International Patent Classification (IPC) - Documentation, DTDs and Schemas

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IPC Master files specification  (Version 2.0)
QC010 Amendments to Master files and Internet publication  (Version 1.1)
Specification of RCL file in Word format (Version 2.0)
Specification of the validity file in Word format (Version 2.2)


By-Products Documentation

Specification of the IPC Valid Symbol List in MS Word format (Version 2.0)



DTD for catchword index  (Version 1-01)
DTD for compilation file (Version 1-03)
DTD for concordance list (Version 1-00)
DTD for elayer definitions (Version 1-02)
DTD for elayer illustrations (Version 1-01)
DTD for IPC scheme (Version 1-02)
DTD for validity file (Version 1-01)



Schema for catchword index  (Version 1-01)
Schema for compilation file (Version 1-01)
Schema for concordance list (Version 1-00)
Schema for elayer definitions (Version 1-01)
Schema for elayer illustrations (Version 1-00)
Schema for IPC scheme (Version 1-02)
Schema for validity file (Version 1-01)