2479.1. If the insured has assigned or hypothecated his right to a premium overpayment refund to or in favour of the person who paid the premium and the insurer has received notice of the assignment or hypothec, the insurer is bound to make the overpayment refund to the assignee or to the holder of the hypothec.
The assignment or hypothec may not be set up against third persons until the insurer receives notice of the assignment or hypothec.
If two or more assignments or hypothecs are made or granted on the same right to a premium overpayment refund, priority is determined according to when the insurer received notice.