Publication and application number formats

This table contains the publication and application number formats used in patentGate.

PatentNumber formate

Publication numbers

Country	Number format	Description	Valid (years)	Example
DE	YYnnnnn	two digit year minus 50 + 5 digit number	to 1994	DE 4101234
DE	YYnnnnn	two digit year + 5 digit number	Utility model to 1994	DE 9301234
DE	[1-6]YYnnnnn	Prefix 1 (Patent), 2 (Utility model), 5/6 (Translation) + two digit year + 5 digit number	1995 to 2003	DE 10301234
DE	[1-6][0-9]YYYYnnnnnn	Prefix 10 (Patent), 20 (Utility model), 60 (Translation) + four digit year + 6 digit number	since 2004 ^*	DE 102020012345
EP	nnnnnnn	up to 7 digit number	since 1978	EP 3001234
US	nnnnnnnn	up to 8 digit number	Grants since 1870 ^*	US 10001234
US	YYYYnnnnnnn	four digit year + 7 digit number	Applications since 2001 ^*	US 20030123456
WO	YYnnnnn	two digit year + 5 digit number	to 2001	WO 0001234
WO	YYnnnnnn	two digit year + 6 digit number	2001 to 2003	WO 02012345
WO	YYYYnnnnnn	four digit year + 6 digit number	since 2004 ^*	WO 2012012345
CN	nnnnnnnnn	9 digit number	A, B und U ^*	CN 100123456
KR	YYYYnnnnnnn	four digit year + 7 digit number	A publications, remove prefix 10 from depatisnet ^*	KR 20070123456
KR	nnnnnnnnnn	up to 9 digit number	Grants ^*	KR 101011179

Application numbers

Country	Number format	Description	Valid (years)	Example
DE	[1-6][0-9]YYYYnnnnnn	Prefix 10 (Patent), 20 (Utility model), 60 (Translation) + four digit year + 6 digit number	since 2004 ^*	DE 102020012345
EP	YYnnnnnn	two digit year + 6 digit number	since 1978 ^*	EP 20192172
US	nnnnnnnn	two digit serial number + 6 digit number	since 2001 ^*	US 17012345
WO	PCT/CCYYYY/nnnnnn	PCT + / + application country + four digit year + / + 6 digit number	since 2004 ^*	PCT/EP2012/012345
CN	YYYYnnnnnnn	four digit year + 7 digit number	since ???? ^*	CN 20160123456
KR	YYYYnnnnnnn	four digit year + 7 digit number	since ???? ^*	KR 20160123456

lines with * contain the format currently used