Patent 6640248

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 6640248. 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

Known litigation involving US patent 6640248 includes the following, based on information from Google Patents and Unified Patents:

  • Jurisdiction: Delaware District Court

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01672
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01671
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01670
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01668
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01669
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01652
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01654
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01650
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Delaware District Court

    • Case Number: 1:13-cv-01649
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Patent Trial and Appeal Board (PTAB)

    • Case Number: IPR2015-01873
    • Plaintiff(s): Petitioner(s) not specified in the provided information (Unified Patents is a common petitioner in IPRs).
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not Instituted - Merits. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Patent Trial and Appeal Board (PTAB)

    • Case Number: IPR2014-01331
    • Plaintiff(s): Petitioner(s) not specified in the provided information (Unified Patents is a common petitioner in IPRs).
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not Instituted - Merits. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Court of Appeals for the Federal Circuit (CAFC)

    • Case Number: 17-2434
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Court of Appeals for the Federal Circuit (CAFC)

    • Case Number: 17-2435
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Not specified in the provided information. [cite: https://patents.google.com/patent/US6640248/en]

  • Jurisdiction: Worldwide (Family Litigation)

    • Case Number: Not specifically provided, but linked to Darts-ip family ID 29253907.
    • Plaintiff(s): Not specified in the provided information.
    • Defendant(s): Not specified in the provided information.
    • Filing Date: Not specified in the provided information.
    • Outcome/Status: Described as "First worldwide family litigation filed." [cite: https://patents.google.com/patent/US6640248/en]

Generated 5/29/2026, 5:57:26 PM