The international filing date of an international application is the date on which it is received at one of the EPO's filing offices, or at a national authority in an EPC contracting state (see GL/PCT‑EPO A‑II, 3.2), provided that the following minimum requirements are fulfilled at the time of receipt:[Art. 11; ]
If these requirements have been fulfilled, the purported international application will be accorded its actual date of receipt as the international filing date; the applicant will be notified accordingly (Form PCT/RO/105).
Source: http://www.epo.org/law-practice/legal-texts/html/guidelinespct/e/a_ii_4_1.htm
Date retrieved: 17 May 2021