https://www.epo.org/en/searching-for-patents/helpful-resources/asian/korea/numbering

Numbering system - Korea

Document and kind codes

GONGGAE (A, U)

공개
  • unexamined patent publication (A)
  • unexamined utility model publication (U)

GONGGO (B1, Y1)

(publication before grant under pre-grant opposition system)

공고
  • examined patent publication (B1)
    (until September 1997)
  • examined utility model publication (Y1)
    (until September 1997)

DEUNGNOK (B1, Y1)

(publication after grant under post-grant opposition system)

등록
  • granted patent publication (B1)
    (since October 1997)
  • registered utility model publication (Y1)
    (since October 1997)

Number formats

application numbers:

tt-yyyy-nnnnnnn
  • two digits for the type of right (t)
  • four digits for the year (y)
  • seven digits for the serial number (n)

A-/U-publication numbers:

 tt-yyyy-nnnnnnn
  • two digits for the type of right (t)
  • four digits for the year (y)
  • seven digits for the serial number (n)

B-/Y-publication numbers:

 tt-nnnnnnn
  • two digits for the type of right (t)
  • seven digits for the serial number (n), no year

 

Type of right

10 patent
20 utility model
30 design
40 trade mark