EN
The goal of an article is a trial to present differences which take place between normative, because binding on the grounds of the Code of Administrative Procedure, notions of inactivity of organs of public ad-ministration and excessive lengthiness of administrative procedure. Presenting hitherto attainments of representatives of the theory of ad-ministrative law and administrative courts, the author comes to a con-clusion that nowadays trials of establishing strict and unambiguous cri-teria allowing to distinguish both notions turned to be inefficient.