This paper addresses the issue of the institution of cassation appeal in civil cases against the backdrop of the constitutional and conventional standards of the right to a court. The aim of the analysis is to discuss the right to a court in constitutional and conventional case-law with reference to the principles of two-instance proceedings and review of judgments. The considerations also involve an assessment of how recent amendments introducing new remedies against final judgments may affect the coherence of the legal system and the complementarity of limitations on access to the cassation appeal institution in civil cases.