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For additional information, see IPC Reform and STN.

Home   •   Our Expertise  •  CAS Databases  •  CAplus  •  Patent Coverage in CA  •  Kind Code List for Patents Covered
Kind Code List for Patents Covered

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 CA basic patents and patent family members for the countries covered by CAS.

See Changes to CAS Patent Kind Codes

Kind Code List for Patents Covered
Country Code Country Kind Code Type of Publication or Document Title
AP African Regional Industrial Property Organization A Patent
AT Austria A/A5/A1, A2 sterreichische Patentanmeldung (Pre-grant Application)
A4 sterreichische Patentanmeldung (Post-grant Application)
B Patentschrift (Patent)
AU Australia A/A1/A5 Specification
B Patent Specification
B1 Patent (without previous A1 publication)
B2 Patent
B3 Petty patent
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, B2 Published Patent Application, Patent (First Publication Level)
B1 Patent (Second Publication Level)
B9 Corrected Document
BR Brazil A Pedido de Privilegio
CA Canada A1 Patent/Brevet
A2 Patent/Brevet (Division)
A Patent/Brevet (not distinguished as A1/A2)
AA Laid-open Application
B Reissue Patent/Brevet de Redelivrance
C Granted Patent (1989 Law)
CH Switzerland A Patentschrift/Expose d'Invention/ Exposto d'Invenzione (Main Patent/Patent of Addition unexamined)
A3/A4 Auslegeschrift/Fascicule de la Demande/Fascicolo della Dommanda (Patent application, examined)
A8 Modified first page
B Patentschrift/Expose d'Invention/ Expost d'Invenzione (Main Patent/Patent of Addition examined)
CN China, People's Republic of A Unexamined Patent Application

B


C

Y

Examined Patent Application (pre-1993)

Granted Patent (1993-)

Granted Utility Model Patent
CS Czechoslovakia B/B1 Popis Vynalezu k Autorskemu Osvedceni (Author's Certificate)
P/B2 Popis Vynalezu k Patentu (Basic Patent)
M/B3 Popis Vynalezu k Autorskemu Osvedceni (Addition to Author's Certificate)
L/B4 Popis Vynalezu k Patentu (Patent of Addition)
B6 Patentovy Spis (Patent Document; 1990 Law)
CZ Czech Republic B6 Patentovy Spis
DD German Democratic Republic Z/A1 Patentschrift, Wirtschaftspatent (Economic Patent, formal examination)
Y/A2 Patentschrift, Wirtschaftspatent (Economic Patent of Addition, formal examination)
C/A5 Patentschrift, Ausschliessungspatent (Exclusive patent, formal exam.)
W/A6 Patentschrift, Ausschliessungspatent (formal examination; Addition)
T/A3 Patentschrift, Hauptpatent (formal and essential examination)
U/A4 Patentschrift, Hauptpatent (formal and essential examination; Addition)
D/A7 Patentschrift, Ausschliessungspatent (formal and essential examination)
S/A8 Patentschrift, Ausschliessungspatent (formal and essential examination; Addition)
A9 Offenlegungsschrift
B1 Patentschrift, Wirtschaftspatent
B3 Patentschrift, Ausschliessungspatent
B5 Patentschrift
C2 Patentschrift, Wirtschaftspatent
C4 Patentschrift, Ausschliessungspatent
C5 Patentschrift
DE Germany A/A1 Offenlegungsschrift (unexamined application)
A9 Corrected Complete Specification
B Auslegenschrift
B1 Auslegeschrift (examined application, first publication)
B2 Auslegeschrift (examined application, published after A1)
B3 Patentschrift (no pre-grant publication)
B4 Patentschrift (with pre-grant publication)
B9 Corrected Complete Specification (Granted Patent)
C Patentschrift (patent)
C1 Patentschrift (published without A1, B1, or B2; patent, 1st publication of the application)
C2 Patentschrift (patent, 2nd publication after B2)
C3 Patentschrift (patent, old law, published after A1 and B2)
C5 Geaenderte Patentschrift (Modified document)
C9 Corrected Complete Specification (Revised Patent)
T Translation of the Int. Application, "pink" spec.
T5 Translation of Publication of International Application
U1 Utility Model
U9 Corrected Complete Specification (Utility Model)
DK Denmark A/A5 Almindeligt Tilgaengelig Patentansoegning (Unexamined Application)
B Fremlaeggelsesskrift (examined application)
B1 Meddett (1993 Law)
B2,B3,B4 Patentskrift (1993 Law)
C Patent
EE Estonia A Patenditaotlus
B1 Patendikirjeldus
EG Egypt A Egyptian (Patent Document)
EP EPO (European Patent Office) A1 European Patent Application (with search report)
A2 European Patent Application (without search report)
A3 European Patent Application (search report for A2)
B1 European Patent
B2 European Revised Patent
ES Spain A1 Patent
A2 Certificate of Addition
A3 Patent of Importation
A4 Patent publications not distinguished as A1-A3
A5 Patent, fictitious 2nd publication
A6 Certificate of Addition, fictitious 2nd publication
B1 Patent Granted with Search Report
B2 Examined Granted Patent
T3 Patent of Invention
FI Finland A Unexamined Application
B Examined Application
B1 Patenttijulkaisu
C Patent
FR France A Brevet d'Invention (old law)
A1 Unexamined Patent Application
A2 Unexamined Addition to Patent Application
A3 Unexamined Utility Model Application
A4 Unexamined Addition to Utility Model
A5 Patent, 1st publication (without A1)
A6 Patent of Addition, 1st publication (published without A2)
A7 Utility model, 1st publication (without A3)
A8 Addition to Utility Model 1st publication (without A4)
B1 Patent granted after examination
B2 Addition to a Patent after examination
B3 Utility Model after examination
B4 Addition to Utility Model after examination
E Addition to a Patent (before 1969)
M Medical Patent (before 1969)
GB United Kingdom AO Application for Patents
A Patent Specification (1949 Law; Document numbers lower than 2,000,00)
A/A1 Patent Application (1977 Law; Document numbers higher than 2,000,000)
B Amended Patent Specification (1949 Law; Document numbers lower than 2,000,000
B2 Patent Specification (1977 Law; Document numbers higher than 2,000,000)
GC Gulf Cooperation Council A Patent
GR Greece A Greek Patent Application
B1 Greek [Patent Document]
B2 Patent (with pre-grant publication)
T3 Translation of European Patent
HK Hong Kong A2 Short-Term Patent Specification
A1 Patent
HR Croatia A1 Croatian Patent Application
B1 Registration of granted patent
HU Hungary P/ B Szabadalmi Leiras (Patent)
A/A1 Halasztott Talalmanyi Bejelentes (unexamined patent application)
O/A2 Teljes Talalmanyi Bejelentes (examined patent application)
IE Ireland A1 Patent Application
A2 Short-Term Patent Application
IL Israel A/A1 Application for Patent
IN India A Patent Application
A1 Granted Patent Specification
IP Web publication   Technical disclosure from IP.com
IT Italy A Patent
A1 Patent Application
B1 Patent (granted)
JP Japan A2 Kokai Tokkyo Koho (unexamined patent application)
B1 Examined application (1st publication without prior A2)
B2 Toroku (granted patent with a preceding application)
B4 Tokkyo Koho (examined patent application)
T2 Kohyo Koho (Japanese translation of PCT applications filed by foreign applicants)
U Registered Utility Model Application
U6 Correction to Registered Utility Model Application
KR Korea, Republic of

