Patent 8239358
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 (1)
Group view →Specific litigation cases in our database that name US patent 8239358. The free-form analysis below may also discuss cases beyond this list.
- Semantic Engines LLC v. Microsoft Corpfiled Apr 23, 20262:26-cv-00339Texas Eastern District CourtOpen
Defendants: Microsoft Corp
Other patents asserted: 9218414, 10783192
The lawsuit targets Microsoft’s AI services, Bing Chat and Microsoft Copilot, as well as the underlying Prometheus technology.
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
A search for litigation involving US patent 8239358 revealed the following:
As of May 31, 2026, there are no specific results from CAFC dockets or general patent litigation databases explicitly listing ongoing or past litigation for US Patent 8239358 with case numbers, filing dates, and outcomes. While the Google Patents "Legal Status" section indicates "Family has litigation" and mentions "US case filed in Texas Eastern District Court" for the patent family, specific details for US8239358 were not immediately available in the search results provided.
To obtain comprehensive information regarding any potential litigation, it would be necessary to conduct a more in-depth search using PACER (Public Access to Court Electronic Records) or by contacting the U.S. Court of Appeals for the Federal Circuit directly, especially for cases filed before March 1, 2012, as these records are stored with the National Archives and Records Administration.
Generated 5/31/2026, 12:46:36 AM