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Chinese patent documents became part of the PCT minimum documentation on 1 July 2012, which indicates the importance of Chinese patent documentation as part of the global prior art. This area provides details on filing trends and grant figures in China, offers background information on the Chinese patent system, and gives guidance on other essentials of Chinese patent documentation. See the Searching in databases section for tips on how to search free sources of Chinese patent information.


Answers to common questions about patents and patent information in China. If you cannot find the answer you are looking for, you can write to us using our form.

Grant procedure

A flowchart overview of the most important steps in the Chinese procedures from filing an application to the grant of a patent.

Useful terms

Some common patent terms in Chinese, Western transcription and English translation.

Facts and figures

Developments in filing figures and application trends in China.

Numbering system

An introduction to the most important document types (including kind codes) and explanations of the formats for document numbers in China.

Searching in databases

Tips and tricks for using free Chinese data sources without knowing the language. Simple, step-by-step search guides demonstrate how to make the most of the wealth of data available in original Chinese databases.

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