Question juridique clé
Whether the court could enter into the action despite non-payment of the required cost advance after the final deadline.
Solution extraite
No. Because the claimant failed to pay the advance even within the non-extendable grace period, the court could not enter into the action.
Motifs extraits
Under Art. 62 BGG, the party must pay an advance on estimated costs; if the advance is not paid within the deadline and grace period, the Federal Supreme Court must not hear the filing. The order setting the grace period was deemed served under Art. 44(2) BGG.