Decision of the Constitutional Court on the Bundesvergabeamt (1995)

Decision of the Constitutional Court on the Hochschulreife (1997)

Decision of the Constitutional Court on the referendum on the Constitutional Treaty [petition rejected on formal grounds] (2005)

Decision of the Constitutional Court on the Lisbon Treaty I [petition rejected on formal grounds] (2008)

Decision of the Constitutional Court on the Lisbon Treaty II [petition rejected on formal grounds] (2009)