CG - Congo Congo
CD - Congo, Democratic Republic Congo
CK - Cook Islands Cook Islands
CR - Costa Rica Costa Rica
CI - Cote D' Ivoire (Ivory Coast)
HR - Croatia (Hrvatska) Croatia
CU - Cuba Cuba
CY - Cyprus Cyprus
CZ - Czech Republic Czechoslovakia
CS - Czechoslovakia (Former) Czechoslovakia (former) Czechoslovakia
DK - Denmark Denmark
DJ - Djibouti Djibouti
DM - Dominica Dominican Republic
DO - Dominican Republic Dominican Republic
TP - East Timor Timor-Leste
EC - Ecuador Ecuador
EG - Egypt Egypt
SV - El Salvador El Salvador
GQ - Equatorial Guinea Equatorial Guinea
ER - Eritrea
EE - Estonia
ET - Ethiopia
FK - Falkland Islands (Malvinas)
FO - Faroe Islands
FJ - Fiji
FI - Finland Finland
FR - France France
FX - France, Metropolitan
GF - French Guiana French Guiana
PF - French Polynesia French Polynesia
TF - French Southern Territories French Southern Territories
MK - F.Y.R.O.M. (Macedonia)
GA - Gabon Gabon
GM - Gambia Gambia
GE - Georgia Georgia
DE - Germany Germany
GH - Ghana Ghana
GI - Gibraltar Gibraltar
GB - Great Britain (UK) United Kingdom
GR - Greece Greece
GL - Greenland Greenland
GD - Grenada Grenada
GP - Guadeloupe French Draper Islands
GU - Guam Guam
GT - Guatemala Guatemala
GN - Guinea Guinea
GW - Guinea-Bissau Guinea-Bissau
GY - Guyana Guyana
HT - Haiti Haiti
HM - Heard and McDonald Islands Heard and McDonald Islands
HN - Honduras Honduras
HK - Hong Kong Hong Kong SAR China
HU - Hungary
IS - Iceland Iceland
IN - India India
ID - Indonesia Indonesia
IR - Iran Iran
IQ - Iraq Iraq
IE - Ireland Ireland
IL - Israel Israel
IT - Italy Italy
JM - Jamaica Jamaica
JP - Japan Japan
JO - Jordan Jordan
C Granted Patent
CzechoslovakiA Specification of Patent Application (Patent Act 1990) a (Patent Application. Patent Law 1990) CS Former CzechoslovakiaA2 Specification of Patent Application (Patent Application) Lovak B Specification of Patent (Patent Act 1990)
( Patent. Patent. Patent Law 1990)
Czech A3 Unexamined Patent Application Specification (Law 527/90) Republic (Unexamined Patent Application. Law 527/90) CZ Czech B6 Granted Application Specification (Law 527/90)
p>(Granted Application ,Law 527/90) East Germany A Provisional Economic Patent(Provisional Economic Patent)
A5 Provisional Exclusive Patent(Provisional Exclusive patent)
A7 Exclusive Patent (Exclusive Patent)
A9 Publication Specification of Patent Application (Application )
B Economic Patent (Economic Patent)
B1 Economic Patent (Economic Patent) DD Former East Germany B3 Exclusive Patent (Exclusive Patent)
B1 Economic Patent (Exclusive Patent)
B1 Economic Patent (Exclusive Patent) Patent)
B5 Patent Application Publication Specification (Application)
C Examined Granted Patent Specification
(Examined and Searched Patent)
C4 Examined and Searched Patent Specification
(Examined and Searched Patent)
. Searched Patent)
Germany A1 Patent Application (Application)
C1 Patent
Specification (first Publication)
C2 Patent
Specification (second Publication)
C2 Patent Specification (Second Publication)(Patent
Specification (second Publication)
Extended information. : The State Intellectual Property Office (SIPO) grants a patent application number and a check digit at the time of acceptance of a patent application. The check digit is located after the patent application number, and a subscripted single-byte solid dot symbol is used as a spacer between the patent application number and the check digit. Unless otherwise provided by laws, regulations and administrative rules, the patent application number and the check digit (including the spacer between them) shall be used in conjunction with each other in the various statutory procedures provided for in the Patent Law, the Rules for the Implementation of the Patent Law and other relevant regulations. Usage Rule 2: Joint Use of Patent Application Number and China National Code CN The China National Code CN can be used jointly with the patent application number to indicate that the patent application is accepted by the State Intellectual Property Office of China. The code CN should be located before the patent application number, and if necessary, a 1-digit single-byte space can be used between CN and the patent application number. Baidu Encyclopedia - Patent Application Number Baidu Encyclopedia - Patent Specification