A

Examined Patent Application

B1 Granted Patent
U Utility Model Applications
Y1 Granted/Registered Utility Model
LT Lithuania B Patento Aprasymas (Patent)
LU Luxembourg

A1

Patent Application with Search Report

A2 Patent Application without Search Report
LV Latvia B

Iszinas (Patent)

MC Monaco A Brevet d'Invention
MD Moldova A Unexamined Patent Application
B1 Examined Patent Application
F1 Patent Document
MX Mexico A Patent Application
NL Netherlands A Unexamined Patent Application
B Examined Patent Application
C Patent
A1 Inschrijving
C1 Octrovi - 6 yr.
C2 Octrovi - 20 yr.
NO Norway A Unexamined Patent Application
B Examined Patent Application
B1 Patent
C Patent
NZ New Zealand A Intellectual Property Office of New Zealand IP Summary Report
PL Poland B Opis Patentowy (Inventor Certificate)
M Opis Patentowy (Inventor Certificate; Addition)
P/B1 Opis Patentowy (Main Patent)
P/B2 Opis Patentowy Patentu Tymczasowego (Provisional Patent)
L/B3 Opis Patentowy (Patent of Addition)
L/B4 Opis Patentowy Patentu Tymczasowego (Provisional Patent of Addition)
PT Portugal A Portugese Patent Application
B Granted Patent
T Translation of European Patent
RD     Research Disclosure
RO Romania B/B1 Descrierea Inventiei (Inventor Certificate)
L/B4 Descrierea Inventiei (Patent of Addition)
M/B2 Descrierea Inventiei (Inventor Certificate; Addition)
P/B3 Descrierea Inventiei (Patent)
RU Russia C1/C2 Patent
SE Sweden A Unexamined Patent Application
B Examined Patent Application
C Patent
C2 Patent (1949 Law)
SG Singapore A1 Patent Application
SI Slovenia C2/C Patent S Skrajsanim Trajanjem, Patent
SK Slovakia B6

Patentovy Spis (Patent)

SU USSR (Union of Socialist Soviet Repub) D/A3 Patent
T/A1 Inventor's Certificate
S/A4 Patent of Addition
U/A2

Addition to Inventor's Certificate

TR Turkey A1/A2 Turkish Patent Application
TW Taiwan B/B1 Patent
US United States A Granted US Patent (issued prior to Jan. 2, 2001)
A0 Published Patent Application (NTIS; 1974-)
A1 Patent Application (issued on or after Jan. 2, 2001)
A2

Republished US Patent Application (issued on or after Jan. 2, 2001)

A1/A2 United States Patent Application (Trial Program; 1975-1976)
A9 Corrected of a US Patent Application (issued on or after Jan. 2, 2001)
B1/B2/B3 Reexamination Certificate (1st, 2nd, 3rd issue, issued prior to Jan. 2, 2001)
B1 Granted Patent (no pre-grant publication; issued on or after Jan. 2, 2001)
B2 Granted Patent (with pre-grant publication; issued on or after Jan. 2, 2001)
C1/C2/C3 Reexamination Certificate (1st, 2nd, 3rd issue; issued after Jan. 2, 2001)
E Reissue Patent (1967-)
H United States Defensive Publication (1969-1987)
H1 Statutory Invention Registration (1986-)
P1/P3/P4/P9 United States Plant Patent Application Publication (2001-)
P3 Granted Plant Patent with pre-grant publication
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 for A2)
B1 Publication of Amended Claims
C1 Modified First Page
C2 Corrected Document
ZA South Africa

A

Application for Patent
A1 Application for Patent (used to distinguish a document with the same number as a previously published document)

Updated 4/27/2009 12:39:11 PM
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