Questão jurídica principal
Whether the customer silently approved the bank’s purchase of Z. shares and thereby lost damage claims based on an alleged breach of mandate.
Decisão extraída
Yes. Under the applicable account terms and the customer’s delayed reaction after learning of the investment and its total loss, the purchase was deemed approved; any mistake was not invoked in time under Art. 31 OR.
Fundamentação extraída
The bank’s account terms allowed objections to bank actions within one month. This covered investment transactions under a discretionary mandate as well. The customer learned of the contractual breach at the latest when the complete loss became apparent, but did not object within one year, so he could not rely on a vitiated approval.