Kernrechtsfrage
Whether the filing of 9 December 2007 met the formal requirements of a valid complaint under Art. 61 lit. b ATSG.
Extrahierter Entscheid
No. The filing did not contain an adequate, case-specific reasoning and therefore did not satisfy the formal requirements; the cantonal court was entitled to refuse entry after the cure period expired.
Extrahierte Begründung
A complaint before the cantonal insurance court must include a concise statement of facts, a request for relief, and a short reasoning. The claimant's statement merely asserted that she could hardly hold objects because of swollen hands and did not address the challenged administrative decision at all. Since the deficiency was not cured within the set time limit, non-entry was justified.