Questione giuridica chiave
Whether the suretyship deed constituted a sufficient debt acknowledgment for provisional mainlevée against the surety.
Decisione estratta
The Federal Supreme Court held that the cantonal court exceeded the limited scope of mainlevée review by relying on extrinsic elements to interpret the parties' intent; the title had to be assessed on its formal probative value, and further findings on the debtor company's acknowledgment were needed.
Motivazione estratta
Provisional mainlevée is a documentary summary procedure focused on the existence of an enforceable title, not on the substantive validity of the claim. If the distinction between joint and independent suretyship is doubtful, that must be resolved in a debt-liberation action after full evidence.