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Spectrum Management System for Municipal Spectrum Using Guided Cognitive Radio

US 8,000,718 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Aug 16, 2023 on the fee record · Medium confidence

Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.

Third maintenance fee unpaid; grace period ended.

Held by AT&T Corp.
Filed Oct 23, 2009 as application 12/604,850 · Granted Aug 16, 2011
Base term, 20 years from filing
Today
Lapsed Aug 16, 2023
2005 2026
Clock starts
Oct 14, 2005
No longer in force
Aug 16, 2023
Granted
Aug 16, 2011
Term would have run to
Oct 14, 2025
base term after the term ends fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
2 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
2
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Oct 14, 2025: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Medium. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Oct 14, 2005, when application 11/250,988, the earliest non-provisional in its chain, was filed (this one was filed Oct 23, 2009)Oct 14, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer on file (approved), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Aug 16, 2023High confidence
Computed term endThe steps above, in orderAug 16, 2023Medium confidence

This family

US 7,627,326In force
Dec 2026
Dec 2026
US 8,000,718this patent
Aug 2023
Aug 2023
The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Oct 26, 2009
Reel 23428, frame 803
Miller Ii, RobertAT&T Corp.Assignment of Assignor's Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

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