CPC scheme and CPC definitions

This page is regularly updated. Please check the following page for the latest release notes.

Only the CPC scheme and definitions published on this page are the official versions. The scheme and definitions are only published in English language. The USPTO and EPO cannot be held responsible for the content of translated versions that could be made available by third parties.

CPC scheme and CPC definitions

≡ next to the scheme gives access to the corresponding interleaved version (more information here).

ABCDEFGHY
SchemeDef.SchemeDef.SchemeDef.SchemeDef.SchemeDef.SchemeDef.SchemeDef.SchemeDef.Scheme
A
A01B
A01C
A01D
A01F
A01G
A01H
A01J
A01K
A01L
A01M
A01N
A21B
A21C
A21D
A22B
A22C
A23B
A23C
A23D
A23F
A23G
A23J
A23K
A23L
A23N
A23P
A23V
A23Y
A24B
A24C
A24D
A24F
A41B
A41C
A41D
A41F
A41G
A41H
A42B
A42C
A43B
A43C
A43D
A44B
A44C
A44D
A45B
A45C
A45D
A45F
A46B
A46D
A47B
A47C
A47D
A47F
A47G
A47H
A47J
A47K
A47L
A61B
A61C
A61D
A61F
A61G
A61H
A61J
A61K
A61L
A61M
A61N
A61Q
A62B
A62C
A62D
A63B
A63C
A63D
A63F
A63G
A63H
A63J
A63K
A
A01B
A01C
A01D
A01F
A01G
A01H
A01J
A01K
A01L
A01M
A01N
A21B
A21C
A21D
A22B
A22C
A23B
A23C
A23D
A23F
A23G
A23J
A23K
A23L
A23N
A23P
A23V
A23Y
A24B
A24C
A24D
A24F
A41B
A41C
A41D
A41F
A41G
A41H
A42B
A42C
A43B
A43C
A43D
A44B
A44C
A44D
A45B
A45C
A45D
A45F
A46B
A46D
A47B
A47C
A47D
A47F
A47G
A47H
A47J
A47K
A47L
A61B
A61C
A61D
A61F
A61G
A61H
A61J
A61K
A61L
A61M
A61N
A61Q
A62B
A62C
A62D
A63B
A63C
A63D
A63F
A63G
A63H
A63J
A63K
B
B01B
B01D
B01F
B01J
B01L
B02B
B02C
B03B
B03C
B03D
B04B
B04C
B05B
B05C
B05D
B06B
B07B
B07C
B08B
B09B
B09C
B21B
B21C
B21D
B21F
B21G
B21H
B21J
B21K
B21L
B22C
B22D
B22F
B23B
B23C
B23D
B23F
B23G
B23H
B23K
B23P
B23Q
B24B
B24C
B24D
B25B
B25C
B25D
B25F
B25G
B25H
B25J
B26B
B26D
B26F
B27B
B27C
B27D
B27F
B27G
B27H
B27J
B27K
B27L
B27M
B27N
B28B
B28C
B28D
B29B
B29C
B29D
B29K
B29L
B30B
B31B
B31C
B31D
B31F
B32B
B41B
B41C
B41D
B41F
B41G
B41J
B41K
B41L
B41M
B41N
B41P
B42B
B42C
B42D
B42F
B42P
B43K
B43L
B43M
B44B
B44C
B44D
B44F
B60B
B60C
B60D
B60F
B60G
B60H
B60J
B60K
B60L
B60M
B60N
B60P
B60Q
B60R
B60S
B60T
B60V
B60W
B60Y
B61B
B61C
B61D
B61F
B61G
B61H
B61J
B61K
B61L
B62B
B62C
B62D
B62H
B62J
B62K
B62L
B62M
B63B
B63C
B63G
B63H
B63J
B64B
B64C
B64D
B64F
B64G
B65B
B65C
B65D
B65F
B65G
B65H
B66B
B66C
B66D
B66F
B67B
B67C
B67D
B68B
B68C
B68F
B68G
B81B
B81C
B82B
B82Y
B
B01B
B01D
B01F
B01J
B01L
B02B
B02C
B03B
B03C
B03D
