Baidu Patents

Baidu Patents, or Baidu Zhuanli (Chinese: 百度专利) is a Chinese free online patent search service, launched on 1 January 2008. The Baidu Patents search engine is the result of a collaboration between the China Patent Information Center (CPIC), the Chinese Patent Office (SIPO) and Baidu. Baidu Patent Search is said to be integrated with a patent database which amounts to 2.7 million Chinese patents.