Patent 6044382

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 (13)

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Specific litigation cases in our database that name US patent 6044382. 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.

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Litigation History of U.S. Patent 6,044,382

As of May 11, 2026, U.S. Patent 6,044,382, assigned to Cyberfone Systems, LLC, has been asserted in numerous patent infringement lawsuits. The patent was the subject of a large-scale litigation campaign that commenced in 2011 and saw another wave of filings in 2014. The plaintiff in all known cases is Cyberfone Systems, LLC.

The litigation campaign involved dozens of defendants across the technology, retail, banking, and airline industries. Most cases were filed in the U.S. District Court for the District of Delaware and the U.S. District Court for the Eastern District of Texas. Many of these cases were consolidated for pretrial proceedings.

Below is a list of known litigation involving this patent. Given the number of defendants and the age of the cases, most have been terminated, often through settlement or dismissal. An appeal in a related case against CNN Interactive Group resulted in a Federal Circuit decision affirming the invalidity of a related patent's claims under 35 U.S.C. § 101 for claiming an abstract idea.

Delaware District Court Litigation (2011 Campaign)

Defendant(s) Jurisdiction Case Number Filing Date Outcome / Status
AT&T Inc. & AT&T Mobility LLC D. Del. 1:11-cv-00827 2011-09-14 Terminated
American Airlines, Inc. D. Del. 1:11-cv-00828 2011-09-14 Terminated
Bank of America Corp. et al. D. Del. 1:11-cv-00830 2011-09-14 Terminated
Wells Fargo & Company et al. D. Del. 1:11-cv-00831 2011-09-14 Terminated
United Air Lines, Inc. et al. D. Del. 1:11-cv-00833 2011-09-14 Terminated
Southwest Airlines Co. D. Del. 1:11-cv-00834 2011-09-14 Terminated
E*TRADE Financial Corporation D. Del. 1:11-cv-00835 2011-09-14 Terminated

Eastern District of Texas Litigation (2014 Campaign)

Defendant(s) Jurisdiction Case Number Filing Date Outcome / Status
Capital One Financial Corporation E.D. Tex. 2:14-cv-00109 2014-02-18 Terminated
Citigroup Inc. E.D. Tex. 2:14-cv-00110 2014-02-18 Terminated
Discover Financial Services, Inc. E.D. Tex. 2:14-cv-00111 2014-02-18 Terminated
The Charles Schwab Corporation E.D. Tex. 2:14-cv-00112 2014-02-18 Terminated

Delaware District Court Litigation (2014 Campaign)

Defendant(s) Jurisdiction Case Number Filing Date Outcome / Status
The PNC Financial Services Group, Inc. D. Del. 1:14-cv-01489 2014-12-10 Terminated
U.S. Bancorp D. Del. 1:14-cv-01490 2014-12-10 Terminated

Disclaimer: This list is based on publicly available litigation data and may not be exhaustive. The outcome "Terminated" indicates the case is closed, which may be due to settlement, dismissal, or judgment. Specific details of termination are found in court records for each case.

Generated 5/11/2026, 12:17:08 AM