AT&T Inc. (commonly known as AT&T) is an American multinational telecommunications company headquartered in Dallas, Texas. The current iteration of AT&T Inc. was formed in 2005 when SBC Communications acquired its former parent, AT&T Corporation, though it claims the history of the original American Telephone and Telegraph Company, founded in 1885. It is a publicly traded company on the New York Stock Exchange under the ticker symbol "T". As of June 12, 2026, AT&T has a market capitalization of $164 billion, reported revenues of $125.6 billion in 2025, and employs approximately 133,030 people.
AT&T operates as a diversified telecommunications provider, offering a wide array of products and services to residential, business, and government customers. Its core offerings include wireless voice and data services, broadband and fiber internet connectivity, fixed telephony, and enterprise solutions such as cloud services, cybersecurity, and network management. The company is recognized as the largest fiber internet provider in the United States and the nation's third-largest wireless carrier.
Based on available patent litigation data, AT&T's posture is that of an operating company that defends against patent infringement claims. The company has no tracked cases as a plaintiff and one tracked case as a defendant. This indicates it is not a non-practicing entity (NPE) or patent assertion entity (PAE).
AT&T is a defendant in the case Dr. Edwin A. Hernandez et al. v. Stingray Digital Group Inc. et al., filed on April 2, 2024, in the Florida Southern District Court.