Recently, Aixue Ming, the general manager of Thanko Vacuum Electronics Co., Ltd in Nanjing received the civil judgment from the Supreme People’s Court of Jiangsu Province. Since Italy SAES company withdrawn the suite, the court upheld the original verdict – Thanko’s production, sale, offering for sale of "Mercury release agent" does not infringe the plaintiffs patent. On 9th June, the State Patent Reexamination Board has declared the patent of SAES invalid. It is reported that, "Mercury release agent" is an essential component used in backlight for the LCD panel. Before produced in China, the Italian SAES companies monopolize the global market share of 95%. But in October 2006, with public technologies, Thanko researched and developed their own "Mercury release agent” and quickly won certificate from 12 companies of 14 major global manufacturers of LCD backlight. However, from the end of 2007, Thanko and its customers continued to receive the Italian SAES's infringement warning; February 2009, Thanko submitted the application to Chinese Patent Reexamination Board to require the declaration of SAES patent invalidity; In the same year, SAES lodged a suite against Thanko to Naning Intermediate court to called for the prosecution of its patent infringement liability.