Prof Dr Jos Dumortier > time.lex > 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: Information technology

(Leading individuals)

Jos Dumortiertime.lex

At time.lex, the ‘very available‘ team garners praise for its ‘expert knowledge and experience in the field of IT‘. The client base includes prominent government entities and multinational corporations. The notable individuals in the group are Ruben Roex, the ‘very knowledgeableGeert Somers, cloud computing expert Hans Graux, Jos DumortierEdwin Jacobs (who has expertise in fintech) and Frederic Debusseré, who handles IT contracts.

Belgium > Industry focus: IT and telecoms

(Hall of Fame)

Jos Dumortiertime.lex

time.lex‘s position as a niche IT, IP and media law firm results in ‘very good knowledge‘ of the sector, and particular strength in regulatory and compliance instructions – both contentious and non-contentious – including from the national government and the Belgian Data Protection Authority. Founding partner Jos Dumortier leads the team along with international legislative adviser Hans Graux, contracts negotiators Geert Somers and Edwin Jacobs, and GDPR experts Frederic Debusseré and Ruben Roex.

Belgium > EU regulatory: Privacy and data protection

The ‘very pragmatic‘ team at time.lex is ‘very strong in privacy law‘ and demonstrates an ‘excellent combination of academic knowledge and practical approach‘. The client roster includes government bodies and energy, construction and healthcare sector entities, among others. Key contacts include Jos Dumortier, who has established expertise in IT and data protection law, and Frederic Debusseré, who provides ‘clear and practical advice‘. Also recommended are Geert Somers (‘an excellent lawyer‘), fintech expert Edwin JacobsHans Graux and Ruben Roex, who ‘combines a very pragmatic approach with deep knowledge of both the law and the latest technological developments‘.