# Patent number search format SureChEMBL identifies all patents using a unique identifier called a **SureChEMBL Patent Number** (**SCPN**). This is a unique document identifier used by SureChEMBL where hyphens are inserted after the country code and before the kind code i.e. CC-n-KK where CC is the 2-digit country code, n is the patent number and KK is the 1- or 2-digit kind code. An **SCPN** always includes a kind code and looks like this: WO-2012088469-A1. To mitigate the need to manually convert input patent numbers into the correct **SCPN** format, SureChEMBL has implemented some level of patent number normalisation to handle a variety of different patent number search formats from issuing patent authorities and vendors. You may enter a patent number with or without a kind code, with or without hyphens. If you enter a patent number without using a kind code, the system will retrieve all matching **SCPN**s for the input patent number (i.e. it will retrieve EP-0555555-A2, EP-0555555-A3 and EP-0555555-B1 for the input EP0555555). Table 1 below details SureChEMBL Patent Number search formats for US, EP, WO and JP publication numbers. ***Note:*** Patent numbers containing “,” (comma) cannot be resolved and it is suggested to remove the “,”. ***Note2:*** It is possible to retrieve several patents simultaneously by entering their comma-separated patent numbers, e.g. WO-2002028208-A9, WO-2018140411-A2, WO-2018101793-A9 | Country/Authority | SureChEMBL Patent Number (SCPN) Search Format | | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **US Applications** |

US-YYYYn-KK, n = 7 digits with leading zeroes
US-20110098016-A1
US-20120101094-A1

| | **US Granted** |

US-n-KK, n = 1 to 7 digits
US-672513-A
US-7888976-B2

| | **EP Applications** |

EP-n-KK, n = 7 digits with leading zeroes
EP-0000001-A1
EP-2450353-A1

| | **EP Granted** |

EP-n-KK, n = 7 digits with leading zeroes
EP-0000001-B1
EP-1603883-B1

| | **WO** |

WO-YYYYn-KK, n = 6 digits with leading zeroes
WO-1978000001-A1
WO-2012047538-A1

| | **JP** |

Unexamined Applications (Kokai)
Examined Specifications up to 29.05.1996 (Kokoku)
Utility Models

Granted Patents after 29.05.1996 (Toroku):

| **Key** Y = Western Year\ E = Japanese Era\ n = Number\ K = Kind Code
Patent AuthoritiesPatent Number
Search Formats Handled		Input ExamplesMatching SCPNs
US ApplicationsUS-YYYYn-KK, n = 7 digits with leading zeroesUS-YYYYn-KK, n = 7 digits with leading zeroes
published from
2001		US YYYY/1234567 KKUS 2001/0000004 A1US-20010000004-A1
USYYYY1234567KKUS20010000004A1US-20010000004-A1
USYYYY1234567US20010000004US-20010000004-A1
US-YYYY1234567US-20010000004US-20010000004-A1
US--YYYY1234567US--20120237473US-20120237473-A1
USYYYY123456US2002077339US-20020077339-A1
USYYYY/nUS2002/55459US-20020055459-A1
US GrantsUS-n-K, n = 1 to 7 digitsUS-n-K, n = 1 to 7 digits
USnUS4not covered in SureChEMBL as published in 1836
USnUS3935517US-3935517-A
USnKUS8131527B1US-8131527-B1
US-n-KUS-8318735-B2US-8318735-B2
US-nUS-8334290US-8334290-B2
US--nUS--5047527US-5047527-A
US nUS 8335725US-8335725-B2
EP-A and EP-BEP-1234567-KKEP-1234567-KK
EP 0 123 456 KKEP 0 555 555 A2EP-0555555-A2
EP0123456KKEP02450353A1EP-2450353-A1
EP01234567EP2221376EP-2221376-A2
EP-2221376-A3
EP-2221376-B1
EP-01234567EP-2535332EP-2535332-A1
EP-01234567-KKEP-2535332-A1EP-2535332-A1
EPnEP4EP-0000004-A1
EP-0000004-B1
EP nEP 20014EP-0020014-A2
EP-0020014-A3
EP-0020014-B1
EP--1234567-KKEP--0389359-A1EP-0389359-A1
WOWO-YYYYn-KK, n = 7 digits with leading zeroesWO-YYYYn-KK, n = 7 digits with leading zeroes
From 1978 to
30/06/2002		WO YY/12345WO 93/12096WO-1993012096-A1
From 01/07/2002
to 31/12/2003		WO YY/123456WO 02/055459WO-2002055459-A2
WO-2002055459-A3
From 01/01/2004WO YYYY/123456WO 2012/123823WO-2012123823-A1
WOYYYY123456KKWO2012161965A1WO-2012161965-A1
WOYYYY123456WO2012161965WO-2012161965-A1
WO-YYYY123456WO-2012161965WO-2012161965-A1
WO-YYYY123456-KKWO-2012161965-A1WO-2012161965-A1
WO--YYYY123456WO--2012123823WO-2012123823-A1
WO YYYY123456WO 2006002283WO-2006002283-A1
WO-2006002283-A9
WOYYYY/nWO2002/57483WO-2002057483-A2
WO-2002057483-A3
WOYY123456-KKWO02055459-A2WO-2002055459-A2
WOYY12345WO9312096WO-1993012096-A1
Japio Abstracts - Unexamined Applications (Kokai) from 1976
Prior to 2000JP-EEn-K where n = 1 to 6 digitsJP-EEn-K where n = 1 to 6 digits
JPEE- nJP63- 27431JP-63027431-A
JPEE -nJP63 -1JP-63000001-A
JP-EEn-KJP-6327431JP-63027431-A
JPEE012345JP63000001JP-63000001-A
JPYYYY012345JP1988000001JP-63000001-A
JP YYYY012345JP 1998001467JP-10001467-A
JP YYYY012345JP 1999343240JP-11343240-A
The leading 0 in Emperor Years 01 to 09 is omitted
JP-En-K where n = 1 to 6 digitsJP-En-K where n = 1 to 6 digits
JPE-nJP1-216933JP-1216933-A
JPE-nJP4-5288JP-4005288-A
JP-E012345-KJP-4005288-AJP-4005288-A
JPYYYY012345JP1989019019JP-1019019-A
JP-YYYY012345JP-1989079155JP-1079155-A
JP YYYY012345JP 1990073084JP-2073084-A
JPYYYY012345JP1991020222JP-3020222-A
JPYYYY012346JP1992159261JP-4159261-A
JPYYYY012347JP1993201991JP-5201991-A
JPYYYY012348JP1994199831JP-6199831-A/td>
JPYYYY012349JP1995010875JP-7010875-A
JPYYYY012350JP1996277271JP-8277271-A
JPYYYY012351JP1997509407JP-9509407-A
JPYYYY012352JP1989001166JP-64001166-A
JPYYYY012353JP1989003702JP-1003702-A
After 2000JP-YYYYn-K where n = 1 to 6 digitsJP-YYYYn-K where n = 1 to 6 digits
JP-YYYYn-KJP-200696749-AJP-2006096749-A
JPYYYY-nJP2006-96749JP-2006096749-A
JP--YYYY-012345JP--2012519652JP-2012519652-A
JP YYYY012345JP 2008094740JP-2008094740-A