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Guide for applicants, Part 2: PCT procedure before the EPO (Euro-PCT Guide)

 
 
Who may file an international application with the EPO?
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An international application may at the applicant's option be filed:
WIPO PCT Guide 5.008-5.009 
with the national office of the PCT contracting state of which the applicant is a resident or national, or with the office acting for that state, or 
with the IB as receiving Office. 
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A third option exists for natural and legal persons who are nationals or residents of an EPC contracting state, since they may also file international applications with the EPO acting as a receiving Office. In such cases it is sufficient that at least one applicant is a national or resident of an EPC contracting state, regardless of whether he is for example mentioned in Box II of the PCT Request as applicant for the designation of the US only and, as the case may be, also as inventor. A person mentioned only as inventor does not qualify as an applicant.
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If there are two or more applicants, it is sufficient for at least one of the applicants to satisfy these requirements. For instance, if a national or resident of an EPC contracting state is mentioned in the PCT request form as inventor and applicant for the purposes of the United States only, the international application may be filed with the EPO as receiving Office regardless of the residence and nationality of the other applicant(s).
WIPO PCT Guide 5.022 
PCT Newsletter 5/2012, 8 
Section 203 AI 
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When the EPO acts as receiving Office, the EPO will process the application in accordance with the relevant provisions of the PCT, including the PCT Receiving Office Guidelines (GL/RO) and the Administrative Instructions under the PCT (AI) (see points 11 ff).