He was born on 30 June 1947. He is a full professor of constitutional law at the Ljubljana University Law School, where he has continuously taught Constitutional Law more than forty years and European Human Rights Law for twelve years. He is the author of numerous books and articles in the area of constitutional law. He has been a Member of Parlament for ten years (1990-2000). He has written various articles and books on federalism and the gaining of Slovenia's independence, e.g., Ustavnopravni vidiki osamosvajanja Slovenije [Constitutional Aspects of the Gaining of Slovenia's Independence] (Official Gazette 1992). In the beginning of 2000, as an expert witness concerning the constitutional position of Herzeg-Bosnia, he testified before the Hague Tribunal for the Former Yugoslavia (ICTY), regarding which he published the book Geneza neke zablode [The Genesis of a Certain Delusion], which appeared in two editions at the same time in Zagreb, Sarajevo, and Idrija. He published several articles in reviews in Croatia, Serbia, Macedonia, Montenegro and Bosnia and Herzegovina.
In 2007 he was elected president of the Slovenian Constitutional Law Association and published the book Evropsko pravo človekovih pravic [European Human Rights Law] (Ljubljana University Law School, Ljubljana 2007). After he was elected constitutional judge in 2000, he participated with papers at many international conferences and congresses (Santiago, Ann Arbor, Erevan, Regensburg, Vienna, Sofia, Seoul, Vilnius, Cape Town, Dubrovnik, Athens, Sarajevo, Skopje, Podgorica, Bled, Ljubljana etc.). He published the book Človekove pravice in ustavna demokracija [Human Rights and Constitutional Democracy] (Študentska založba, Ljubljana, 2010) in which he has tried to prove a doctrine of “positive activism” of the Constitutional Court, an activism which is in favour of higher standards of protection of human rights and freedoms. The translation of this book was published in Belgrade in 2012 (Službeni glasnik Srbije). He was awarded a Crystal Star in 2008 for promotion of European law in Slovenia. Each in last 13 years he has been leading excursions with students to the European Court of Human Rights and has organized the annual competition Rubicon on presenting judgments of the ECrtHR. He was Vice-President of the Constitutional Court of Slovenia (2007-2009). In 2011 he became director of the Constitutional Law Institute, Ljubljana.