2007 - 2008: Dean of the Faculty of Law, Leibniz University Hannover

Since 1998: Professor of Civil Law and Legal History at Leibniz University Hannover

1995 - 1998: Professor of Civil Law and Modern History of Civil Law at Viadrina University Frankfurt (Oder)

1992 - 1995: Visiting Professor in Würzburg, Erlangen, Münster, Frankfurt (Main) and Greifswald

1992: Postdoctoral thesis in law (Habilitation) and licence to teach legal history, legal theory and civil law at university level (Lehrbefugnis).

1988: Doctoral thesis in law and doctoral examination

1987 - 1992: Lecturer at the Johann Wolfgang Goethe University Frankfurt (Main)

1981: First State Examination in Law; 1987: Second State Examination in Law in Frankfurt (Main)

1975 - 1987: Studies of Law, Philosophy and History in Erlangen, Frankfurt (Main) and Berlin, 1978/79 in Italy (Rome) and 1981/82 in the USA (New York City)