Prof Dr Jos Dumortier > Timelex > Brussels, Belgium > Lawyer Profile

Jos Dumortier photo

Work Department

Information Technology, Privacy & Data Protection.


Partner. Internationally renowned expert in privacy & data protection; IT, software and internet; e-signatures, e-security, e-authentication and identity management; digital and mobile marketing. Author of the Belgian 1992 Data Protection Act at the Belgian Government’s request.


Co-founder of TMT & IP boutique law firm time.lex in 2007. Professor em. of IT and data protection law at the University of Leuven. Founder and Director of the Interdisciplinary Centre for Law and ICT (ICRI) of the University of Leuven. Research Director at iMinds. Together with the Belgian Minister of Justice, the driving force behind the Belgian Cybercrime Centre of Excellence for Training, Research and Education. Formerly head of TMT at Lawfort (2005-2007) and associate at Simont & Simont (now Stibbe) (1981-1992).


Dutch, English, French.


Brussels Bar. +10 years Board member of Computerrecht, the leading Belgian-Dutch journal on IT and data protection law. Board member of the Belgian branch of the Federation of Telecommunications Engineers of the European Union (FITCE) and the European Association for e-Identity and Security (EEMA). Member of the Belgian Telecommunication Users Group (BELTUG).


Information Science (Free University of Brussels, 1983). PhD in Law (1981). Post-graduate studies (University of Nancy, 1974, and University of Heidelberg, 1975). Law degree (University of Leuven, 1973).

Lawyer Rankings

Belgium > EU regulatory: Privacy and data protection

(Hall of Fame)

Jos Dumortier – Timelex

The ‘outstanding legal team‘ at boutique Timelex is able to ‘navigate the complexities with ease‘. GDPR compliance projects and high-level privacy and data litigation are the core pillars of the practice, and the group is also regularly called on to assist European, national and regional governmental bodies with legislation preparation. Clients value the depth of the senior bench, which includes Jos Dumortier, Frederic Debusseré, Edwin Jacobs and Hans Graux. The firm also fields a strong roster of more junior experts; Ruben Roex is one such name.

Belgium > EU regulatory: Information technology

(Leading individuals)

Jos DumortierTimelex

Valued by clients for its ‘exceptional in-depth expertise‘, boutique Timelex focuses almost exclusively on the technology, privacy, data protection and intellectual property spheres. The team regularly assists European, national and regional governmental bodies with the preparation of legislation, and is also instructed by technology companies of all sizes to advise on compliance issues. The group is also well versed in handling technology-related disputes. The firm fields a large bench of specialists, including ‘internationally renowned‘ senior practitioner Jos Dumortier, Hans Graux, Geert Somers, Edwin Jacobs, Frederic Debusseré and Ruben Roex.

Belgium > Industry focus: IT and telecoms

(Hall of Fame)

Jos DumortierTimelex

Information technology regulatory work is the mainstay of Timelex‘s practice with the ‘exceptional experts and great minds’ at the firm frequently instructed by governments, governmental bodies, multinationals and SMEs in the IT space. IT-related litigation, assistance with the drafting of legislation in areas such as AI, and the creation of legal frameworks for electronic communication in the public sector stand out as areas of activity for the team. Jos Dumortier is well positioned to advise on cybersecurity and regulatory issues associated with technological platforms, while Hans Graux has in-depth knowledge of cloud services, e-identification issues and artificial intelligence. Geert Somers, Edwin Jacobs, Frederic Debusseré and Ruben Roex are further names to note.