Wilhelm specialises in the management of foreign clients’ patent and design portfolios in South Africa. The majority of Wilhelm’s clients comprise a wide range of overseas-based multi-national enterprises. Wilhelm was actively involved in setting up and implementing the electronic filing of patent applications and electronic file management within the Patent Overseas Filing Section. He is a fellow of the South African Institute of Intellectual Property Law, currently serves on the Companies and Intellectual Property Commission – South African Institute of Intellectual Property Law Patent Liaison Committee and he is the Co-chair of the American Intellectual Property Law Association’s (AIPLA) Africa Committee.