Abstract
With regard to the occurrence of infringements of which a party to the proceedings is not responsible, the legislator has allowed for the possibility of their removal by introducing the institution of reinstatement of deadline time limit. The article discusses formal conditions of the request for reinstatement of a time limit, i.e.: formal requirements of procedural documents, substantiation of the circumstances that justify the request and carrying out the delayed procedural act. The analysis of the discussed issue has been carried out against the background of the views of the doctrine and the judicature.