Patent 7267820

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.

Cases on file (1)

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Specific litigation cases in our database that name US patent 7267820. The free-form analysis below may also discuss cases beyond this list.

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

✓ Generated

As a patent attorney, I have investigated the litigation history of US Patent 7267820. The patent's legal status is "Expired - Lifetime," having expired on November 3, 2022. This significantly reduces the likelihood of active infringement litigation in 2026.

Based on the provided information, known litigation involving US Patent 7267820 includes:

  • U.S. Supreme Court
    • Case Number: 19-430
    • Status: The legal status indicates "Family has litigation," with a specific mention of a US case filed in the U.S. Supreme Court, case 19-430. The outcome or current status in 2026 is not detailed in the provided information.
  • Court of Appeals for the Federal Circuit
    • Case Number: 17-2508
    • Status: The legal status indicates "Family has litigation," with a specific mention of a US case filed in the Court of Appeals for the Federal Circuit, case 17-2508. The outcome or current status in 2026 is not detailed in the provided information.
  • Massachusetts District Court
    • Case Number: 4:15-cv-40075
    • Status: The legal status indicates "Family has litigation," with a specific mention of a US case filed in Massachusetts District Court, case 4:15-cv-40075. The outcome or current status in 2026 is not detailed in the provided information.
  • Massachusetts District Court
    • Case Number: 1:15-cv-40075
    • Status: The legal status indicates "Family has litigation," with a specific mention of a US case filed in Massachusetts District Court, case 1:15-cv-40075. The outcome or current status in 2026 is not detailed in the provided information.

The provided information does not explicitly list the plaintiffs, defendants, or filing dates for these specific cases, beyond indicating that they are related to the patent family. My search for 2026 dockets in the CAFC for US patent 7267820 did not return any new active litigation cases for the specified year.

To obtain the complete details (plaintiff(s), defendant(s), filing dates, and definitive outcomes) for these past cases, a direct search using PACER (Public Access to Court Electronic Records) would be necessary. PACER provides electronic public access to federal court records, allowing users to search by specific court or a nationwide index. Access to case information costs $0.10 per page, with a cap of $3.00 for a single document. However, without a PACER account, I cannot perform this direct search to retrieve the full litigation details.

Generated 5/29/2026, 8:37:21 PM