On April 18, 2023, the China National Intellectual Property Administration issued the Invalidation Decision No. 561415, announcing that all the patent rights owned by WANG Wencui and entitled "Swimming Pool Cleaning Robot" were invalid.

After accepting the client's entrustment, the Hengbo team conducted a lot of arduous searches, and finally successfully invalidated the patent.

According to the law, if the patentee refuses to accept the invalidation decision, he can file an administrative lawsuit with the Beijing Intellectual Property Court within three months.