Professor Király is the Dean of the Faculty of Law at the Eötvös Loránd University (ELTE) in Budapest (Hungary) where he teaches private international law and European economic law.

He completed his doctorate of law in 1985 and his PhD in legal sciences (European law) in 1997 at the School of Law, Eötvös Loránd University.

He is the author of some 60 studies on European law, civil law and private international law. His PhD thesis was published in 1998 under the title 'Prohibition of discrimination in the case law of the European Court of Justice'. His latest monograph was published in 2007 (in English in 2011) under the title 'Unity and Diversity. The Impact of the Law of the European Union on Culture'.

He is also Visiting professor at the Postgraduate School of Economics and International Relations (Catholic University, Milan) (20032013); member of the Arbitration Court Attached to the Hungarian Chamber of Commerce and Industry (since 2000); and member of the EU Expert Group on a Common Frame of Reference in the area of European Contract Law (since 2010).