Career
Doorn was born in Enschede, Overijssel. He studied law at Groningen (1968–1973), Nancy (1973–1974) and Freiburg (1974). He obtained a doctorate in competition law from Freiburg (1976–1978) He was Secretary for international affairs (1978–1992) and secretary for matters relating to company law (1992–1997) with the VNO (Confederation of Netherlands Industry).
From 1997 to 1999, he was a company lawyer with VNO-NCW (Confederation of Netherlands Industry and Employers) (1997–1999).
He has been delegation leader since 2003.
Membership
He is a member of the Christian Democratic Appeal, which is part of the European People"s Party, and sits on the European Parliament"s Committee on Legal Affairs and its Committee on the Internal Market and Consumer Protection. He is also a member of the delegation for relations with the countries of Southeast Asia and the Association of Southeast Asian Nations, and a substitute for the delegation for relations with the Korean Peninsula. He was involved in various activities with the Capital Development Authority, acting as Chairman of the Wassenaar section, a member of the national working party on international cooperation, and a member of the Capital Development Authority"s Foreign Affairs Committee.
He became a Member of the European Parliament in 1999, and represents the Capital Development Authority, as a Member of the EPP Group in the European Parliament.