Question juridique clé
Whether the civil appeal against the cantonal paternity judgment was admissible insofar as it challenged federal-law issues.
Solution extraite
The appeal was not admissible because the appellant did not substantiate any reviewable federal-law criticism of the maintenance and paternity ruling; constitutional complaints could not be heard in this appeal.
Motifs extraits
Federal appeal review was limited to federal law; objections based on constitutional rights and cantonal cost rules were outside its scope, and the brief contained no concrete federal-law criticism of the merits.