Tycho de Graaf is a professor of Technology and Private Law. His research and teaching covers civil law and focuses on technology and private law. De Graaf joined the Department of Civil Law of the Institute of Private Law in Leiden on 1 August 2017. He teaches general private law and an elective course in Technology and Private Law, and conducts research in the interdisciplinary SAILS programme (Society, Artificial Intelligence and Life Sciences). Before entering academia full time, he was a lawyer at Nauta Dutilh N.V. for 20 years and was awarded a PhD in Leiden in 2006 with a thesis on liability limitations.

De Graaf is in charge of the postgraduate Contracts specialisation course of Juridisch PAO Leiden and is a lecturer on the postgraduate specialisation courses National and International Contracts and Informatics Law of the Grotius Academy. He is also editor of the journals Maandblad voor Vermogensrecht and Computerrecht, a regular contributor to the WPNR, a deputy judge at the District Court of The Hague and arbitrator at the Dutch foundation for the resolution of ICT disputes (Stichting Geschillenoplossing Automatisering (SGOA)).