In the communication under Rule 71(3), the applicant may be requested to pay claims fees due before grant of the European patent. If the applicant fails to pay the fee for all the claims in due time, the application is deemed to be withdrawn (Rule 71(7)).[Rule 71(4); ]
Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/a_x_7_3_2.htm
Date retrieved: 17 May 2021