Where too large a sum is paid to cover a fee, the excess shall not be refunded if the amount is insignificant and the party concerned has not expressly requested a refund. The President of the Office shall determine what constitutes an insignificant amount.
See decision of the President of the EPO dated 14.7.2007 implementing Article 12 RFees, Special edition No. 3, OJ EPO 2007, M.3.
Source: http://www.epo.org/law-practice/legal-texts/html/epc/2016/e/articl12.html
Date retrieved: 24 November 2017