Questione giuridica chiave
Whether requiring production of a power of attorney and declaring the appeal inadmissible if it was not filed within the set deadline constituted excessive formalism, bad faith, or arbitrariness.
Decisione estratta
No. The authority may require proof of authority ex officio, and non-compliance after an express warning may lead to inadmissibility.
Motivazione estratta
The appellant was expressly invited through counsel to file the power of attorney and warned of the consequence of non-production. This did not make access to justice excessively formalistic. The cantonal law could be interpreted to allow such a request, and the requirement also serves proper administration of justice.