CM HK, Ltd.

CM HK, Ltd., legally known as China Mobile Hong Kong Company Limited (CMHK), is a major telecommunications operator headquartered in Hong Kong. Established in January 1997, it operates as a wholly-owned subsidiary of China Mobile Limited (HKEx: 941, NYSE: CHL), a large state-owned enterprise in China. As of March 2026, CMHK has approximately 744 employees. Its parent company, China Mobile Limited, was ranked #25 in Forbes' Global 2000 in 2023 and reported 1.0 billion mobile customers and 320 million wireline broadband customers as of March 2025.

CMHK provides a comprehensive suite of mobile communication and internet services in Hong Kong. Its offerings include mobile telephony, broadband internet, data services, international direct dialing (IDD), and international roaming. The company leverages advanced network technologies, including 4G LTE, 3G HSPA, GPRS, EDGE, and 5G, and is actively involved in integrating 5G applications with artificial intelligence, IoT, cloud computing, and big data for smart city development.

In terms of patent litigation, CM HK, Ltd. is primarily observed in a defensive posture, based on the authoritative case data. The company is listed as a defendant in its single tracked case and has no recorded plaintiff appearances in the provided database. This indicates CMHK operates as an operating company that is a target in patent disputes rather than a patent assertion entity.

The company's notable litigation involves the case Samsung Electronics Co., Ltd. et al. v. CM HK, Ltd. et al., filed in the U.S. District Court for the Northern District of California on September 18, 2024. In this suit, Samsung initiated a declaratory judgment action against CM HK, Ltd. and CyWee Group Ltd., seeking a declaration of non-infringement related to U.S. patents concerning motion-sensing technology. Samsung's pursuit of jurisdiction over CM HK, Ltd. in this case includes an "alter ego" theory, suggesting an intertwined relationship between CM HK, Ltd. and co-defendant CyWee Group Ltd.