B04B
B04C
B05B
B05C
B05D
B06B
B07B
B07C
B08B
B09B
B09C
B21B
B21C
B21D
B21F
B21G
B21H
B21J
B21K
B21L
B22C
B22D
B22F
B23B
B23C
B23D
B23F
B23G
B23H
B23K
B23P
B23Q
B24B
B24C
B24D
B25B
B25C
B25D
B25F
B25G
B25H
B25J
B26B
B26D
B26F
B27B
B27C
B27D
B27F
B27G
B27H
B27J
B27K
B27L
B27M
B27N
B28B
B28C
B28D
B29B
B29C
B29D
B29K
B29L
B30B
B31B
B31C
B31D
B31F
B32B
B41B
B41C
B41D
B41F
B41G
B41J
B41K
B41L
B41M
B41N
B41P
B42B
B42C
B42D
B42F
B42P
B43K
B43L
B43M
B44B
B44C
B44D
B44F
B60B
B60C
B60D
B60F
B60G
B60H
B60J
B60K
B60L
B60M
B60N
B60P
B60Q
B60R
B60S
B60T
B60V
B60W
B60Y
B61B
B61C
B61D
B61F
B61G
B61H
B61J
B61K
B61L
B62B
B62C
B62D
B62H
B62J
B62K
B62L
B62M
B63B
B63C
B63G
B63H
B63J
B64B
B64C
B64D
B64F
B64G
B65B
B65C
B65D
B65F
B65G
B65H
B66B
B66C
B66D
B66F
B67B
B67C
B67D
B68B
B68C
B68F
B68G
B81B
B81C
B82B
B82Y
C
C01B
C01C
C01D
C01F
C01G
C01P
C02F
C03B
C03C
C04B
C05B
C05C
C05D
C05F
C05G
C06B
C06C
C06D
C06F
C07B
C07C
C07D
C07F
C07G
C07H
C07J
C07K
C08B
C08C
C08F
C08G
C08H
C08J
C08K
C08L
C09B
C09C
C09D
C09F
C09G
C09H
C09J
C09K
C10B
C10C
C10F
C10G
C10H
C10J
C10K
C10L
C10M
C10N
C11B
C11C
C11D
C12C
C12F
C12G
C12H
C12J
C12L
C12M
C12N
C12P
C12Q
C12R
C12Y
C13B
C13K
C14B
C14C
C21B
C21C
C21D
C22B
C22C
C22F
C23C
C23D
C23F
C23G
C25B
C25C
C25D
C25F
C30B
C40B
C
C01B
C01C
C01D
C01F
C01G
C01P
C02F
C03B
C03C
C04B
C05B
C05C
C05D
C05F
C05G
C06B
C06C
C06D
C06F
C07B
C07C
C07D
C07F
C07G
C07H
C07J
C07K
C08B
C08C
C08F
C08G
C08H
C08J
C08K
C08L
C09B
C09C
C09D
C09F
C09G
C09H
C09J
C09K
C10B
C10C
C10F
C10G
C10H
C10J
C10K
C10L
C10M
C10N
C11B
C11C
C11D
C12C
C12F
C12G
C12H
C12J
C12L
C12M
C12N
C12P
C12Q
C12R
C12Y
C13B
C13K
C14B
C14C
C21B
C21C
C21D
C22B
C22C
C22F
C23C
C23D
C23F
C23G
C25B
C25C
C25D
C25F
C30B
C40B
D
D01B
D01C
D01D
D01F
D01G
D01H
D02G
D02H
D02J
D03C
D03D
D03J
D04B
D04C
D04D
D04G
D04H
D05B
D05C
D05D
D06B
D06C
D06F
D06G
D06H
D06J
D06L
D06M
D06N
D06P
D06Q
D07B
D10B
D21B
D21C
D21D
D21F
D21G
D21H
D21J
D
D01B
D01C
D01D
D01F
D01G
D01H
D02G
D02H
D02J
D03C
D03D
D03J
D04B
D04C
D04D
D04G
D04H
D05B
D05C
D05D
D06B
D06C
D06F
D06G
D06H
D06J
D06L
D06M
D06N
D06P
D06Q
D07B
D10B
D21B
D21C
D21D
D21F
D21G
D21H
D21J
E
E01B
E01C
E01D
E01F
E01H
E02B
E02C
E02D
E02F
E03B
E03C
E03D
E03F
E04B
E04C
E04D
E04F
E04G
E04H
E05B
E05C
E05D
E05F
E05G
E05Y
E06B
E06C
E21B
E21C
E21D
E21F
E
E01B
E01C
E01D
E01F
E01H
E02B
E02C
E02D
E02F
E03B
E03C
E03D
E03F
E04B
E04C
E04D
E04F
E04G
E04H
E05B
E05C
E05D
E05F
E05G
E05Y
E06B
E06C
E21B
