C – 107/98 Teckal (tzv. TECKAL kritéria)

C-26/03 Stadt Halle a RPL Lochau

C-15/13 Datenlotsen Informationssysteme

C – 340/2004 Carbotermo

C 553/15 UNDIS

C 295/05 ASEMFO

C-458/03 Parking Brixen

C-324/07 Coditel Brabandt

C-231/03 Coname

C-183/11 Econord