This article analyzes the main dogmatic problems caused by the term to appeal of protection against the state administration according to the 1980 Constitution. This includes the study of the existence of a term, its extension, and the beginning of its computation, in addition to the way its interruption is understand when the person previously goes to the administrative proceedings. In all these areas, protection sentences reveal an attempt by the Courts to balance access to justice with legal certainty, a matter that in the Chilean legal system belongs to the law.