Sole applicants must have their residence in, or be a national of, a PCT contracting state bound by PCT Chapter II. If there are two or more applicants, at least one of them must meet these requirements. Secondly, the international application must have been filed with a receiving Office of or acting for a PCT contracting state bound by PCT Chapter II.
At 1 January 2018, all PCT contracting states were bound by Chapter II PCT and, therefore, these requirements do not stand in the way of any applicant wishing to file a demand for a pending international application.
Date retrieved: 30 December 2018
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XA.152 EPC The European Patent Office as an International Searching Authority or International Preliminary Examining Authority