Key legal question
Whether the appeal had to be disregarded because counsel failed to prove authority by producing a power of attorney.
Extracted holding
Yes. The required power of attorney was not filed within the extended deadline, so the appeal was inadmissible in simplified procedure.
Extracted reasoning
Under Art. 40 para. 2 LTF a representative must prove authority by power of attorney. If it is missing, the Court sets a deadline under Art. 42 para. 5 LTF and warns of non-consideration. The deadline expired without compliance.