The priority claim may also be withdrawn (see F‑VI, 3.5). If this is done before the technical preparations for publication of the application are completed, the publication will be deferred until eighteen months after the date of filing of the European application or, where multiple priorities are claimed, the earliest priority date remaining (see A‑VI, 1.1, and A‑III, 6.3).
Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/e_viii_8_2.htm
Date retrieved: 17 May 2021