World Intellectual Property Organization

Administrative Instructions under the Patent Cooperation Treaty

Section 110
Dates

Any date in the international application, or used in any correspondence emanating from International Authorities relating to the international application, shall be indicated by the Arabic number of the day, by the name of the month, and by the Arabic number of the year. The receiving Office, where the applicant has not done so, or the International Bureau, where the applicant has not done so and the receiving Office fails to do so, shall, after, above, or below any date indicated by the applicant in the request, repeat the date, in parentheses, by indicating it by two-digit Arabic numerals each for the number of the day and for the number of the month followed by the number of the year in four digits, in that order and with a period, slant or hyphen after the digit pairs of the day and of the month (for example, "20 March 2004 (20.03.2004)," "20 March 2004 (20/03/2004)," or "20 March 2004 (20-03-2004)").

Explore WIPO