Patent classification number concept

The International Patent Classification is an internationally accepted patent document classification method. The classification number obtained by classifying patent documents (specifications) using the International Patent Classification is called the International Patent Classification number, usually abbreviated as IPC number.

Application of International Patent Classification

At present, International Patent Classification has been widely used in the classification and retrieval of patent documents in countries around the world. It is revised every five years, and the third or fourth edition is now commonly used, represented by Int Cl~3 or Int Cl~4. The International Patent Classification is useful and should be fully understood. The International Patent Classification has the following main uses. First, it is used for the classification of patent documents. For example, when applying for a patent, relevant patent application documents must be submitted to the Patent Office, and the patent descriptions in these documents must be classified in a unified classification. Only in this way can it be easily queried when needed.

There are many patent classification search methods: International Patent Classification (IPC), European Patent Classification Number (ECIA), United States Patent Classification Number (CCL), Japanese Classification (F1/F-term), etc. . The more common one is IPC; on the website of the European Patent Office, you can use either IPC or ECIA (the classification system is similar to IPC, but the classification is more detailed and more convenient); while on the website of the United States Patent and Trademark Office, you can only use CCL. Japan's F1/F-term is more complicated and we generally do not use it.

my country currently uses the International Patent Classification. www.bangna.com.cn