This is the page for IPC files. Version control and integrity checking is possible for some of these files through their associated MD5 Key.
The file with the most recent version of these keys is available Here and its specification is available Here.

Master Files by-products

NOTE: To load an XML file in Excel, read this document.

Compilation File

File containing the list and type of differences between two consecutive editions of the IPC scheme Master File.

Access to IPC at section level in PDF format

IPC Scheme static files (split) at Subclass level

These files were generated by the IPCPUB software package for the Internet publication of the IPC.

IPC Statistics

See detailed statistics page.

IPC Definitions viewer

Access to IPC definitions.

Valid Symbol List

List of IPC symbols defining the complete tree-structure of the IPC.

Current symbol list

Exhaustive list of the symbols usable for the purpose of patent classification in the IPC and their associated date of introduction in the IPC or their associated version indicator ???.

Inventory of IPC ever used symbols

List of symbols that were ever used in any version of the IPC. The second column shows the date of creation of the symbols indicated in the first column. The third column shows the of expiration date of the symbol. If the symbol is still alive, the date of expiration is displayed as "-".

List of IPC scheme titles in authentic languages (e.g. for upload into a spreadsheet)

List of IPC symbols referred to by IPC Definitions

List of IPC symbols referred to by each Definition of this IPC version. Each referring Definition is indicated by the symbol of the IPC Scheme where this Definition appears.

Other files

CPC XML Scheme Files in IPC-like XML format

Files containing the IPC official scheme of this version, expanded with CPC subdivisions provided under the CPC official website on the first of the dates indicated in their filenames.

FI XML Scheme Files in IPC-like XML format

Files containing the IPC official scheme of this version, expanded with FI subdivisions as provided by the Japanese Patent Office on the first of the dates indicated in their filenames.