On 29 March 2013, the Chinese Patent Office (SIPO) launched Spanish and Japanese interfaces to the "China Patent Inquiry System" (CPQUERY), which can be accessed free-of-charge from SIPO's English website. Interfaces in other languages will follow.
CPQUERY gives the public online access to file wrapper information for Chinese patent, utility model and design applications. The system covers information for applications filed on or after 10 February 2010 and is updated on a weekly basis.
For further information on SIPO's "China Patent Inquiry System", please refer to this earlier update or contact firstname.lastname@example.org.