MPEP 1834.01
Filing of Correspondence by Facsimile

Ninth Edition of the MPEP, Revision 10.2019, Last Revised in June 2020

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1834.01    Filing of Correspondence by Facsimile [R-07.2015]

PCT Rule 92.4 provides that a national Office may receive documents by telegraph, teleprinter, or facsimile machine. However, the United States Patent and Trademark Office has not informed the International Bureau that it accepts such submissions other than facsimile transmissions. Accordingly, applicants may not currently file papers in international applications with the United States Patent and Trademark Office via telegraph or teleprinter.

Generally, any paper may be filed by facsimile transmission with certain exceptions which are identified in 37 CFR 1.6(d). It should be noted that a facsimile transmission of a document is not permitted and, if submitted, will not be accorded a date of receipt if the document is:

  • (A) Required by statute to be certified;
  • (B) A color drawing submitted under 37 CFR 1.437;
  • (C) An international application for patent; or
  • (D) A copy of the international application and the basic national fee necessary to enter the national stage, as specified in 37 CFR 1.495(b).

Facsimile transmission may be used to submit substitute sheets (other than color drawings), extensions of time, power of attorney, fee authorizations (other than the basic national fee), demands, response to written opinions, oaths or declarations, petitions, Article 34 amendments, and translations in international applications.

A Certificate of Transmission may be used as provided in 37 CFR 1.8(a)(1) except in the instances specifically excluded in 37 CFR 1.8(a)(2). Note particularly that the Certificate of Transmission cannot be used for the filing of an international application for patent or correspondence in an international application before the U.S. Receiving Office, the U.S. International Searching Authority, or the U.S. International Preliminary Examining Authority. Guidelines for facsimile transmission are clearly set forth in 37 CFR 1.6(d) and should be read before transmitting by facsimile machine.

A signature on a document received via facsimile in a permitted situation is acceptable as a proper signature. See PCT Rule 92.4(b) and 37 CFR 1.4(d)(1)(ii).

The receipt date of a document transmitted via facsimile is the date in the USPTO on which the transmission is completed, unless the receipt date is a Saturday, Sunday, or Federal holiday in which case the date of receipt will be the next succeeding day which is not a Saturday, Sunday, or Federal holiday (37 CFR 1.6(a)(3) ). See 37 CFR 1.6(d). Where a document is illegible or part of the document is not received, the document will be treated as not received to the extent that it is illegible or the transmission failed. See PCT Rule 92.4(c).