The Constitutional Court (in Croatian Ustavni sud) is an independent court which reviews the constitutionality and lawfulness of different laws and regulations in Croatia and monitors protection of constitutionally guaranteed human rights and freedoms.
It works on the basis of the Constitution of the Republic of Croatia, the Constitutional Act on the Constitutional Court of the Republic of Croatia, and the Rules of Procedure of the Constitutional Court of the Republic of Croatia.
The Court may declare laws or regulations invalid if it determines that they conflict with a higher law or the Constitution of the Republic of Croatia You can only apply to the Constitutional Court if you believe that a certain law violates those human rights which are laid out in the Constitution of Croatia.
Only the Court and the institution who adopted the law or regulations can annul them. The Court can also choose the date from which a law has lost its force. For example, the Court may declare that the law you are complaining about was invalid all along and its application in your case violated your human rights. Or, it can decide that the law will no longer be in force from the day of the decision, but it was valid and in force when it was applied to you.
The decisions of the Constitutional Court are binding and they cannot be appealed.