On the evening of July 7, Minxin Co., Ltd. announced that it had recently received a civil ruling from Beijing Intellectual Property Court, ruling on the case of Geer Co., Ltd. suing Suzhou Minxin Microelectronics Technology Co., Ltd. and Beijing Baidu
Netcom Technology Co., Ltd. for infringement of invention patent right. During the trial of the case, Geer Co., Ltd. applied to withdraw the lawsuit, With the permission of Beijing Intellectual Property Court, he paid a trial fee of 25 yuan.
On November 18, 2019, Geer filed a civil complaint to Beijing Intellectual Property Court on the ground of infringing the patent right of invention. The corresponding patent involved was "a diaphragm structure in MEMS microphone and its manufacturing method", with the patent number of "zl201410525743.0", and Zhang Minxin paid a compensation of 30 million yuan.
In April 2020, Geer filed a lawsuit with Qingdao intermediate people's court, demanding that Minxin stop the infringement and compensate 10 million yuan for economic losses. In June 2021, Qingdao intermediate people's court made a civil judgment of the first instance on the above-mentioned case, and ordered Minxin to stop the infringement and compensate Geer for 4 million yuan.
In the same month, Minxin and Geer respectively refused to accept the first instance judgment made by Qingdao intermediate people's court and appealed to the Supreme People's court according to law. However, on June 28, Goethe applied to Beijing Intellectual Property Court for withdrawal.