To ensure the accuracy and validity of International Patent Classification (IPC) codes for Chinese patent documents, the CNIPA will adopt IPC (Version 2026.01) starting from January 1, 2026, for the classification, publication, and announcement of Chinese patent documents.

Compared with IPC (Version 2025.01), the new IPC has revised 1,615 classification codes, including 517 newly added and 206 deleted.

To facilitate the study and application of the new IPC, the CNIPA has translated and compiled relevant materials involving the new IPC (Version 2026.01), including the IPC Classification Table, Classification Definitions, and a Comparison Table between the Old and New Versions, all of which are available via the official website of the CNIPA.

Website: https://www.cnipa.gov.cn/col/col3161/index.html

(Source: the CNIPA)