Since the completion of the search for conflicting applications that are not published at the time of the initial search is entrusted to the examining divisions, the documents which can be cited in the search report do not include unpublished patent applications (see B‑VI, 4.1).
Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/b_ix_2_2.htm
Date retrieved: 17 May 2021