On July 22, 2020, the CNIPA issued No. 45892 Invalidation decision, declaring that the invention patent, named "a concentration detection device and liquid pumping tube" of Shenzhen Mindray Bio-medical Electronics Co., Ltd., remained valid.

After accepting the client's entrustment, the team of Hengbo had done a lot of preparatory works, successfully pointing out the defects of evidence and the wrong understanding of technology of the other party. Finally, The CNIPA decided to maintain the validity of the patent rights.

According to the law, if the claimant disagrees with the invalidation decision, he or she can file an administrative litigation to the Beijing Intellectual Property Court within 3 months.