International Patent Classification (IPC) - IT support area

Links to Public WIPO IPC systems

IPC Internet Publication Internet publication of the IPC edition currently in force (interactive)
Split files IPC split at subclass level (static view)
IPC Definitions Viewer Online access to a grouping of all IPC definitions
IEF IPC Electronic Forum for IPC revision projects (interactive)
IPC Tools IPCPUBPREP, IPCPDFPrep, IPC Viewers, Template for IPC Definitions, IPCA6TRANS
IPC_Reclassification Web site for IPC reclassification
IPCCAT Automatically classify/Categorize English or French texts (e.g. from patent documents) according to the IPC (interactive)
Download & IT Support FTP Site The content of the FTP site is also available from


Links to restricted access WIPO IPC systems

Access to these links is restricted by username and password.

IPCRECLASS IPC reclassification service
IPC Revision Management System
ListDef List of definitions having a reference to a given IPC entry