On March 26, 2024, the China National Intellectual Property Administration issued Invalidation Decision No. 566919, declaring that all patent rights of "Neck-mounted Fan" owned by SShenzhen Lanhe Technologies Co., Ltd. Were invalid.

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

The decision held that the party is responsible for providing evidence to prove the facts on which his request for invalidation is based. If there is no evidence or the evidence is insufficient to prove the party's factual claims, the party with the burden of proof shall bear the adverse consequences.

According to legal provisions, if the patentee is dissatisfied with the invalidation decision, he or she may file an administrative lawsuit with the Beijing Intellectual Property Court within three months.