Kernrechtsfrage
Whether the appeal had to be considered despite the absence of a power of attorney for counsel.
Extrahierter Entscheid
No. Because counsel failed to file the required power of attorney or request an extension after being warned, the appeal was inadmissible.
Extrahierte Begründung
Under Art. 40 para. 2 LTF, representatives must prove their authority by producing a power of attorney. The Federal Supreme Court does not provide a further time limit to cure this defect in the same way as for an advance on costs, and counsel had been duly warned of the consequences.