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Numbering system - Japan2006-11-08 17:42:492021-05-07
Document types and kind codes
| KOKAI (A, U) |
公開
|
- unexamined patent publication (A)
- unexamined utility model publication (U)
|
| KOKOKU (B, Y) |
公告 |
- examined patent publication (old law) (B)
- examined utility model publication (old law) (Y)
|
| TOROKU (B, U) |
登録 |
- granted patent publication (new law) (B)
- granted utility model publication (new law) (U)
|
| KOHYO (A, T) |
再発表
|
- PCT application entering national phase in Japan (A, T)
|
| SAIKOHYO (A) |
発表 |
- Japanese PCT application entering national phase in Japan (A)
|
Number formats
yy-nnnnnn
|
- two digits for the year (y)
- up to six digits for the number (n)
- application number, unexamined publication number, examined publication number (old law)
- from 2000 onwards: four-digit Western year (yyyy-nnnnnn)
|
| nnnnnnn |
- seven digit number (n), no year
- grant numbers
|
Japanese number formats (Patents)
OLD LAW:
- application
yy-123456
- unexamined publication
yy-123456
- examined publication
yy-123456
- registration (no publication)
no. > 1 000 000
NEW LAW (1996):
- application
yy-123456
- unexamined publication
yy-123456
- granted patent (publication)
no. > 2 500 000
first publication: 29 May 1996
document no.: 2 500 001
NOTE:
from 2000 onwards the four-digit Western year is used instead of the Japanese imperial year
Japanese number formats (Utility Models)
OLD LAW:
- application
yy-123456
- unexamined publication
yy-123456
- examined publication
yy-123456
- registration (no publication)
1~approx 2 000 000
NEW LAW (1994):
- application
yy-123456
- granted utility model publication (without examination)
no. > 3 000 000
first publication: 26 July 1994
document no. 3 000 001
Japanese imperial years vs. Western years
| SHOWA (SHO, S) |
昭和 |
- reign of Emperor Hirohito
- 1926 to 1989
|
| HEISEI (HEI, H) |
平成 |
- reign of Emperor Akihito
- 1989 to date
|
| REIWA (REI, R) |
令和
|
- reign of Emperor Naruhito
- 1 May 2019 to date
|
SHOWA + 25 = Western year
HEISEI + 1988 = Western year
REIWA + 2018 = Western year
NOTE:
1) The last year SHOWA is the first year HEISEI (SHOWA 64 = HEISEI 01 = 1989).
2) The western year 2019 is until 30 April HEISEI 31, and starting from 1 May REIWA 1
