Marie-Hélène Tonnellier

4.7 (35 reviews )

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Advertising Law Information Technology Law Intellectual Property Law +3 more

Recognized in Best Attorney USA since 2020

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About Marie-Hélène

Marie-Hélène Tonnellier is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising Law, Information Technology Law, Intellectual Property Law, Media Law, Privacy and Data Security Law and Technology Law.Marie-Hélène, who practices law in Paris, France, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marie-Hélène is held by other top lawyers in the same geographic and legal practice area.

Marie-Hélène, who practices law in Paris, France, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marie-Hélène is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Advertising Law

Information Technology Law

Intellectual Property Law

Media Law

Privacy and Data Security Law

Technology Law

Awards & Recognition

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Reviews

4.7 / 5

35 Reviews

1,040 Profile Views

Roberta Abernathy

Feb 01, 2026

Marie-Hélène Tonnellier did a great job handling my complex Advertising Law case from start to finish

Solid experience overall with the law firm of Marie-Hélène Tonnellier. They know Advertising Law inside and out and gave me great advice. Very helpful and got the job done exactly as they said they wo...

Erin Powlowski

Feb 01, 2026

Reliable lawyer you can count on - Marie-Hélène Tonnellier provided excellent service throughout

Dolores Koss

Feb 01, 2026

A very good experience overall with the entire team at Marie-Hélène Tonnellier's legal practice

It's hard finding a reliable lawyer these days, but Marie-Hélène Tonnellier in null is definitely one of the good ones. Would use them again if needed without hesitation. They are professional, respon...

Carrie Orn

Feb 01, 2026

Professional service and clear communication provided by Marie-Hélène Tonnellier in null

Suzanne Hamill

Feb 01, 2026

Finding Marie-Hélène Tonnellier was the best thing that happened during my tough Advertising Law battle

I was skeptical about hiring a lawyer for my Advertising Law issue in null, but Marie-Hélène Tonnellier changed my mind completely. They were professional, responsive, and most importantly, they got r...