Patent Kind Codes for CAS Basic and Patent Family Members

CAS has covered patents of chemical, biochemical and chemical engineering interest from 1907 to the present.

This table is a list of patent kind codes for the basic patents and patent family members for the countries covered by CAS.

Kind Code List for Patents Covered
Country Code Country Kind Code Type of Publication or Document Title
AP African Regional Industrial Property Organization A Granted Patent
AR Argentina A1 Patent Application
A2 Divisional Patent Application
A3 Additional Patent Application
A4 Independent Utility Model Application
A6 Additional Utility Model Application
AT Austria A Document Laid Open
A1 Oesterreichische Patentanmeldung (Application with search report)
A2 Oesterreichische Patentanmeldung (Application without search report)
A3 Oesterreichische Patentanmeldung (Search report)
A4 Oesterreichische Patentanmeldung (Post-Grant Application)
A9 Korrigierte Patentanmeldungen (Modified complete specification)
B/B1 Patentschrift (Patent)
T Translation of European Patent Application
AU Australia A OPI (Open to Public Inspection)
A1 Standard/Petty Application
A2 Amended Post OPI
A4 Granted/OPI Innovation Patent
A5 Pre-Granted/OPI Innovation Patent
A6 Amended Post Grant OPI
A9 Correction of an A Level Publication
B1/B2 Patent
B3 Petty Patent
B4 Certified Innovation Patent
B9 Correction of a B Level Publication
BE Belgium A/A1 Patent, French language
A2 Patent, Dutch language
A3 Patent, German language
A4 Improvement Patent, French
A5 Improvement Patent, Dutch
A6 Improvement Patent, German
A7 Patent of Importation, French
A8 Patent of Importation, Dutch
A9 Patent of Importation, German
T1 Transformation of EP Patent, French
T2 Transformation of EP Patent, Dutch
BG Bulgaria A Patent Application
B1 Granted Patent (2nd Level of Publication)
B2 Granted Patent
BR Brazil A/A2 Pedido de Privilegio (Patent application)
A9
Modified complete specification of application for a patent of invention
B1
Granted Patent
B9
Corrected complete granted patent of invention
D0
Patent/Utility Model/Ind. Model/Ind. Design Appl. Filing 
E2
Application of certificate of addition of invention published without search report
F1
Granted certificate of addition of invention
U2
Utility Model Application
Y1
Granted Utility Model
CA Canada A Patent/Brevet
A1 Patent Application
A2 Division of Patent Application
B/E Reissue of Patent
C Patent
C2 Patent Division
E Reissue of Patent
CH Switzerland A/A5/B/B1/B5 Patentschrift/Expose d'Invention/ Exposto d'Invenzione (Patent specification)
A1
Patentanmeldung (Patent application with search report)
A2
Patentanmeldung (Patent application without search report)
A3 Auslegeschrift/Fascicule de la Demande/Fascicolo della Dommanda (Document laid open)
A3
Separate search report with first page of patent application
A9 Patentschrift/Expose d'Invention/Exposto d'Invenzione (Complete patent modified/rectified)
B2
Modified Patent
B9 Patentschrift/Expose d'Invention/Exposto d'Invenzione (Patent with examination modified/rectified)
D Auslegeschrift/Fasciule de la Demande/Fascicolo della Domanda (Patent application before 1978)
CN China, People's Republic of A Unexamined Patent Application
B Examined Application
C Granted Patent
U Granted Utility Model Patent (April 7, 2010 and later)
Y Granted Utility Model Patent (2006 - April 6, 2010)
CR Costa Rica A Patent Application
U Utility Model Application
CS Czechoslovakia B1 Popis Vynalezu k Autorskemu Osvedceni (Inventor's Certificate)
