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For 30 years, Derriennic built its success on a unique approach to its practice.
Composed of lawyers specialized mainly in IT, Derriennic has always been and continues to be a pioneer in this niche sector. Derriennic has also developed its practice into other areas of law (business law, labor law, collective proceedings, construction and real estate law, compliance, company law, etc.). Whether they are major accounts or smaller businesses, we offer each of our clients the most suitable answers, by establishing lasting relationships based on constant commitment and monitoring.
Derriennic Associates has built its success on its teams’ ability to innovate. When tackling the problems raised by new technologies, the office marries its high level of legal skills with tremendous creativity, delivering new solutions to keep you one step ahead.
The extensive range of skills and the breadth of experience behind the office’s lawyers equip them to handle any and all legal problems you may put before them. Derriennic Associates relies on its culture of new technologies to help it devise innovative strategies to optimise the way you do business.
The cohesion of the teams at Derriennic Associates is rooted in strong shared values. Large or small, every client receives the most suitable solution, and the office forges a durable relationship based on a constant commitment and permanent monitoring.
- Derriennic Associés maintains its Band 2 position in the TMT ranking (Chambers France 2025).
- François-Pierre Lani maintains his Band 2 position in the individual ranking for TMT: Information Technology.
- Alexandre Fievée enters the Band 3 in the individual ranking for Data Protection
Leading Firm 2025
Legal 500 ranks Derriennic Associés as :
- « Tier 1 » in the category « Industry focus : IT, Telecom and Internet » ;
- « Tier 2 » in the category « Data Privacy and Data Protection » ;
- « Tier 3 » in the category « Intellectual property : Copyright » ;
- « Tier 4 » in the category « Intellectual property : Trade marks and designs ».
With Europe's economic and political development, legal assistance for businesses and individuals now requires a European dimension.
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Syntec Numérique is the professional chamber for IT services companies (SSII), software publishers, and technology consulting firms.
Read moreDerriennic Associés is a member of two professional associations:
– APSSIS (Association for the Security of Health Information Systems) – the only organization dedicated to the cybersecurity of health information systems and data. <em>”The association brings together and supports the multi-professional ecosystem of healthcare IT security, addressing the security, ethical, and regulatory aspects of digital transformation.”</em>
– HealthCare Data Institute – A think tank association dedicated to transforming the healthcare system through the scientific and economic use of health data for the benefit of healthcare stakeholders, patients, and citizens.
