Question juridique clé
Whether the federal appeal was admissible in a dispute over collocation of AHV contribution claims
Solution extraite
The dispute concerned a public-law AHV contribution claim, not a civil-law claim; therefore the federal appeal was not admissible.
Motifs extraits
Only disputes over claims of federal civil law fall within the civil appeal route. AHV contributions are public-law in nature, and no provision excludes their examination in collocation proceedings, but that does not make the matter civil.