ZHUHAI COSMX BATTERY CO., LTD.

ZHUHAI COSMX BATTERY CO., LTD. (often referred to as COSMX Battery or COSMX) is a publicly traded Chinese company headquartered in Zhuhai, China. Founded in 2007 as Zhuhai Coslight Battery Co., Ltd. and rebranded to COSMX in 2019, the company is listed on the Shanghai Stock Exchange under ticker 688772:SHH. As of March 31, 2026, COSMX reported a trailing 12-month revenue of $2.19 billion and a market capitalization of $3.28 billion, with approximately 23,255 employees.

COSMX is primarily engaged in the research and development, production, and sales of lithium-ion batteries. Its product portfolio includes consumer batteries, such as cells and PACKs for laptops, tablets, smartphones, smart wearables, consumer drones, and power tools, often utilizing patented silicon anode technology. The company also manufactures power batteries for automotive low-voltage systems, electric motorcycles, and industrial drones, alongside energy storage batteries for residential, commercial, and telecommunication applications. COSMX operates production bases in Zhuhai, Chongqing, and Zhejiang, with additional facilities in India and Malaysia.

ZHUHAI COSMX BATTERY CO., LTD. is an operating company actively involved in patent litigation, primarily against its competitor, Ningde Amperex Technology Limited (ATL). The company's single tracked case, ZHUHAI COSMX BATTERY CO., LTD. v. Ningde Amperex Technology Limited before the Patent Trial and Appeal Board (PTAB) on April 1, 2025, reflects its posture as a plaintiff challenging a competitor's patent. This PTAB action is part of broader, multi-jurisdictional disputes where COSMX has been a defendant in infringement suits filed by ATL in the US (including the Eastern District of Texas), Germany, and China, and has also initiated counterclaims and acquired patents from third parties, such as Panasonic, for assertion.

The ongoing patent conflicts between COSMX and ATL are notable for their breadth, covering fundamental lithium-ion battery technologies, including electrolyte compositions, internal structures, and safety features. In a significant development, China's Supreme People's Court recently overturned a lower court's infringement ruling against Zhuhai CosMX, dismissing all claims by ATL in a dispute over a lithium battery patent. Separately, ATL has sued COSMX in the Eastern District of Texas over multiple patents related to battery safety and performance, while COSMX has filed Inter Partes Review petitions at the PTAB against ATL's patents.