An administrative dispute is a dispute before a court about the legality of an administrative act, that is, a form of judicial control over the administration. The court decides on the legality of administrative acts by which state administration bodies and bodies with public powers decide on rights and obligations in administrative matters. The basic act on administrative disputes is the Law on Administrative Disputes, which states in its articles that it regulates the jurisdiction, composition of the court and rules of procedure on the basis of which administrative courts decide on the legality of decisions of public law bodies on the rights, obligations and legal interests of natural and legal persons. The subject of an administrative dispute, as prescribed by ZUS in Article 3, can be an assessment of the legality of an individual decision by which a public legal body decided on the right, obligation or legal interest of a party in an administrative matter (administrative act). According to ZUS, an administrative dispute cannot be conducted in matters in which court protection is provided outside of an administrative dispute. The new law on administrative disputes is an important procedural regulation that governs the judicial review of the legality of decisions made by public law bodies. The Law on Administrative Disputes is a continuation of the administrative dispute reform that began in 2010. The new ZUS, unlike the previous one, stipulates that the court can resolve the matter on merits even when the plaintiff did not expressly request it. Over the course of more than ten years, several amendments and additions to the then valid Law on Administrative Disputes were adopted, in order to eliminate the problems observed in its application.