Judgment_paragraph 60 · Microsoft Mobile Sales International Oy and Others v Ministero per i beni e le attività culturali (MiBAC) and Others (C-110/15)

60It is only quite exceptionally that the Court may, in application of the general principle of legal certainty inherent in the EU legal order, be moved to restrict for any person concerned the opportunity of relying on a provision which it has interpreted with a view to calling into question legal relationships established in good faith. Two essential criteria must be fulfilled before such a limitation can be imposed, namely, that those concerned should have acted in good faith and that there should be a risk of serious difficulties (see, inter alia, judgments of 10 January 2006, Skov and Bilka, C‑402/03, EU:C:2006:6, paragraph 51; 3 June 2010, Kalinchev, C‑2/09, EU:C:2010:312, paragraph 50, and 27 February 2014, Transportes Jordi Besora, C‑82/12, EU:C:2014:108, paragraph 41).