Parallele Anwendbarkeit von Grundrechtecharta der EU und nationalen Grundrechten
Pursuant to its Article 51 (1), the EU Charter of Fundamental Rights covers the implementation of EU law. Since 2014, the Estonian Supreme Court has applied the assumption that the Charter, in principle, does not preclude parallel applicability of national-level fundamental rights in areas subject to EU law, although the primacy, unity, and effectiveness of EU law must not be compromised thereby. The Member State's margin of appreciation should not be considered a precondition for the relevance of national fundamental rights. Even mandatory norms of EU law, which inevitably require certain national measures (e.g., permission to use a piece of music for sampling as in CJEU case C-476/17: Pelham), do not exclude the applicability of constitutional rights (here, the composer's copyright), though these can justify their restriction. Hence, the relevant piece of EU legislation itself must be valid. The CJEU should follow the principle of constitutional plurality in dialogue with national courts when examining the validity of EU norms restricting national fundamental rights. A parallel analysis of the national constitution and Charter by the competent national court would assist the CJEU in issuing a preliminary ruling. The most favourable standard of the fundamental rights in sense of the Article 53 should not be determined on merely abstract terms. Instead, the results of parallel analysis in light of the pending case should be of decisive importance. One conclusion presented is that in cases of multipolar conflict, there remains the possibility that a even fundamental right of one person that is derived from a national constitution can sometimes justify infringement on the charter-based right of another if there is no secondary legal balance of legal positions. In addition, exceptional situations might exist wherein fundamental principles of national constitutions may be granted precedence over the effectiveness of EU law.