OYAT
Acting for domestic and international clients alike, OYAT serves the digital and IT needs of major public and private bodies. The established team is well positioned to advise on outsourcing, digital transformation and licensing issues, as well as handling litigation. New technologies, such as AI and robotics, are another area of expertise for the group. Industry veteran Marie-Hélène Tonnellier leads the team, and is noted for her in-depth knowledge of IT, media, e-commerce and data protection issues. Charlotte Barraco-David is likewise recommended.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘Although the team is small, it is comprehensive in its coverage of the technology sector. The team is experienced and is very much at the forefront of developments in the technology sector.'
'They are always responsive and provide very clear and practical advice. We have full confidence in them and their abilities, particularly to deal with English-speaking clients. They are also very reasonable in terms of fees.’
'Marie-Hélène Tonnellier is a well-known name in the technology sector and is always seen at the key technology law conferences, both as participant and speaker. She has incredible breadth of expertise and is always super responsive. She works very hard for clients and is passionate about getting the best outcomes for them. As well as her incredible technical abilities she is also extremely charming and wonderful to work with. I would highly recommend her to my clients and have done so on many occasions over the years.’
‘Highly responsive and display an excellent sense of understanding client needs. They are very easy to deal with and this is achieved by establishing an excellent relationship of trust and confidence. Their fees are reasonable and they provide commercial and pragmatic solutions that are clearly explained and expertly documented.'
‘Marie-Hélène Tonnellier and her team have a wide range of skills and experience that cover the broad range of TMT issues and the standards of excellence are high whatever the issue. I am therefore able to refer work to them with absolute confidence in their knowledge of their sector particularly with regard to artificial intelligence, data exchange and new developments such as the Data Act and the Data Governance Act, which are raising important new challenges for our clients.’
Key clients
- Hachette Livre
- Econocom
- Sopra Steria
- Dawex
- Eurovision
- Edreams Odigeo
- Conforama
- Pôle emploi
- SNCF CONNECT
- ESA (European Space Agency
- Bharti
- Service d’Information du Gouvernement (SIG)
Work highlights
- Advising Edreams Odigeo, a major online travel company, on various IT issues.
- Advising the Service d’Information du Gouvernement on all its digital issues, and particularly on the setting up of a platform called the State Design System.
- Assisting Nouvelle Aquitaine Mobilité with the drafting and negotiation of all contracts with selected IT service providers.
Lawyers
Rising stars
Leading individuals
Marie-Hélène Tonnellier is the head of the Digital/IP department and advises on IT projects, in particular those related to the digital transformation strategy of companies, in the context of technological litigation, on issues related to new technologies (artificial intelligence, drones, robots, blockchain, etc.) and to personal and/or public data, as well as in the context of e-commerce projects. She teaches in the Master 2 Digital Law program at the University of Paris-Saclay. Marie-Hélène worked as a partner at Latournerie Wolfrom for 23 years, after having worked for one year in London and 9 years at Moquet Borde et Jeantet.
Practice head
The lawyer(s) leading their teams.
Marie-Hélène Tonnellier