Questão jurídica principal
Whether the respondent could challenge the validity of the 3 October 2006 auction sale in this revendication action.
Decisão extraída
Those objections could no longer be examined in this proceeding; they had to be raised by complaint before the supervisory authority over debt-enforcement offices.
Fundamentação extraída
The cantonal court and the Federal Supreme Court treated the auction-validity grievances as outside the scope of the revendication case because the proper remedy was a supervisory complaint, which had in fact already been filed.