B2 Popis Vynalezu k Patentu (Basic Patent)
B3 Popis Vynalezu k Autorskemu Osvedceni (Additional inventor's certificate)
B4 Popis Vynalezu k Patentu (Additional patent)
B6 Patentovy Spis (Patent specification; 1990 Law)
CZ Czech Republic B6 Patentovy Spis (Patent specification)
DD German Democratic Republic A1 Patentschrift, Wirtschaftspatent (Formal examination - prov. econ. patent)
A2 Patentschrift, Wirtschaftspatent (Formal examination - prov. econ. patent; Additional)
A3 Patentschrift, Hauptpatent (Formal and essential examination - economic patent)
A4 Patentschrift, Hauptpatent (Formal and essential examination - economic patent; Additional)
A5/A6/A7/A8 Patentschrift, Ausschliessungspatent (Formal examination - prov. economic patent)
A9 Offenlegungsschrift (Document laid open - first publication)
B1 Patentschrift, Wirtschaftspatent (Granted patents - no sub. exam.)
B3 Patentschrift, Ausschliessungspatent (Exclusive patent Section 18) 
B5 Patentschrift (Document laid open - second publ.)
C2 Patentschrift, Wirtschaftspatent (Economic patent Section 19)
C4 Patentschrift, Ausschliessungspatent (Economic patent Section 19)
C5 Patentschrift (Document laid open - third publication)
DE Germany A/A1 Offenlegungsschrift (Document laid open - first publication)
A9 Corrected Complete Specification
B Auslegeschrift (published patent application)
B1 Auslegeschrift (Document laid open - first publication without A1)
B2 Auslegeschrift (Document laid open - second publication published after A1)
B3 Patentschrift (Patent - first publication without A1, B1 or B2)
B4 Patentschrift (Patent - second publication after A1 or B1)
B9 Corrected Complete Specification (Granted Patent)
C1 Patentschrift (Patent specification - first publication without A1, B1 or B2)
C2 Patentschrift (Patent specification second publication after B2)
C3 Patentschrift (Old law, Patent specification - third publication after A1 and B2)
C5 Geaenderte Patentschrift (Modified/revised patent)
C9 Berichtigung der Geaenderten Patentshrift (Revised patent, corrected complete specification)
T0/T5 Veroeffentlichung (Translation of published International Application)
U1 Gerbrauchsmusterschrift (Utility model)
U9 Corrected Complete Specification Utility Model
DK Denmark A Patentansogning (Patent application made available to the public)
B Fremlaeggelsesskrift (Document laid open to public inspection)
B1 Meddett (Patent specification)
B2/B3/B4 Patentskrift (1993 Law: amended after opposition)
C Patent
EA  EAPO (Eurasian Patent Organization)  B1  Patent 
EE Estonia A Patenditaotlus (Published patent application)
B1 Patendikirjeldus (Granted patent)
EG Egypt A Patent
EP EPO (European Patent Office) A1 Patent Application (With search report)
A2 Patent Application (Without search report)
A3 European Patent Application Search Report
A9 Modified Complete Specifications
B1 European Patent
B2 European Revised Patent
ES Spain A1 Patente de Invencion (Patent of invention)
A1 Solicitud de Patente (Patent application with search report)
A2 Certificado de Adicion (Certificate of addition)
A2 Solicitud de Patente (Patent application without search report)
A3 Patente de Importation (Patent of importation)
A5 Patent de Invencion (Fictive 2nd Publication)
A6 Patente de Invencion (1986 Law: Patent of invention without search report)
B1 Patente de Grant (Patent published with search report)
B2 Patent de Grant (Patent published after examination without search report)
T3 Patente de Invencion (Translation of granted EP Patent)
FI Finland A Unexamined application open to public inspection
