Patent 11284475
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
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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.
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Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
Analysis of Litigation and Post-Grant Proceedings for U.S. Patent 11,284,475
As of May 1, 2026, U.S. Patent 11,284,475 ('475 patent) has not been directly asserted in district court litigation. However, it is closely related to a broader litigation campaign by its assignee, Wilus Institute of Standards and Technology, Inc. (Wilus), concerning Wi-Fi 6 (IEEE 802.11ax) standard-essential patents (SEPs). Furthermore, the '475 patent is currently the subject of post-grant validity challenges at the USPTO.
District Court Litigation Context
Wilus began a significant litigation campaign in the Eastern District of Texas in October 2024, targeting manufacturers of Wi-Fi 6-compliant devices. The initial lawsuits were filed against ASUSTek, HP, and Samsung. While these suits asserted other Wilus patents, the '475 patent is frequently described as being "related to patents being used in litigation."
The litigation campaign is part of a broader effort involving the Sisvel Wi-Fi 6 patent pool, which licenses a portfolio of patents, including those from Wilus, that are declared essential to the 802.11ax standard. The dispute with HP was resolved in November 2025 after a court-ordered mediation resulted in HP taking a license to the entire Sisvel Wi-Fi 6 pool. Litigation involving other parties, such as Samsung and ASUSTek, appears to be ongoing, with disputes over Fair, Reasonable, and Non-Discriminatory (FRAND) licensing obligations.
Post-Grant Proceedings for Patent 11,284,475
While not asserted in court, the '475 patent has been proactively challenged at the U.S. Patent and Trademark Office (USPTO).
- Proceeding Type: Ex Parte Reexamination
- Requestor: Unified Patents, LLC
- Filing Date: February 3, 2026
- Status: On March 10, 2026, the Central Reexamination Unit (CRU) granted the request, finding "substantial new questions of patentability" for the challenged claims of the '475 patent. The reexamination is currently pending.
Unified Patents filed this challenge as part of its efforts to address patents in the Wi-Fi 6 SEP space. The granting of the reexamination request indicates that the USPTO believes there is a reasonable likelihood that the challenger's arguments could lead to the cancellation or amendment of one or more claims of the patent.
Generated 5/1/2026, 6:07:10 PM