Litigation summary

As of May 13, 2026, U.S. Patent No. 8,631,102, owned by Headwater Research LLC, has been asserted in multiple patent infringement lawsuits against major telecommunications companies. Headwater Research LLC has been actively litigating this patent as part of a larger campaign involving a family of patents related to mobile data management and security.

Here is a summary of the known litigation involving U.S. Patent No. 8,631,102:

Litigation Against Major Wireless Carriers:

Headwater Research LLC has filed a series of lawsuits against AT&T, T-Mobile, and Verizon, with some cases involving the '102 patent.

• Headwater Research LLC v. AT&T, Inc.

  • Plaintiff: Headwater Research LLC
  • Defendant: AT&T, Inc.
  • Jurisdiction: U.S. District Court for the Eastern District of Texas
  • Case Number: 2:25-cv-00428
  • Filing Date: April 2025
  • Status/Outcome: The case was dismissed without prejudice on September 29, 2025, following a joint stipulation of dismissal. This type of dismissal often indicates a settlement was reached between the parties, and it allows Headwater to potentially re-file the claims in the future. This case, along with others filed around the same time against other major carriers, suggests a possible portfolio-wide licensing agreement. The '102 patent was one of three patents asserted in this case, all related to mobile data management and device policy enforcement.

• Headwater Research LLC v. Deutsche Telekom (Sprint, T-Mobile)

  • Plaintiff: Headwater Research LLC
  • Defendant: Deutsche Telekom (Sprint, T-Mobile)
  • Jurisdiction: U.S. District Court for the Eastern District of Texas
  • Case Number: 2:25-cv-00359
  • Filing Date: April 2025
  • Status/Outcome: This case was part of a series of lawsuits filed by Headwater Research against major wireless carriers. While specific details of the resolution of this case are not readily available in the provided search results, it is part of the broader litigation campaign that included the settled case against AT&T involving the '102 patent. It is likely this case was also settled.

• Headwater Research LLC v. Verizon (Verizon Wireless)

  • Plaintiff: Headwater Research LLC
  • Defendant: Verizon (Verizon Wireless)
  • Jurisdiction: U.S. District Court for the Eastern District of Texas
  • Case Number: 2:25-cv-00391
  • Filing Date: April 2025
  • Status/Outcome: This case was also part of the April 2025 trio of lawsuits. A separate case filed by Headwater against Verizon resulted in a $175 million jury verdict for Headwater in July 2025, although it is not specified if the '102 patent was at issue in that particular trial.

It is important to note that Headwater Research LLC has filed multiple lawsuits against these carriers, with some earlier cases in 2023 and additional cases filed after the ones mentioned above. The litigation landscape involving this patent and its owner is active and complex.