On 6 September 2024, Ningde Amperex Technology Limited (CATL), one of the world's largest lithium-ion battery manufacturers, filed a patent infringement action against Zhuhai CosMX Battery Co., Ltd. in the United States District Court for the Eastern District of Texas before Judge Rodney Gilstrap. CATL asserted six US patents — US12015118B2, US11769910B2, US11799131B2, US11923498B2, US10964927B2, and US11575148B2 — all directed at lithium-ion battery products and related services.

The recorded Basis of Termination is 'Dismissed with Prejudice.' The docket order states that the parties filed a Stipulation of Dismissal pursuant to Rule 41(a)(1), jointly moving to dismiss all claims with prejudice, with each party bearing its own costs and fees. The court accepted and acknowledged the stipulation, directed the clerk to close the case, and denied all pending requests for relief as moot.

The case ran for 655 days before resolution — a duration consistent with cases that progress through substantial discovery and claim construction activity before the parties reach a resolution. The equal cost-bearing arrangement is notable: it suggests neither party extracted a concession on fees. The specific terms underlying the parties' agreement to dismiss, if any, are not disclosed in the available public record.