Can I access the documents in the file of a Chinese patent application?

Yes. Public online file inspection was introduced in April 2012, via SIPO’s “China  and Global Patent Examination Information Inquiry” (formerly: “China Patent Inquiry System”. The system covers Chinese patent, utility model and design applications filed on or after 10 February 2010, and is updated weekly.

You can retrieve bibliographic data, application information, corrections, SIPO actions, decisions and other documents on file. Post-grant information is not included, however. The documents are provided in PDF.

The system is available in different languages. A step-by-step guide on how to access the files is available on our website.