Patent 9321386

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 (2)

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Specific litigation cases in our database that name US patent 9321386. 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

The following litigation involving US patent 9321386 is known as of April 26, 2026:

1. PTAB Case IPR2025-00168

2. PTAB Case IPR2025-00167

  • Plaintiff(s): Kubota North America Corporation and Kubota Tractor Corporation
  • Defendant(s): Vermeer Manufacturing Co (patent owner)
  • Jurisdiction: Patent Trial and Appeal Board (PTAB)
  • Case Number: IPR2025-00167
  • Filing Date: January 7, 2025
  • Status: Pending - Instituted

3. PTAB Case IPR2025-00169

  • Plaintiff(s): Kubota North America Corporation and Kubota Tractor Corporation
  • Defendant(s): Vermeer Manufacturing Co (patent owner)
  • Jurisdiction: Patent Trial and Appeal Board (PTAB)
  • Case Number: IPR2025-00169
  • Filing Date: January 7, 2025
  • Status: Pending - Instituted

4. US Case filed in Texas Northern District Court

  • Plaintiff(s): Not explicitly stated in the patent document.
  • Defendant(s): Not explicitly stated in the patent document.
  • Jurisdiction: Texas Northern District Court
  • Case Number: 4:24-cv-00799
  • Filing Date: Not explicitly stated in the patent document, but the case number suggests a 2024 filing.
  • Status: Litigation

5. US Case filed in Iowa Southern District Court

  • Plaintiff(s): Not explicitly stated in the patent document.
  • Defendant(s): Not explicitly stated in the patent document.
  • Jurisdiction: Iowa Southern District Court
  • Case Number: 4:17-cv-00076
  • Filing Date: Not explicitly stated in the patent document, but the case number suggests a 2017 filing.
  • Status: Litigation

6. First Worldwide Family Litigation

  • Plaintiff(s): Not explicitly stated in the patent document.
  • Defendant(s): Not explicitly stated in the patent document.
  • Jurisdiction: Not explicitly stated, but indicated as "First worldwide family litigation".
  • Case Number: Not explicitly stated in the patent document.
  • Filing Date: Not explicitly stated in the patent document.
  • Status: Litigation

Generated 7/1/2026, 12:46:31 AM