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Low Complexity Channel Estimation for Orthogonal Frequency Division Modulation Systems

US 7,952,990 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended no later than Aug 21, 2023 · Medium confidence

Filed Dec 1, 2009 as application 12/628,912 · Granted May 31, 2011
Base term, 20 years from filing
Today
20 years from filing
Ended no later than Aug 21, 2023
2003 2026
Clock starts
Aug 21, 2003
Ended no later than
Aug 21, 2023
Granted
May 31, 2011
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.
3 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.

This patent's term is 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. All three maintenance fees were paid, so no fee lapse ended it. 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 Aug 21, 2003, when application 10/647,163, the earliest non-provisional in its chain, was filed (this one was filed Dec 1, 2009)Aug 21, 2023High 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 events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderno later than Aug 21, 2023Medium confidence

This family

US 7,639,600In force
Nov 2026
Nov 2026
US 7,952,990this patent
no later than Aug 2023
no later than 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
Dec 18, 2019
Reel 51536, frame 1
Marvell International Ltd.NXP USA, Inc.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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