The paper is focusing, first, on the aim of codifying case law of the Court of Justice and on the field of application of the Charter of Fundamental Rights in Article 51 (1), reflecting instinctive warries of some Member States about its extensive use beyond the Union's powers. Then, some observations about a narrower application of the Charter by the Court of Justice favouring effectiveness of the co-operation instruments of Union law and a its broader use in other cases follow.
The perception of this dichotomy by national authorities of constitutional judiciary is reminded, too. Also the necessity of mutual trust between the Member States in equivalent fundamental rights protection shall be highlighted.
Consequently, the approach of the Court of Justice to the relevance of the Charter for the Member States - whether adequate or arbitrary restrained, weakening the protection and frustrating the expectations of Union citizens - will be sketched. Finally, the reasons for a reserved approach of the Constitutional Court of the Czech Republic to the direct application of the Charter, referring rather to national Charter of Fundamental Rights and Freedoms "irradiated" by the EU standard of protection or to the European Convention on Human Rights, will be explained.