The provisions of the Charter are addressed to …
… the Member States only when they are implementing Union law.
National regulation, which had NOT been enacted in order to implement EU law was challenged
situations cannot exist where national legislation falls within the scope of European Union law without those fundamental rights being applicable
backImplementation of the law of the Union by national provision, when
Charter rights are not applicable, if union law does not impose any obligation on Member States with regard to the situation at issue in the main proceedings
backApplicability, if necessary for guaranteeing effectiveness of EU provisions - Ideas behind:
Once a fundamental rights dispute is exclusively governed by EU law - like the European arrest warrant
Article 53 does not in any case guarantee a supremacy of rights and freedoms protected under national constitutions, which establish a higher level of protection than the Charter
But compare Art 53 GRC: Charter must not be interpreted as restricting human rights and fundamental freedoms guaranteed by international treaties and/or MS‘ constitutions
backCharter rights are applicable also