JP Authority File

6 February 2025

The JP authority file provides a list of patent/utility model documents digitally issued since 1993, under the WIPO Standard ST.37. The JP authority file allows all interested parties to assess the completeness of the available patent/utility model documentation from the Japan Patent Office.
This file will be updated every half a year, and next update will be provided around August 2025.

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• JP Authority File (ZIP:46,317KB)

Date of production

2025-1-17

Data coverage

1993-01 to 2024-12

Definition

Data element

• (a) country code
• (b) publication number
• (c) kind code
• (d) publication date

Kind code

A

publication of patent application

A1

domestic re-publication of PCT international application *

B1, B2

publication of granted patent

U

publication of registered utility model

Y2

publication of registered utility model after examination

A5, B5, U5, Y5

amendment

A6, B6, U6, Y6

correction

A7, B7, U7, Y7

correction

Numbering format

XYYNNNNNN

Japanese era name symbol (S for Showa, H for Heisei) + two-digit Japanese calendar year + six-digit serial number

YYYYNNNNNN

four-digit Christian year + six-digit serial number

NNNNNNN

seven-digit serial number

WOYYNNNNNN **

WO + the last two digits of Christian year + six-digit serial number

WOYYYYNNNNNN **

WO + four-digit Christian year + six-digit serial number

WO0YYNNNNN **

WO + 0 + the last two digits of Christian year + five-digit serial number

• * This document is published besides international publication in case a PCT application filed in Japanese enters the national phase in Japan.
• ** These numbering formats are applied for domestic re-publication of PCT international application in the JP authority file.

External link

• WIPO Standard ST.37 (PDF)  ( External link )
• WIPO Authority File Portal ( External link )
• IP5 Authority Files ( External link )

[Last updated 6 February 2025]