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Multi-Path Mitigation in Rangefinding and Tracking Objects Using Reduced Attenuation RF Technology

US 8,648,722 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Feb 11, 2026 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Filed Sep 28, 2012 as application 13/630,134 · Granted Feb 11, 2014
Base term, 20 years from filing
Today
Lapsed Feb 11, 2026
2006 2026
Clock starts
Dec 14, 2006
No longer in force
Feb 11, 2026
Granted
Feb 11, 2014
Term would have run to
Dec 14, 2026
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,305,215, to Dec 14, 2026. The term already ends on or before that date, so the cap shortened nothing.
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.
36
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 Dec 14, 2026: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. Confidence: High. 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 Dec 14, 2006, when application 11/610,595, the earliest non-provisional in its chain, was filed (this one was filed Sep 28, 2012)Dec 14, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 8,305,215)resolves to Dec 14, 2026, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Feb 11, 2026High confidence
Computed term endThe steps above, in orderFeb 11, 2026High confidence

This family

US 7,561,048In force
Apr 2027
Apr 2027
Application PCT/US2006/062133PCT application
no patent term
no patent term
US 7,872,583In force
Jan 2027
Jan 2027
Application PCT/US2009/059472PCT application
no patent term
no patent term
US 7,969,311In force
Dec 2026
Dec 2026
US 8,305,215In force
Dec 2026
Dec 2026
US 9,507,007In force
Jan 2029
Jan 2029
US 8,648,722this patent
Feb 2026
Feb 2026
8 of 36 applications in this family shown, earliest filings first. 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
Nov 14, 2012
Reel 29298, frame 161
Markhovsky, Felix; Prevatt, TrumanInvisitrack, Inc.Assignment of Assignor's Interest
Apr 14, 2016
Reel 38439, frame 118
Invisitrack, Inc.Polte CorporationChange of Name
Aug 31, 2022
Reel 61362, frame 242
Polte CorporationQualcomm Technologies, Inc.Assignment of Assignor's Interest
Jan 3, 2025
Reel 69817, frame 688
Qualcomm Technologies, Inc.Qualcomm IncorporatedAssignment 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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