The Legal 500

Twitter Logo Youtube Circle Icon LinkedIn Icon
Work +32 2 893 20 95
Fax +32 2 893 22 98

Prof Dr Jos Dumortier

Work +32 2 893 20 95

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).


EU regulatory: Privacy and data protection

Within: EU regulatory: Privacy and data protection

time.lex garners praise for its 'extensive expertise in GDPR'; for example, Geert Somers is advising the European Commission's Directorate-General for Justice and Consumers on a communication campaign concerning GDPR, and in another matter, Jos Dumortier is assisting the Government of Cyprus with GDPR implementation matters concerning Cyprus' upcoming National Health Scheme.  Frederic Debusseré, Hans Graux and Edwin Jacobs are other names to note.

[back to top]

EU regulatory: information technology

Within: EU regulatory: information technology

The 'pragmatic and solution-minded' team at time.lex 'know the fintech scene very well', and have been handling cloud projects, e-commerce matters and digital signatures over the past year. Hans Graux is advising the European Commission on compliance with the EU electronic communications law in the Western Balkans and Turkey. Frederic Debusseré, Jos Dumortier, Edwin Jacobs and Geert Somers are also noted.

[back to top]

Industry focus: IT and telecoms

Within: Leading individuals

Jos Dumortier - time.lex

Within: Industry focus: IT and telecoms

Technology, IP, media, e-business and entertainment-focused firm time.lex has a 'unique' approach, provides 'quick and pragmatic' advice, is 'capable of dealing with highly complex IT and IP matters' and is 'highly recommended for both national and international' projects. The group is regularly instructed by the Belgian government, particularly the Belgian Federal Ministry of Policy and Support to advise on various IT and data protection matters. Edwin Jacobs and counsel Stefan Van Camp are 'great to work with'; the duo acted for the Belgian Ministry of Telecom in court proceedings relating to telecom services that warn drivers about speed limit controls. A team, led by Frederic Debusseré, 'who stands out for his pragmatic and thorough advice', represented the Belgian Data Protection Authority in proceedings against Facebook regarding its use of social plug-ins, cookies and screen pixels to track users. Hans Graux and Jos Dumortier is another key name to note.

[back to top]

Back to index

Legal Developments in Belgium

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to