Registry Cooperative Patent Classification

The Cooperative Patent Classification (CPC) is a patent classification system, developed jointly by the European Patent Office (EPO) and the United States Patent and Trademark Office (USPTO). It is based on the previous European classification system (ECLA), which itself was a version of the International Patent Classification (IPC) system. The CPC patent classification system has been used by EPO and USPTO since 1st January, 2013.

Prefix
cpc
Links
Homepage
Contact
Missing Contact
Pattern for Local Unique Identifiers

Local identifiers in Cooperative Patent Classification should match this regular expression:
^([A-H,Y]|[A-H, Y]\d{2}|[A-H, Y]\d{2}[A-Z]|[A-H, Y]\d{2}[A-Z]\d{1,3}|[A-H, Y]\d{2}[A-Z]\d{1,3}(\/)?\d{2,})$

Example Local Unique Identifier
A01M1/026   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from Cooperative Patent Classification should match this regular expression:
^cpc:([A-H,Y]|[A-H, Y]\d{2}|[A-H, Y]\d{2}[A-Z]|[A-H, Y]\d{2}[A-Z]\d{1,3}|[A-H, Y]\d{2}[A-Z]\d{1,3}(\/)?\d{2,})$

Example CURIE
cpc:A01M1/026
Metaregistry

The metaregistry provides mappings between the Bioregistry and other registries. There are 3 mappings to external registries for cpc.

Registry Name Metaprefix External Prefix
Identifiers.org miriam cpc
Name-to-Thing n2t cpc
Prefix Commons prefixcommons CPC
Providers

Providers are various services that resolve CURIEs to URLs. The example CURIE cpc:A01M1/026 is used to demonstrate the provides available for cpc. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
Cooperative Patent Classification cpc https://worldwide.espacenet.com/classification?locale=en_EP#!/CPC=A01M1/026
Bioregistry bioregistry https://bioregistry.io/cpc:A01M1/026
Identifiers.org miriam https://identifiers.org/cpc:A01M1/026
Name-to-Thing n2t https://n2t.net/cpc:A01M1/026