Numbering system - Korea

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Document and kind codes

GONGGAE (A, U) - enlarge

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

GONGGO (B, Y) - enlarge

• examined patent publication (old law) (B)
• examined utility model publication (old law) (Y)

DEUNGNOK (B, Y) - enlarge

• granted patent publication (B)
• registered utility model publication (Y)

Number formats

application numbers:

yy-nnnnnn(n)

(between 1948 and 1993

• two digits for the year (y)
• six or seven digits for the serial number (n)

yyyy-nnnnnn(n)

(between 1994 and 1997)

• four digits for the year (y)
• six or seven digits for the serial number (n)

tt-yyyy-nnnnnnn

(from 1998 onwards)

• 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:

yy-nnnnnn(n)

(between 1983 and May 1998)

• two digits for the year (y)
• six or seven digits for the serial number (n)

yyyy-nnnnnn(n)

(between May 1998 and 2003)

• four digits for the year (y)
• six or seven digits for the serial number (n)

tt-yyyy-nnnnnnn

(from 2004 onwards)

• 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:

yy-nnnnnnn (between 1948 and October 1997, pre-grant opposition)

• two digits for the year (y)
• seven digits for the serial number (n)

nnnnnnn (between October 1997 and May 1999, post-grant opposition)

• seven digits for the serial number (n), no year

tt-nnnnnnn (from May 1999 onwards, electronic filing)

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

Summary of current formats

application number: tt-yyyy-nnnnnnn

publication number: tt-yyyy-nnnnnnn

grant number: tt-nnnnnnn

Type of right

10 patent
20 for utility model
30 design
40 trade mark