(1)

(a) Subject to the provisions of subparagraph (b), the International Bureau and the International Searching Authorities shall not allow access by any person or authority to the international application before the international publication of that application, unless requested or authorized by the applicant.
(b) The provisions of subparagraph (a) shall not apply to any transmittal to the competent International Searching Authority, to transmittals provided for under Article 13, and to communications provided for under Article 20.

(2)

(a) No national Office shall allow access to the international application by third parties unless requested or authorized by the applicant, before the earliest of the following dates:

(i) date of the international publication of the international application,
(ii) date of receipt of the communication of the international application under Article 20,
(iii) date of receipt of a copy of the international application under Article 22.

(b) The provisions of subparagraph (a) shall not prevent any national Office from informing third parties that it has been designated, or from publishing that fact. Such information or publication may, however, contain only the following data: identification of the receiving Office, name of the applicant, international filing date, international application number, and title of the invention.
(c) The provisions of subparagraph (a) shall not prevent any designated Office from allowing access to the international application for the purposes of the judicial authorities.

(3) The provisions of paragraph (2)(a) shall apply to any receiving Office except as so far as transmittals provided for under Article 12(1) are concerned.
(4) For the purposes of this Article, the term “access” covers any means by which third parties may acquire cognizance, including individual communication and general publication, provided, however, that no national Office shall generally publish an international application or its translation before the international publication or, if international publication has not taken place by the expiration of 20 months from the priority date, before the expiration of 20 months from the said priority date.

(1) Neither the International Bureau nor the International Preliminary Examining Authority shall, unless requested or authorized by the applicant, allow access within the meaning, and with the proviso, of Article 30(4) to the file of the international preliminary examination by any person or authority at any time, except by the elected Offices once the international preliminary examination report has been established.
(2) Subject to the provisions of paragraph (1) and Articles 36(1) and (3) and 37(3)(b), neither the International Bureau nor the International Preliminary Examining Authority shall, unless requested or authorized by the applicant, give information on the issuance or non-issuance of an international preliminary examination report and on the withdrawal or non-withdrawal of the demand or of any election.

(g) International applications.

(1) Copies of international application files for international applications which designate the U.S. and which have been published in accordance with PCT Article 21(2), or copies of a document in such application files, will be furnished in accordance with PCT Articles 30 and 38 and PCT Rules 94.2 and 94.3, upon written request including a showing that the publication of the application has occurred and that the U.S. was designated, and upon payment of the appropriate fee (see § 1.19(b)), if:

(i) With respect to the Home Copy (the copy of the international application kept by the Office in its capacity as the Receiving Office, see PCT Article 12(1)), the international application was filed with the U.S. Receiving Office;
(ii) With respect to the Search Copy (the copy of an international application kept by the Office in its capacity as the International Searching Authority, see PCT Article 12(1)), the U.S. acted as the International Searching Authority, except for the written opinion of the International Searching Authority which shall not be available until the expiration of thirty months from the priority date; or
(iii) With respect to the Examination Copy (the copy of an international application kept by the Office in its capacity as the International Preliminary Examining Authority), the United States acted as the International Preliminary Examining Authority, an International Preliminary Examination Report has issued, and the United States was elected.

(2) A copy of an English language translation of a publication of an international application which has been filed in the United States Patent and Trademark Office pursuant to 35 U.S.C. 154(d)(4) will be furnished upon written request including a showing that the publication of the application in accordance with PCT Article 21(2) has occurred and that the U.S. was designated, and upon payment of the appropriate fee (§ 1.19(b)(4)).
(3) Access to international application files for international applications which designate the U.S. and which have been published in accordance with PCT Article 21(2), or copies of a document in such application files, will be permitted in accordance with PCT Articles 30 and 38 and PCT Rules 44 ter .1, 94.2 and 94.3, upon written request including a showing that the publication of the application has occurred and that the U.S. was designated.
(4) In accordance with PCT Article 30, copies of an international application-as-filed under paragraph (a) of this section will not be provided prior to the international publication of the application pursuant to PCT Article 21(2).
(5) Access to international application files under paragraphs (a)(1)(i) through (a)(1)(vi) and (g)(3) of this section will not be permitted with respect to the Examination Copy in accordance with PCT Article 38.