Questão jurídica principal
Whether the cantonal court violated the disposition principle by awarding spousal maintenance above the wife's minimum requested amount in provisional measures under Art. 137 CC.
Decisão extraída
Yes. In provisional measures concerning spousal maintenance, the judge is bound by the parties' conclusions; awarding more than the minimum requested was ultra petita.
Fundamentação extraída
The Federal Supreme Court held that spousal maintenance in this setting is governed by the disposition principle, unlike child-related measures subject to the official inquiry principle. The cantonal court's contrary view was arbitrary.