On August 17, 2021, the CNIPA issued No. 51423 invalidation decision, declaring that all patent rights of the patent, entitled "multi-frequency contact wearable devices", which were owned by Shenzhen Beisonease Technology Co., LTD were invalid.

After accepting the client's entrustment, the team of Hengbo had done a lot of painstaking work and retrieval and finally successfully invalidate the patent. 

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