Leyden University (1968). Substitute Justice, Court of Appeals, Arnhem. Professor of Law, University of Nijmegen.
Member, Committee on Consumer Affairs of the Social-Economic Council (Society for Epidemiologic Research ).
Working as a partner of STIBBE, BLAISSE & Delaware JONG. Admitted to the bar, 1978, Amsterdam.
Association Literaire et Artistique Internationale (ALAI). Association Internationale pour la Protection de la Propriet6 Industrielle (International Association for the Protection of Intellectual Property). Lique Intemationale du Droit de la Concurrence.
Association Benelux des Conseils en Marques et Modeles (BMM).