Question juridique clé
Whether the mother had standing to bring or support a paternity disavowal counterclaim
Solution extraite
The mother had no standing to sue in disavowal; however, this defect had no practical effect because only the son's claim mattered on appeal.
Motifs extraits
Doctrine and case law deny the mother standing; the lower court should have rejected rather than merely declared moot her counterclaims, but the cantonal decision rested only on the child's claim.