Question juridique clé
Whether the debtor could invoke good-faith discharge under Art. 167 CO despite prior notice of the assignment.
Solution extraite
Yes. Because the original creditor's conduct after notice of the assignment created justified good-faith belief that no assignment existed, payment/settlement with him was opposable to the assignee.
Motifs extraits
The assignee's lawyer acted inconsistently by both notifying the debtor of an assignment and continuing enforcement in the assignor's name, confusing the debtor. Good faith is presumed, and the debtor could rely on the apparent authority of the original creditor.