Kernrechtsfrage
Whether the debtor could invoke abuse of rights against the request for definitive legal opening due to the creditor's long delay in claiming indexed alimony arrears.
Extrahierter Entscheid
The abuse-of-rights objection was not established; mere delay and later assertion of claims did not amount to manifest abuse in these circumstances.
Extrahierte Begründung
The court stressed the narrow scope of defenses in definitive legal opening and the need for strict proof. The creditor's earlier inaction could be explained by oversight; no special reliance interest or serious detriment to the debtor was shown, and the debtor had always had to expect the fixed alimony obligation.