The European Union has always stated its commitment to human rights and over the time has managed to bring this issue to the forefront, including in its relations with other states. It has introduced in its economic and trade agreements a clause expressly stipulating that the respect for human rights is an essential element of relations between the parties. With the entry in force of the Treaty of Lisbon, the Charter of Human Rights acquired binding legal force. So, the possibility of the European Union's accession to the European Convention for the Protection of Fundamental Rights and Freedoms and the ways in which it could be put into practice were discussed again. But in the context of accession, the questions arise as to how the two jurisdictional institutions can coexist, namely the European Court of Human Rights and the Court of Justice of the European Union, what relationship will develop between them and what mechanisms need to be developed for both the Charter and the Convention can be applied.