Questione giuridica chiave
Whether the cantonal court correctly declared the CNA appeal inadmissible for lack of proper form and content.
Decisione estratta
The inadmissibility ruling was too formalistic; the defective filing should have been treated as timely and capable of regularization.
Motivazione estratta
Under Art. 61 let. b LPGA, even an unmotivated filing suffices if the intention to appeal a specific decision is clearly expressed within the deadline. The obvious mix-up in the annexes was recognizable, and the court should have warned the appellant and allowed regularization; refusing to do so violated the prohibition of excessive formalism.