Questão jurídica principal
Whether the mother had standing to appeal the cantonal judgment in the paternity-recognition challenge
Decisão extraída
She could not appeal as a party because she lacks passive standing in the action; her participation as an accessory intervener did not help because the child's position did not support an appeal.
Fundamentação extraída
Standing to sue or defend is governed by substantive law. In an action contesting recognition, the mother has active standing by law but not passive standing. As an accessory intervener, she may act only compatibly with the supported party; here the child did not appeal and thus her appeal was incompatible.