The fee for grant and publishing falls due on notification of the communication under Rule 71(3) requesting that this fee be paid. Under Rule 71(4), the same applies for claims fees, unless they were already paid under Rule 45(1) and Rule 45(2) or Rule 162(1) and Rule 162(2).
Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/a_x_5_2_3.htm
Date retrieved: 17 May 2021