Patent field codes

Patent documents are structured into well-defined sections, called patent fields. To narrow your patent search results, you can focus your query statement on specific patent fields.

Table of patent fields codes

The table displays the following columns:

Patent field code

Patent field name

Text field

Column included in patent list table

Can be selected from patent field list

Patent field type

AB

Abstract

Yes

 

Yes

Document section

AC

Assignee City

 

 

Yes

Name field

ACN

Assignee Country

 

 

Yes

Name field

AGT

Patent Agent

 

 

 

Name field

AIC

Additional IPC Classes

 

 

Yes

Patent class

AN

Application Number

Yes

Yes

Yes

 

AS

Assignee State

 

 

Yes

Name field

BR

Backward References

 

Yes

Yes

Patent references

BSM

Background Summary

Yes

 

Yes

Document section

CLME

Claims

Yes

 

Yes

Document section

CPR

Copyright

 

 

 

Document section

DA

Application Date

 

Yes

Yes

Date field

DA1

A1 Publication Date

 

Yes

 

Date field

DA2

A2 Publication Date

 

Yes

 

Date field

DA3

A3 Publication Date

 

Yes

 

Date field

DB1

D1 Publication Date

 

Yes

 

Date field

DB2

D2 Publication Date

 

Yes

 

Date field

DB3

D3 Publication Date

 

Yes

 

Date field

DP

Publication Date

 

Yes

Yes

Date field

DPB

Date of First Publication

 

Yes

 

Date field

DRD

Drawing Description

Yes

 

Yes

Document section

DS

Designated States

 

 

 

Document section

DTD

Detailed Description

Yes

 

Yes

Document section

ET

Title

Yes

Yes

Yes

Document section

EXA

Assistant Examiner

 

 

 

Name field

EXP

Primary Examiner

 

 

 

Name field

FR

Forward References

 

Yes

Yes

Patent references

GVT

 

 

 

 

Document section

IC

Inventor City

 

 

Yes

Name field

ICN

Inventor Country

 

 

Yes

Name field

IN

Inventor

 

Yes

Yes

Name field

IN1

Sole Inventor

 

Yes

Yes

Name field

IS

Inventor State

 

 

Yes

Name field

MC

IPC Class

 

Yes

Yes

Patent class

MUC

Main US Class

 

Yes

Yes

Patent class

NCIT

Nonpatent References

Yes

 

Yes

Patent references

PA

Assignee

 

Yes

Yes

Name field

PA1

Sole Assignee

 

Yes

Yes

Name field

PAP

Previous Applicant (EP, PCT, JP) or Assignee (US)

 

 

Yes

Name field

PCIT

Patent References

 

 

 

Patent references

PCN

PCT Application Number

Yes

 

Yes

 

PCND

PCT Application Date

 

 

Yes

Date field

PCP

PCT Publication Number

Yes

 

Yes

 

PCPD

PCT Publication Date

 

 

Yes

Date field

PN

Publication Number

Yes

Yes

Yes

 

PR

Priority

 

Yes

Yes

Priority data field

UC

Additional US Classes

 

 

Yes

Patent class