4.1.16.4 Refund of the fee for international preliminary examination 

4.1.064Where the international application or the demand for international preliminary examination is withdrawn before examination has started and within 30 months of the priority date, the fee for international preliminary examination is refunded in full. It is also refunded in full if the demand is deemed not to have been submitted or the fee was paid by mistake. Any amount paid in excess of the amount due is likewise refunded.