were successful and two were commented upon in legal magazines on account of them raised interesting legal issues.

    Data Protection

    • Assisted a global technology company with responding to a data breach that impacted 3.4 million users. Services included reporting the breach to the French Supervisory Authority and advising on litigation issues.
    • Representing a worldwide technology platform in a high-profile case brought by a non-profit organization where the action was based on the French Data Protection Law.


    • CAPA, 1987
    • Université Paris 1 Panthéon-Sorbonne, DEA Droit des Affaires, 1986
    • Université Paris 1 Panthéon-Sorbonne - King’s College London, Degree in English and French laws, 1985


    • Paris, 1988

    Memberships and Affiliations

    • APRAM (Association des Praticiens du Droit des Marques et des Modèles)
    • IAPP (International Association of Privacy Professionals)
    • LES (Licensing Executive Society)
    • AFCDP (Association Française des Correspondants à la protection des Données à caractère Personnel)
    • ChIPs (Advancing Women in Technology, Law and Policy)


    • French
    • English
    • Listed in 2020 The Legal 500 Europe, Middle East & Africa (France: Intellectual Property: Trade marks and Designs)
    • Listed in Décideurs Juridiques (Trademarks and Designs: Forte Notoriété 2; Telecom: Pratique Réputée; Data Protection: Forte Notoriété 2)
    • Nominated by Managing Intellectual Property as 2020 IP Star in France in the Patent and Trademark categories. 

    {{}} {{insights.source}} {{insights.type}}
    Award Mouse thought multimedia interface book medal screen monitor