AT&T Enterprises, LLC, formerly known as AT&T Corp., is a subsidiary of AT&T Inc., an American multinational telecommunications company. While its ultimate parent, AT&T Inc., is headquartered at Whitacre Tower in Downtown Dallas, Texas, AT&T Enterprises, LLC itself lists its headquarters address in Dallas, Texas. AT&T Inc. is a publicly traded company on the New York Stock Exchange under the ticker symbol "T". As of 2025, AT&T Inc. reported revenues of $125.6 billion and had approximately 133,030 employees worldwide. AT&T Enterprises, LLC manages IP addresses for organizations including AT&T Corp. and AT&T Global Network Services, LLC. It also functions as a federal contractor, primarily providing wired and wireless telecommunications services.
The broader AT&T Inc. offers a wide array of telecommunications services, including mobile telephony, fixed telephony, broadband internet (with a significant focus on 5G wireless and fiber internet), internet television, and IoT services. It is recognized as the world's third-largest telecommunications company by revenue and the third-largest wireless carrier in the United States.
AT&T Enterprises, LLC primarily exhibits a defensive patent litigation posture, consistent with an operating company being targeted in intellectual property disputes. The company has been involved in one tracked case as a defendant and zero as a plaintiff. Its single tracked case, Dr. Edwin A. Hernandez et al. v. Stingray Group Inc. f/k/a Stingray Digital Group, Inc. et al., was filed in the Southern District of Florida in 2024.
In the notable case Dr. Edwin A. Hernandez et al. v. Stingray Group Inc. f/k/a Stingray Digital Group, Inc. et al., AT&T Enterprises, LLC is named as a defendant alongside Stingray Group Inc., Mood Media LLC, and Millicom International Services, LLC. The lawsuit, initiated in April 2024, alleges misappropriation of trade secrets and patent infringement related to music distribution and streaming platforms, specifically concerning technologies used in UbiquiCAST OSE2 servers. AT&T Enterprises, LLC (as well as AT&T Corp. and AT&T Inc.) is frequently named in patent infringement lawsuits directed at the broader AT&T telecommunications operations.