B Kuulutusjulkaisu Utlaggningsskrift (Examined application)
B1/C Patenttijulkaisu Patentskrift (1996 Law: Patent)
FR France A Brevet d'Invention (Old law - Patent of invention)
A1 Demande de Brevet d'Invention (Application for patent of invention - first publication)
A2 Demande de Certificat d'Addition (Application for certificate of addition to a patent - first publication)
A3 Demande de Certificat d'Utilite (Application for certificate of utility - first publication)
A4 Demande de Certificat d'Addition a un Certificat d'Utilite (Application for a certificate of addition to a certificate of utility - first publication)
A5 Brevet d'Invention (Patent of invention published without A1 - first and only publication)
A6 Certificat d'Addition a un Brevet d'Invention (Certificate of addition to a patent of invention published without A2 - first and only publication)
A7 Certificat d'Utilite (Certificate of utility published without A3 - first and only publication)
A8 Certificat d'Addition a un Certificat d'Utilite (Certificate of addition to a certificate of utility published without A4 - first and only publication)
B1 Brevet d'Invention (Published after A1)
B2 Certificat d'Addition a un Brevet d'Invention (Patent of invention published after A2 - second publication)
B3 Certificat d'Utilite (Certificate of utility published after A3 - second publication)
B4 Certificat d'Addition a un Certificat d'Utilite (Certificate of addition to a certificate of utility published after A4 - second publication)
E Certificat d'Addition a un Brevet d'Invention (Old law: Certificate of addition to a patent of invention)
F Certificat d'Addition a un Brevet Special de Medicament (Additional patent for medicament)
M Brevet Special de Medicament (Special patent for medicament)
GB United Kingdom A Patent Application
A9 Corrected Complete Specification of Published Application
B Amended Patent Specification
GC Gulf Cooperation Council A Patent
GR Greece A Patent Application
B1 Patent (Published without A)
B2 Patent (Published after A)
T3 Translation of European Patent
HK Hong Kong A1 Patent
A2 Short-Term Patent Specification
HR Croatia A2 Prijava Patenta (Patent application without search report)
B1 Patentni Spis (Request recording grand rights)
HU Hungary A1 Halasztott Talalmanyi Bejelentes (Unexamined patent application)
A1 Szabadalmi Bejelentesek Kozzetetele (1996 Law: Patent application with search report)
A2 Teljes Talalmanyi Bejelentes (Unexamined patent application)
A2 Szabadalmi Bejelentesek Kozzetetele (1996 Law: Patent application without search report)
A3 Kulon Tajekoztatas Ujdonsagkutatasrol (1996 Law: Search report published)
B Szabadalmi Leiras (Patent specification)
B1 Szabadalmi Leiras (1996 Law: Patent without previous publication)
IE Ireland A1 Patent Application
A2 Short-Term Patent Application
IL Israel A Patent Application
IN India A Patent Application
A1 Patent Specification
IP Web publication   Technical disclosure from IP.com
IT Italy A1 Patent Application
B Patent
B1 Patent (granted)
JP Japan A Kokai Tokkyo Koho (Published unexamined patent application)
B Tokkyo Koho (Published examined patent application)
B1 Tokkyo Koho (Granted patent without prior A)
B2 Tokkyo Koho (Granted patent with preceding publication)
T Kohyo Koho (Unexamined patent application on foreign application)
U Toroku Jitsuyo Shinan Koho (Registered Utility Model Application)
U6 Toroku Jitsuyo Shinan Koho Teisei (Correction to Registered Utility Model Application)
KR Korea, Republic of

