Questão jurídica principal
Whether the federal appeal was admissible without a statement of grounds where the amount in dispute was below CHF 4,000.
Decisão extraída
The appeal was inadmissible because, under Art. 67(4), a supporting brief was required and none was filed.
Fundamentação extraída
The value of both the claim and counterclaim remained below CHF 4,000. Their amounts could not be aggregated under Art. 60(2), even though the claims were mutually exclusive. Therefore the appeal had to comply with the special form of Art. 67(4); failure to do so rendered it ineffective.