CyWee Group Ltd., a patent holding entity asserting rights in 3D motion-sensing technology, filed suit against HTC Corp. and HTC America, Inc. in the Western District of Washington on June 16, 2017. The complaint targeted HTC’s commercially significant smartphone lineup — including the HTC 10, HTC Bolt, HTC One A9, HTC One M9, and HTC U Ultra — alleging infringement of two motion-sensing patents: US8441438B2 and US8552978B2. Both patents relate to orientation and motion detection methods used in mobile devices, a technology embedded in virtually every modern smartphone.

The case closed on March 12, 2025, following a sequence of stepwise dismissals that progressively narrowed the docket. The court first dismissed all claims against a third-party component supplier (STM), then dismissed CyWee Motion Group Ltd.’s cross-counterclaims, and finally granted a stipulated dismissal of all patent-related claims. The sole remaining claims — HTC’s third-party contribution and Washington Consumer Protection Act claims against CyWee Motion Group Ltd. — were then dismissed without prejudice by joint stipulation. The without-prejudice designation means no party is legally barred from relitigating these claims, though the practical likelihood varies.

The duration — 2,826 days — is notable even by the standards of complex multi-patent litigation. The layered dismissal sequence, involvement of a component supplier (STM), and the parallel Consumer Protection Act claims suggest the dispute evolved well beyond a straightforward infringement action. The public record does not disclose any settlement terms, damages payments, or licensing arrangements, leaving the commercial resolution opaque. Whether the parties reached a confidential agreement or simply exhausted litigation incentives cannot be determined from the docket alone.