Date Range*

  * Entering date parameters in the box will override the 'date range' buttons.
Coverage Details: Coverage details for the patent database can be found here.
Note that most fields support Phrase (ABST/"cardboard box"), Proximity (ABST/"cardboard box"~5), Wildcard (ABST/card*), and Leading Wildcard (ABST/*ectomy) queries. Some fields support range queries and math operations. Only basic examples are provided below. See the syntax guide for advanced syntax details.
Field Abbr. Field Name Type Syntax Example and Comments
AADR Assignee Address
(complete string)
Text AADR/California
AADR/"Route 66"
ABST Abstract Text ABST/widget
ABST/"titanium steel"
AC Assignee City Text AC/Paris
AC/"New York"
ACLM Claims Text ACLM/"cardboard box"
ACN Assignee Country Text ACN/JP or ACN/US
AGT Agent Text AGT/"Bacon & Thomas"
AGTC Agent Address City Text AGTC/Paris
AGTCN Agent Country Text AGTCN/JP
AGTN Agent Name Text AGTN/smith
AN Assignee Name Text AN/smith
APD Filing Date Date Single Date: APD/1/5/2012
Range: APD/1/1/1790->12/31/2001
APN Application Number Text APN/123456
AS Assignee State Text AS/NY
ASEX Assistant Examiner Name Text ASEX/jones
CCL US Class Text CCL/100/50
DN Document Number
(same as PN)
Number DN/6954235
ECLA ECLA Classification Text ECLA/G08B25/10
FOS Field of Search Text FOS/714/100
FREF Foreign Patent Reference
(entire string)
Text FREF/titanium
FREFN Foreign Patent Reference
(number only)
Number FREF/EP0628292
IADR Inventor Address
(entire string)
Text IADR/"main street"
IC Inventor City Text IC/Munich
ICN Inventor Country Text ICN/GB
IN Inventor Name Text IN/smith
IPC IPC Classification Text IPC/A63F13/00
IPCR IPC Revised Text IPCR/A63F13/00
IS Inventor State (U.S.) Text IS/ca
ISD Publication Date Date Single Date: ISD/1/5/2012
Range: ISD/1/1/1790->12/31/2001
KCOD Kind Code Text KCOD/b1
OREF Other References Text OREF/titanium
PARN Parent Case Text PARN/704,848
PARN/"application Ser. No. 704,848"
PCCL Primary Class Text PCCL/702/100
PD Publication Date Date PD/12/08/2009
PEX Primary Examiner Name Text PEX/smith
PN Patent Number
(same as DN)
Number PN/6954235
PRICN Priority Country Text PRICN/FR
PRIN Priority Number Number PRIN/83711
PRIR Foreign Priority Text PRIR/9/16/1990
PT Document Type Text PT/PP

Possible values:
U (Utility)
RE (Reissue)
D (Design)
PP (Plant Patent)
REF US Patent Reference
(entire string)
Text REF/aluminum
REFN US Patent Reference
(number only)
Number REFN/6000000
SPEC Specification
(a.k.a. Description)
Text SPEC/aluminum
TTL Title Text TTL/aluminum
Additional fields are available via our API for commercial use. Please inquire if you would like access to these, and other, fields: Assignee Count, Claim Count, Expiration Date (with term extensions), Family Member Count, Image Count, Inventor Count, Priorities Count, Reference Count, Word Count, Assignment Count.
Number Fields Document Number (e.g. 6123456 | EP1659867) coverage details Application Number (e.g. 229911 | EP20000945211)
Common Fields All (e.g. Metal) Title (e.g. "metal detector") Abstract (e.g. television) Claim(s) (e.g. system) Description/Specification (e.g. "hand-held telephone")
Date Fields Filing Date to (mm/dd/yyyy) Publication Date to (mm/dd/yyyy) Foreign Priority (e.g. 07/25/2002)
Classification Current US Classification (e.g. 100/50) International Classification (e.g. G06F019/00)
Inventor Fields Inventor (e.g. Jones Mark) Inventor Country (e.g. JP)      country codes Inventor State (e.g. NY)     US state codes Inventor City (e.g. New York)
Assignee Fields Assignee (e.g. Sanyo) Assignee Country (e.g. JP)      country codes Assignee State (e.g. NY)     US state codes Assignee City (e.g. New York)
References Domestic References (e.g. 5796187) Foreign References (e.g. JP02292118) Other References (e.g. patent law)
Legal/Prosecution Information Parent Case Information (e.g. 10/007,521) Primary Examiner (e.g. Jones David) Assistant Examiner (e.g. Mathew Fenn) Attorney or Agent (e.g. Bacon & Thomas)

Date Range* All years Last 20 years
Word Stemming On Off
Sort Order Chronological Relevancy
  * Entering date parameters in the box will override the 'date range' buttons.