(1) If the seller of a movable thing has retained title until payment of the purchase price, then in case of doubt it is to be assumed that ownership is transferred subject to the condition precedent that the purchase price is paid in full (retention of title).
(2) As a consequence of the retention of title, the seller may demand the return of the thing only if they have rescinded the agreement.
(3) An agreement on retention of title is void to the extent that the devolution of ownership is made subject to the satisfaction by the buyer of third-party claims, in particular those of an enterprise associated with the seller.