Litigation summary

The provided patent text for US8115731B2 includes a "Family has litigation" section with direct links to Unified Patents portal entries. This is the most direct and reliable source for litigation information.

From the "Legal status" section and the "Family has litigation" section of the provided patent text (US8115731B2 - Google Patents):

1. PTAB case IPR2026-00004 filed (Settlement)

   • Jurisdiction: PTAB (Patent Trial and Appeal Board)
   • Case number: IPR2026-00004
   • Status/Outcome: Filed (Settlement)
   • Petitioner: "Unified Patents PTAB Data" by Unified Patents (implies Unified Patents is the petitioner, though it states "Petitioner: "Unified Patents PTAB Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License." this text seems to be part of the license information for the data itself rather than the petitioner name, but without other info I'll use it as the source for the petitioner. Given the context of Unified Patents, it is highly likely that Unified Patents is the petitioner in IPR cases).
   • Defendant(s): The patent owner at the time of filing, Malikie Innovations Ltd (current assignee) or a previous assignee. (The information does not explicitly state the defendant for this specific IPR, but typically the patent owner is the defendant in an IPR).
   • Filing Date: Not explicitly stated in the snippet, but the case number IPR2026-00004 suggests it was filed in 2026.

2. US case filed in Washington Western District Court

   • Jurisdiction: Washington Western District Court
   • Case number: 2:24-cv-01490
   • Filing date: Not explicitly stated in the snippet, but the case number 2:24-cv-01490 suggests it was filed in 2024.
   • Status/Outcome: Filed
   • Plaintiff(s): Not explicitly stated in the snippet.
   • Defendant(s): Not explicitly stated in the snippet.

3. First worldwide family litigation filed

   • Source: Darts-ip
   • Details: The link provided (https://patents.darts-ip.com/?family=[23174040](/patent/23174040)&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=[US8115731](/patent/US8115731)(B2)) leads to a Darts-ip page for the patent family, but the provided patent text does not extract specific case details like plaintiff, defendant, case number, or jurisdiction beyond "First worldwide family litigation filed." without further clicking into the link, I cannot provide these details. Therefore, I can only state that litigation exists in the family, but not specific details for US8115731 from this snippet.

Given the strict rule to not auto-correct patent numbers or technical identifiers, and to prioritize search results, I will compile the information directly from the provided patent text and the Unified Patents link if it offers more detail on the IPR. The current date is April 26, 2026.

Let's re-examine the original patent text for US8115731B2 directly:

Under "Legal status":
"Family has litigation"
"PTAB case IPR2026-00004 filed (Settlement)"
"Petitioner: "Unified Patents PTAB Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License." (This is metadata for the link, not the petitioner name)
The link is https://portal.unifiedpatents.com/ptab/case/IPR2026-00004

"US case filed in Washington Western District Court"
"Jurisdiction: Washington Western District Court"
"Case: 2:24-cv-01490"
"Source: District Court"
The link is https://portal.unifiedpatents.com/litigation/Washington%20Western%20District%20Court/case/2%3A24-cv-01490

I will use these direct snippets for the response. I cannot infer the actual petitioner/defendant from the licensing text for the IPR. I will explicitly state if the information is not provided.

For the PTAB case, the "Petitioner" line is confusing. "Unified Patents PTAB Data" is cited as the source, implying that Unified Patents provides the data, not necessarily that Unified Patents is the petitioner. However, Unified Patents' core business is to file IPRs (inter partes reviews) to challenge patents. So, it is highly probable that Unified Patents is the petitioner. The patent text states "Petitioner: "Unified Patents PTAB Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License." This reads as a data source attribution rather than a petitioner's name. I will state that the petitioner is not explicitly named from the provided text, but it is a PTAB case from Unified Patents.

For the US District Court case, the plaintiff and defendant are not specified in the provided text.

Let's look at the actual prompt again: "For each case provide: plaintiff(s), defendant(s), jurisdiction, case number, filing date, and outcome or current status."

I will extract exactly what is provided in the patent text for these fields and note where information is missing.Known litigation involving US patent 8115731 includes the following cases:

1. PTAB Case

   • Jurisdiction: PTAB (Patent Trial and Appeal Board)
   • Case Number: IPR2026-00004
   • Filing Date: Not explicitly stated, but the case number (IPR2026-00004) indicates it was filed in 2026.
   • Plaintiff(s): Not explicitly stated in the provided text, although it is identified as a "Unified Patents PTAB Data" entry, suggesting Unified Patents is involved.
   • Defendant(s): Not explicitly stated in the provided text (typically the patent owner).
   • Outcome/Current Status: Filed (Settlement)

2. US District Court Case

   • Jurisdiction: Washington Western District Court
   • Case Number: 2:24-cv-01490
   • Filing Date: Not explicitly stated, but the case number (2:24-cv-01490) indicates it was filed in 2024.
   • Plaintiff(s): Not explicitly stated in the provided text.
   • Defendant(s): Not explicitly stated in the provided text.
   • Outcome/Current Status: Filed

3. First Worldwide Family Litigation

   • Details: The patent family has first worldwide litigation filed, as sourced by Darts-ip. Specific case details such as jurisdiction, case number, plaintiff(s), defendant(s), and outcome for US patent 8115731 itself are not provided in the readily accessible text.