Czech Constitutional Court, judgment of 31 January 2012, Pl. ÚS 5/12. A Legal revolution or negligible episode? Court of Justice decision proclaimed ultra vires - Common Market Law Review View Czech Constitutional Court, judgment of 31 January 2012, Pl. ÚS 5/12. A Legal revolution or negligible episode? Court of Justice decision proclaimed ultra vires by - Common Market Law Review Czech Constitutional Court, judgment of 31 January 2012, Pl. ÚS 5/12. A Legal revolution or negligible episode? Court of Justice decision proclaimed ultra vires 49 4 Common Market Law Review