Patent 9232403
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
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PTAB activity (1)
AIA trial proceedings — IPR, PGR, CBM — filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced directly from the PTAB Trial API.
- IPR2026-00203IPRfiled Jan 23, 2026vs. Google LLC et al.Pending
Cached for 24 hours. Status strings are sourced verbatim from the PTAB API; the colored badge is our heuristic classification.
Cases on file (2)
Group view →Specific litigation cases in our database that name US patent 9232403. The free-form analysis below may also discuss cases beyond this list.
- Headwater Research LLC v. AT&T Services, Inc. et al.filed Jul 11, 20252:25-cv-00711Eastern District of Texasactive
Defendants: AT&T Services, Inc., AT&T Enterprises, LLC, and AT&T Mobility LLC
- 2:25-cv-00709Eastern District of Texasterminated Sep 26, 2025Dismissed without prejudice
Defendants: Cellco Partnership, d/b/a Verizon Wireless and Verizon Corporate Services Group Inc.
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
US patent 9232403 has been involved in the following known litigation:
Plaintiff(s): Headwater Research LLC
- Defendant(s): AT&T Services, Inc., AT&T Enterprises, LLC, AT&T Mobility LLC
- Jurisdiction: Eastern District of Texas (E.D. Tex.)
- Case Number: 2:25-cv-00711
- Filing Date: July 11, 2025
- Outcome or Current Status: The current status is not explicitly detailed in the provided snippets. However, the filing date of July 11, 2025, implies this case was recently filed, given the current date of April 26, 2026.
Plaintiff(s): Headwater Research LLC
- Defendant(s): [Cellco Partnership, d/b/a Verizon Wireless](/litigations/by-defendant/Cellco%20Partnership%2C%20d%2Fb%2Fa%20Verizon%20Wireless), Verizon Corporate Services Group Inc.
- Jurisdiction: Eastern District of Texas (E.D. Tex.)
- Case Number: 2:25-cv-00709
- Filing Date: July 11, 2025
- Outcome or Current Status: This case was dismissed without prejudice on September 26, 2025, just 77 days after its filing. The outcome is reported as a "Defendant Win – Dismissed Without Prejudice," indicating a procedural resolution, likely a voluntary dismissal by the plaintiff.
Generated 5/28/2026, 12:49:40 PM