DOCUMENT TYPES AND KIND CODES
GONGKAI (A) - enlarge
- unexamined patent publication (>2003)
GONGGAO HEZHUN - enlarge
- examined patent publication (<2004)
-
examined utility model publication (<2004)
GONGGAO FAZHENG (B/U) - enlarge
-
granted patent publication (>2004)
-
registered utility model publication (>2004)
NUMBER FORMATS
(y)yy t nnnnn application numbers
-
two digits for the Republican year* (y)
-
one digit for the type of right (t)
-
five digits for the serial number (n)
* Conversion rule for Republican years:
Republican year + 1911 = Western year (example: Republican year 98 = 2009)
Note: from 2011 (= Republican year 100) onwards, the year part in the application numbers will comprise three digits.
yyyy nnnnn unexamined publication numbers
-
four digits for the Western year (y)
-
five digits for the serial number (n)
nnnnnn examined publication numbers
-
six digits for the serial number (n)
t nnnnnn grant numbers
-
one digit for the type of right (t)
-
six digits for the serial number (n)
Types of patent right (t)
application numbers:
1 - invention patent
2 - utility model
3 - design
grant numbers:
I - invention patent
M - utility model
D - design
