Ninestar files patent infringement lawsuit

June 27, 2018

The company has announced that it has filed a patent infringement complaint in Guangzhou Intellectual Property Court.

The complaint accuses Zhuhai Zhengyin Electronic Technology Co., Ltd (hereinafter referred to as Zhuhai Zhengyin) of infringing Ninestar’s inkjet cartridge patent.

The patent in question is Chinese patent No. ZL201220712945.2, which Ninestar acquired for its independently developed ‘Negative Pressure Generating Mechanism’, a technology the company designed to offer “good control of negative pressure” in its cartridges.

As the company explains, “The failure to put negative pressure under good control will result in an overlarge fluid pressure at the nozzle of print head that adversely affects print performance due to phenomena such as ink leakage. Many companies tried to solve this technical problem but failed.”

Now, Ninestar has filed a patent infringement complaint against Zhuhai Zhengyin for the infringement of this patent, claiming that Zhuhai Zhengyin “is manufacturing and selling many products (specifically 950XLBK, 951XLC/M/Y; 711XLBK/C/M/Y; and 932XLBK, 933XLC/M/Y for HP) that infringe on Ninestar’s patent rights of the above mentioned patent technology.”

Ninestar has stated its desire for Zhuhai Zhengyin to cease these “infringement acts” immediately, and is seeking compensation for the “financial losses” that have arisen through the alleged patent infringement.

The case was accepted on 13 June 2018 and the first hearing will take place in August.