Questão jurídica principal
Whether the complaint could be entertained despite non-payment of the court advance within the deadline and grace period.
Decisão extraída
The complaint could not be entertained because the required advance was not paid within the deadline or the non-extendable grace period.
Fundamentação extraída
Under Art. 62 BGG, a party must pay an advance for expected court costs; if the advance is not paid within the grace period, the Federal Supreme Court must not enter into the matter. Service by uncollected registered mail counted as valid service under Art. 44(2) BGG.