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WIPO Journal - World Intellectual Property Organization

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Before the Reform of the PCT in view of the PLT (April 2007), PCT art.14(2) found its implementation<br />

in PCT r.26.6. Although PCT art.14(2) and r.26 belong to the “formalities examination” by the receiving<br />

office, the consequence of the late furnishing of drawings was (always) that the international filing date,<br />

already accorded pursuant PCT art.11(1), was re-dated to the date on which the missing drawings were<br />

received by the receiving office.<br />

As a result of aligning the PCT with the PLT, the requirement of the late filing of drawings was<br />

incorporated into PCT r.20 implementing PCT art.11 (“international filing date”) while abolishing PCT<br />

r.26.6. 60 At the same time, the scope of PCT r.20 was broadened, allowing the applicant to file not only<br />

missing drawings but also missing parts of the description and/or missing parts of the claims (see section<br />

“Missing part of the claims—PCT rule 20.5” below), as well as providing for the case when all of the<br />

description and/or all of the claims are missing (see section “Missing entire description of missing entire<br />

set of claims—PCT rule 20.6” below).<br />

Missing parts of the description or missing drawings can be filed by the applicant upon invitation when<br />

the receiving office finds that parts of the description and/or drawings are, or appear to be, missing. PCT<br />

r.20.5(a) deals with the case that the receiving office finds that a “missing part” is missing or appears to<br />

be missing. The time-limit for furnishing such missing parts is two months from the date of the invitation<br />

(PCT r.20.7(a)(i)).<br />

The filing of “missing parts” can also be done by the applicant of his own volition. This own volition<br />

is hidden in the wording “or otherwise” in PCT r.20.5(b), in the sentence: “Where, following an invitation<br />

under paragraph (a) or otherwise, the applicant furnishes to the receiving Office …” (emphasis added).<br />

If the applicant notices and wishes to correct the defect on his own initiative, this is permitted within a<br />

time-limit of two months from the date on which papers were first received by the receiving office (PCT<br />

r.20.7(a)(ii)). The time-limits in PCT r.20.7(a)(i) and (ii) were fixed at two months in alignment with the<br />

minimum duration of such time-limits under the PLT. 61<br />

Filing missing parts—re-dating the international application<br />

The filing of missing parts of the description or missing drawings normally results in a re-dating of the<br />

international filing date. If the applicant furnishes to the receiving office the required correction under<br />

PCT art.11(2) on a date after the date of receipt of the purported international application (but falling<br />

within the applicable time-limit under PCT r.20.7), the receiving office will accord that later date as the<br />

international filing date (cf. PCT r.20.3(b)(i) and r.20.5(c)).<br />

Where the international filing date has been corrected in the above sense, the applicant may realise that<br />

his re-dated international application no longer lies within the period for claiming priority from an earlier<br />

(national) application and he might want to undo the filing of the missing parts retroactively. In that case,<br />

the applicant may request the receiving office to disregard the missing part in order to establish that the<br />

initial filing date 62 becomes the international filing date and, hence, to retain the priority claim (PCT<br />

r.20.5(e)). This notice of withdrawal has to be sent to the receiving office within one month from the date<br />

of mailing of the later submitted parts (PCT r.20.5(e)).<br />

60<br />

The abolition of PCT r.26.6 has diminished the effectiveness of PCT art.14(2) because all issues relating to late-filed drawings are now covered<br />

in PCT r.20 implementing PCT art.11(2).<br />

61<br />

“Report — Missing Elements and Parts of the International Application” (adopted by the Working Group), Document PCT/R/WG/7/13, 2005,<br />

Item 24, at http://www.wipo.int/meetings/en/details.jsp?meeting_id=7129 [Accessed March 29, 2011].<br />

62<br />

In this article the wording the “initial filing date” is used to indicate the date on which one or more elements referred to in PCT art.11(1)(iii) were<br />

first received by the receiving office.<br />

Filing date requirements under the Patent Cooperation Treaty 185<br />

(2011) 2 W.I.P.O.J., Issue 2 © 2011 Thomson Reuters (Professional) UK Limited

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