Patent 8441721
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
Active provider: Google · gemini-2.5-flash
No PTAB proceedings on file. This patent has not been challenged through Inter Partes Review, Post-Grant Review, or Covered Business Method review at the USPTO. The absence is itself a signal — well-asserted patents eventually attract IPRs.
Cases on file (2)
Group view →Specific litigation cases in our database that name US patent 8441721. The free-form analysis below may also discuss cases beyond this list.
- Cisco Systems, Inc. v. WSOU Investments LLCfiled Dec 2, 2024IPR2025-00241Patent Trial and Appeal Board (PTAB)Settled
Defendants: WSOU Investments LLC
- 2:24-cv-00332Texas Eastern District CourtLitigation
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
As of April 26, 2026, there is known litigation involving US patent 8441721.
Here are the details of the known cases:
-
- Plaintiff(s): Unified Patents PTAB Data (Petitioner: Cisco Systems, Inc.)
- Defendant(s): WSOU Investments LLC (as assignee of US8441721B2)
- Jurisdiction: Patent Trial and Appeal Board (PTAB)
- Case Number: IPR2025-00241
- Filing Date: January 14, 2025 (Effective date: December 2, 2024)
- Outcome or Current Status: Settlement
Case 2 (District Court Litigation)
- Plaintiff(s): WSOU Investments LLC (as current assignee of US8441721B2)
- Defendant(s): Not explicitly stated in the provided snippet, but implied to be related to the "Texas Eastern District Court"
- Jurisdiction: Texas Eastern District Court
- Case Number: 2:24-cv-00332
- Filing Date: Not explicitly stated, but the case was "filed"
- Outcome or Current Status: Active litigation
Generated 5/29/2026, 8:55:04 PM