Questão jurídica principal
Whether the father could rely on a lasting change of circumstances to seek modification of divorce support contributions.
Decisão extraída
A modification action requires new, important, and durable facts; the court had to assess the parties' financial capacities and the children's needs anew.
Fundamentação extraída
Art. 286 al. 2 CC, via Art. 134 al. 2 CC, allows modification only if the situation has changed notably and durably. The review must compare the financial capacities and needs since the divorce, and in child matters the court must establish the relevant facts ex officio.