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Denise Lebeau-Marianna

Head of Intellectual Property and Technology, France
Denise is an expert on data protection. She is really attentive, sharp and has a good relationship with the regulator.
Client, Chambers Europe 2024

Denise Lebeau-Marianna assists her clients on data protection global compliance projects and implementation of governance structure as well as more specific data processing such as those implemented in the framework of global programs on anti-corruption , anti-money laundering fight against terrorism financing and counterfeiting, implementation of fraud detection solutions on e-commerce web sites or e-discovery procedures. She advises clients in health data processing and telemedicine projects in relation with the authorities (CNIL ASIP).

Denise has a 20-year experience in new technologies law: including contentious and non contentious aspects of computer and internet law, e-commerce, and data protection regulation. She is a EuroPriSe certified expert in data protection and CIPP/E accredited.

In charge of the India Desk at her former law firm, Denise contributed to the Eurupee report of the MEDEF in 2008 and she regularly holds seminars on comparative Indian-French law.

Professional QualificationsAvocat admitted to the Paris Bar
  • French
  • English
  • University Paris XI, Master IT Law, 1993
  • ESSEC, iMD en Business, 1991
  • University Paris II Panthéon-Assas, Master Private Law, 1989


Team recognitions:

  • Legal 500 – Industry focus: IT and internet – Tier 1 – 2024
  • Legal 500 – Data Privacy And Data Protection – Tier 1 – 2024
  • Chambers Europe – Band 1 – TMT – 2024

Individual recognitions:

  • Chambers Europe – TMT Data Protection – Band 1 – 2024
  • Legal 500 - Data Privacy & Data Protection - Leading Individual – 2024
  • Best Lawyers – Information Technology Law – Privacy and Data Security Law – 2017-24

Insight Overview

Denise Lebeau-Marianna is a lecturer in EU Data Privacy Law:

  • at Sciences Po - Master Enterprise, Consumers and Data Laws;
  • at the Paris II University - Panthéon-Assas - DU - Data Protection Officer.



Denise regularly conducts seminars on how companies can prepare for the new data protection regulation, on connected objects, cybersecurity, big data, social networks, cloud computing as well as marketing and digital transformation.

  • Webinar: EDPB recommendations for safeguarding data transfers after Schrems II, November 2020
  • Webinar: Schrems II CJEU Judgment: Implications on Data Transfers, July 2020
  • Webinar: After the lockdown, how can a new way of organising work be conciliated with the business interests?, May 2020

Prior Experience

Before joining DLA Piper, Denise Lebeau-Marianna developed and led the data protection practice of an international business law firm for over twenty years.

Memberships And Affiliations

  • ACSEL (Association pour la confiance dans l'économie numérique) - Denise is the Legal Head of the Digital Identity Commission and Confidence in the Digital Economy Task Force
  • AMCHAM - Core Team Member of Privacy Task Force Paris
  • AFCDP (Data Protection Correspondents Association) - Member
  • Cyberlex - Association of Professionals in Law and New Technologies
  • IAPP (International Association of Privacy Professionals) - Member
  • Chamber of Commerce and Industry France-India (CCIFI) - Secretary General