Digital and innovation law


Fresh perspective. Detailed analysis. Discussing solutions. Identification of industry competitors. Understanding your business model. Making a difference. Innovation.


Respecting an agreed scope of work. Explaining. Discussing fees. Detailed breakdown of time spent. Acting responsibly.


Responsive service. Straight talking. Collaborative approach. Long-term relationships. Solution-orientated approach.



• advertising management • Cookies • RTB • targeted advertising • CMP • contracts • vendors • consent • Sapin law

Personal data

• GDPR • DPO audits • Cookies • profiling / AI • privacy policy • co / subcontracting contracts • CNIL controls


• compliance audit • CGU / CGV • risk assessment • uberisation • requalification in wage-earning • intellectual property • mobile applications

Business Law

• contracts • strategic partnerships • intellectual property • brands • pre-litigation • digital litigation • international development


An attorney at the Paris bar since 1998, Hélène assists and advises businesses in the digital industry such as mobile and website publishers, platforms, software, or SaaS, publishers in the adtech sector, the Internet of Things, cybersecurity, and innovative services.

Background: Hélène began her career in 1999 working in commercial law and new technologies at the law firm Azam-Darley, at the time of the deployment of Internet access to the public.

She joined the Yahoo! Group in 2000 where she served as Head of Legal responsible for the launch of services for France, and subsequently for southern Europe. She became General Counsel France in 2005.

Passionate about the liabiliy of intermediaries,  protection of personal data, online content and innovative services, Hélène founded her law firm in 2011, focusing her practice on digital and innovation, start-ups and the advertising ecosystem.

Hélène has lectured on electronic commerce (Masters) and cybersecurity Assas Paris II, Malakoff and DU Cybercriminalité in Montpellier.

Hélène Langlois Avocate au barreau de Paris

57 Avenue Franklin Delano Roosevelt 75008 Paris

+ 33 (0) 1 42 89 26 29

+ 33 (0) 6 11 38 44 10