According to the relevant resolutions of the World Intellectual Property Organization (WIPO), as of July 1, 2022, the WIPO Standard ST.26 "Recommended Standard for the Presentation of Nucleotide and Amino Acid Sequence Listings using XML (eXtensible Markup Language)" shall apply to any patent application with nucleotide or amino acid sequence listings in electronic file. In order to implement the Standard, relevant matters are hereby announced as follows:

I. For national patent applications and PCT international applications filed to CNIPA as of July 1, 2022, if the patent application documents contain sequence listings, the electronic file of the sequence listings shall comply with the requirements of WIPO Standard ST.26.

Further information regarding WIPO Standard ST.26 is available on the WIPO website: https://www.wipo.int.

II. For national patent applications and PCT international applications filed prior to July 1, 2022, the applicant shall still submit the sequence listings in accordance with the Standard for the Presentation of Nucleotide and/or Amino Acid Sequence Listing and Its Electronic File (No. 15 Order of CNIPA) and the Revision of Part of Feature Keyword Table in the Standard of the Intellectual Property Industry (Electronic File Standard) (No. 248 Announcement of CNIPA).

III. When the patent applicant submits the national patent application in the electronic form with the electronic file of the sequence listing under WIPO Standard ST.26, the applicant shall also file a sequence listing in the PDF format for calculation of the additional cost of the Description.

(Source: CNIPA website)