Questão jurídica principal
Whether the Federal Supreme Court could enter into the appeal despite non-payment of the required advance on costs.
Decisão extraída
The appeal could not be heard because the appellant did not pay the advance on costs even within the grace period.
Fundamentação extraída
Under Art. 62(3) BGG and the simplified procedure of Art. 108(1)(a) BGG, failure to pay the requested advance on costs leads to non-entry.