The International Patent Classification (IPC), established by the
Strasbourg Agreement 1971, provides for a hierarchical system of language independent symbols for the classification of patents and utility models according to the different areas of technology to which they pertain. A new version of the IPC enters into force each year on January 1. Find out more about the IPC.
Access the International Patent Classification
Assistance tools to the IPC
IPCCAT - A categorization assistance tool for the IPC system mainly designed to help to classify patents at IPC class, subclass or main group level.
STATS - A tool which provides IPC predictions based on statistical analysis of the patent documents containing the specified search terms.
IPC Green Inventory - Facilitates searches for patent information relating to Environmentally Sound Technologies.
Resources for the IPC Community
WIPO provides intensive training to the staff of national or regional industrial property offices in the use of the IPC for classifying and searching.
Also available, training examples prepared by the IPC Revision Working Group and PowerPoint presentations addressing different issues relating to the use of the IPC.
Download and IT support
Circulars are available in respective meeting pages.
Non-regular and discontinued meetings
PATENTSCOPE you can search through more than 30 million patent documents including 2.2 million international patent applications submitted under the PCT.
Other International Classifications
Nice (goods and services for registration of marks)
Vienna (figurative elements of marks)
Locarno (industrial designs)
Artificial intelligence at WIPO
Find out how
artificial intelligence, big data analytics and new technologies such as blockchain can be used to address the growing challenges facing IP offices.