A

Kongkae Taeho Kongbo (Unexamined Patent Application)

B1 Teuk-Hu Gong-Bo (Patent Specification)
U Gong-Gae Sil-Yong Sin-An Gong-Bo (Unexamined Utility Model)
Y1 Deung-Rok Sil-Yong Sin-An Gong-Bo (Examined Utility Model)
LT Lithuania B Patento Aprasymas (Patent application)
LU Luxembourg

A1

Patent Application (With search report)

A2 Patent Application (Without search report)
LV Latvia B

Iszinas (Patent publication)

MC Monaco A Brevet d'Invention (Patent of Invention)
MD Moldova A Cerere de Brevet de Inventie (Published non-examined patent application)
B1 Brevet de Inventie (Published examined patent application without A publication)
B2 Brevet de Inventie (Published examined patent application with A)
F1 Brevet de Inventie Acordat (Dec. of grant without examination and without A)
F2 Brevet de Inventie Acordat (Dec. of grant without examination and published with A)
MX Mexico A Solicitud de Patente (Patent application)
MY Malaysia  Granted patents and utility models 
NL Netherlands A Terinzagelegging (Patent application laid open)
A1 Inschrijving (Registered specification laid open)
B Openbaargemaakte (Published patent application)
C Octrooi (Patent)
C1 Octrooi - 6 yr. (Patent without search report)
C2 Octrooi - 20 yr. (Patent with search report)
NO Norway A Unexamined Patent Application
B Utlegningsskrift (Document laid open for public inspection)
B1 Patent (1997 Law)
C Patent
NZ New Zealand A Patent Application
PH Philippines A Patent Application
B1 Granted Patent 
Z Utility Model Application 
PL Poland A5 Opis Patentowy (Inventor Certificate)
A6 Opis Patentowy (Inventor Certificate; Addition)
B1 Opis Patentowy (Patent)
B2 Opis Patentowy Patentu Tymczasowego (Provisional patent)
B3 Opis Patentowy (Additional patent)
B4 Opis Patentowy Patentu Tymczasowego (Provisional additional patent)
PT Portugal A Fasciculo de Patente de Invencao (Application for patent of invention)
B Fasciculo de Patente de Invencao (Granted Patent)
T Translation of European Patent for application for a utility model
RD     Research Disclosure
RO Romania A0 Cerere de Brevet de Inventie (Patent Application)
A1
Descrierea Inventiei (Patent) 
A2 Descrierea Inventiei (Inventor Certificate)
A3 Descrierea Inventiei (Addition to Inventor Certificate)
A7 Complementary description of an invention
B1 Granted patent as first publication
B2
Patent in the amended form subsequently to the revocation procedure
B3
Descrierea Inventiei (Patent - later supply of Romanian abstract) 
B9 Patent with corrections in the description, claims and/or drawings
RU Russia C1 Vydannyi bez Predshestvuyushchei Publikatsii Zayavki (Patent for invention)
C2 Vydannyi s Predshestvuyushchei Publikatsii Zayavki (Patent for invention - second publication
Imperial Russia Patent 
Russian Applications 
SE Sweden A Patent application made available to the public
A0
Patent application filed
A1
Patent application
A2
Corrected patent application
B Utlaeggningsskrift (Document laid open for public inspection)
C Patentskrift (Granted patent)
C2
Patentskrift (1994 Law: Granted patent)  
C3
Corrected granted patent
T3
Translation of EP patent
SG Singapore A1 Patent Application
SI Slovenia A Patent
A2 Patent s Skrajsanim Trajanjem (Short term patent)
SK Slovakia B6

Patentovy Spis (Patent)

SU USSR (Union of Socialist Soviet Republics) A1 Opisanie Izobreteniya k Avtorskomu Svidetel'stvu (Description of the invention for an inventor's certificate)
A2 Opisanie Izobreteniya k Avtorskomu Svidetel'stvu (Description of the invention for an inventor's certificate of addition)
A3 Opisanie Izobreteniya k Patentu (Description of the invention for a patent)
A4

Opisanie Izobreteniya k Patentu (Description of the invention for a patent of addition)

TR Turkey A1 Patent Basvurusu (Patent application with search report)
A2 Patent Basvurusu (Patent application without search report)
A3 Patent Basvurusu (Search report)
B Patent
T1 Patent Basvurusu (Translation of WO international application with search report)
T2 Patent Basvurusu (Translation of WO international application without search report)
TW Taiwan B Zhulanli Gongbao (Patent)
US United States A Granted Patent (prior to 2001)
A0 Published Patent Applications (NTIS)
A1 Patent Application (Post 2000)
A2

Republished Patent Application (Post 2000)

A9 Corrected Patent Application (Post 2000)
B1 Granted Patent (Published without A1)
B2 Granted Patent (Published with A1)
B3 Reexamination Certificate (Prior to 2001)
C1/C2/C3/
C4/C5/C6/
C7/C8/C9
Reexamination Certificate (Post 2000)
E/E1 Reissue Patent
H/H1 Statutory Invention Registration
I4 Defensive Publication
I5 United States Patent Application (Trial Program)
P1 Plant Patent Application Publication
P2 Plant Patent Application Publication (Published without P1)
P3 Plant Patent Application Publication (Published with P1)
P9 Corrected Plant Patent Application
WO WIPO (World Intellectual Property Organization) A1 PCT International Application (With search report)
A2 PCT International Application (Without search report)
A3 PCT International Application Search Report
A9 Republished PCT International Application or PCT International Application Search Report
ZA South Africa

A

Patent Specification
D Patent Specification (Used to distinguish a document with the same number as one previously published)

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