Kernrechtsfrage
Whether the deadline for filing the appeal brief should be restored after default
Extrahierter Entscheid
Restoration was refused because the omission amounted to gross negligence under cantonal procedure.
Extrahierte Begründung
Forgetfulness or mistaken calendaring of an important procedural deadline is generally gross negligence; here the filing was especially important because missing it caused the appeal to lapse, so heightened diligence was required.