E21C
E21D
E21F
F
F01B
F01C
F01D
F01K
F01L
F01M
F01N
F01P
F02B
F02C
F02D
F02F
F02G
F02K
F02M
F02N
F02P
F02W
F03B
F03C
F03D
F03G
F03H
F04B
F04C
F04D
F04F
F05B
F05C
F05D
F15B
F15C
F15D
F16B
F16C
F16D
F16F
F16G
F16H
F16J
F16K
F16L
F16M
F16N
F16P
F16S
F16T
F17B
F17C
F17D
F21H
F21K
F21L
F21S
F21V
F21W
F21Y
F22B
F22D
F22G
F23B
F23C
F23D
F23G
F23H
F23J
F23K
F23L
F23M
F23N
F23Q
F23R
F24B
F24C
F24D
F24F
F24H
F24J
F25B
F25C
F25D
F25J
F26B
F27B
F27D
F27M
F28B
F28C
F28D
F28F
F28G
F41A
F41B
F41C
F41F
F41G
F41H
F41J
F42B
F42C
F42D
F
F01B
F01C
F01D
F01K
F01L
F01M
F01N
F01P
F02B
F02C
F02D
F02F
F02G
F02K
F02M
F02N
F02P
F02W
F03B
F03C
F03D
F03G
F03H
F04B
F04C
F04D
F04F
F05B
F05C
F05D
F15B
F15C
F15D
F16B
F16C
F16D
F16F
F16G
F16H
F16J
F16K
F16L
F16M
F16N
F16P
F16S
F16T
F17B
F17C
F17D
F21H
F21K
F21L
F21S
F21V
F21W
F21Y
F22B
F22D
F22G
F23B
F23C
F23D
F23G
F23H
F23J
F23K
F23L
F23M
F23N
F23Q
F23R
F24B
F24C
F24D
F24F
F24H
F24J
F25B
F25C
F25D
F25J
F26B
F27B
F27D
F27M
F28B
F28C
F28D
F28F
F28G
F41A
F41B
F41C
F41F
F41G
F41H
F41J
F42B
F42C
F42D
G
G01B
G01C
G01D
G01F
G01G
G01H
G01J
G01K
G01L
G01M
G01N
G01P
G01Q
G01R
G01S
G01T
G01V
G01W
G02B
G02C
G02F
G03B
G03C
G03D
G03F
G03G
G03H
G04B
G04C
G04D
G04F
G04G
G04R
G05B
G05D
G05F
G05G
G06C
G06D
G06E
G06F
G06G
G06J
G06K
G06M
G06N
G06Q
G06T
G07B
G07C
G07D
G07F
G07G
G08B
G08C
G08G
G09B
G09C
G09D
G09F
G09G
G10B
G10C
G10D
G10F
G10G
G10H
G10K
G10L
G11B
G11C
G12B
G21B
G21C
G21D
G21F
G21G
G21H
G21J
G21K
G21Y
G
G01B
G01C
G01D
G01F
G01G
G01H
G01J
G01K
G01L
G01M
G01N
G01P
G01Q
G01R
G01S
G01T
G01V
G01W
G02B
G02C
G02F
G03B
G03C
G03D
G03F
G03G
G03H
G04B
G04C
G04D
G04F
G04G
G04R
G05B
G05D
G05F
G05G
G06C
G06D
G06E
G06F
G06G
G06J
G06K
G06M
G06N
G06Q
G06T
G07B
G07C
G07D
G07F
G07G
G08B
G08C
G08G
G09B
G09C
G09D
G09F
G09G
G10B
G10C
G10D
G10F
G10G
G10H
G10K
G10L
G11B
G11C
G12B
G21B
G21C
G21D
G21F
G21G
G21H
G21J
G21K
G21Y
H
H01B
H01C
H01F
H01G
H01H
H01J
H01K
H01L
H01M
H01P
H01Q
H01R
H01S
H01T
H02B
H02G
H02H
H02J
H02K
H02M
H02N
H02P
H02S
H03B
H03C
H03D
H03F
H03G
H03H
H03J
H03K
H03L
H03M
H04B
H04H
H04J
H04K
H04L
H04M
H04N
H04Q
H04R
H04S
H04T
H04W
H05B
H05C
H05F
H05G
H05H
H05K
H
H01B
H01C
H01F
H01G
H01H
H01J
H01K
H01L
H01M
H01P
H01Q
H01R
H01S
H01T
H02B
H02G
H02H
H02J
H02K
H02M
H02N
H02P
H02S
H03B
H03C
H03D
H03F
H03G
H03H
H03J
H03K
H03L
H03M
H04B
H04H
H04J
H04K
H04L
H04M
H04N
H04Q
H04R
H04S
H04T
H04W
H05B
H05C
H05F
H05G
H05H
H05K
Y
Y02B
Y02C
Y02E
Y02T
Y04S
Y10S