The Patent Finder
US

Stationary Target Detection by Exploiting Changes in Background Model

US 8,948,458 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Motorola, Inc., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Sep 4, 2028 · High confidence

Filed Aug 2, 2013 as application 13/957,636 · Granted Feb 3, 2015
Base term, 20 years from filing
Today
20 years from filing
2008 2028
Clock starts
Sep 4, 2008
Term ends
Sep 4, 2028
Granted
Feb 3, 2015
base term 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.
None
Terminal disclaimer
No disclaimer on this record.
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.
6
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. All three maintenance fees are recorded paid; no more fees are due. 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 Sep 4, 2008, when application 12/204,562, the earliest non-provisional in its chain, was filed (this one was filed Aug 2, 2013)Sep 4, 2028High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderSep 4, 2028High confidence

This family

US 8,401,229In force
Jan 2032
Jan 2032
US 8,526,678In force
Sep 2028
Sep 2028
US 8,948,458this patent
Sep 2028
Sep 2028
US 9,792,503In force
Sep 2028
Sep 2028
US 10,586,113In force
Mar 2029
Mar 2029
US 11,170,225In force
Dec 2028
Dec 2028
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
Aug 5, 2013
Reel 30938, frame 413
Hassan-shafique, Khurram; Venetianer, Peter L.; Yu, Li; Liu, HaiyingObjectvideo, Inc.Assignment of Assignor's Interest
Dec 19, 2014
Reel 34553, frame 62
Objectvideo, Inc.Avigilon Fortress CorporationAssignment of Assignor's Interest
Apr 8, 2015
Reel 35387, frame 569
Avigilon Fortress CorporationHSBC Bank CanadaSecurity Interest
Aug 21, 2018
Reel 47032, frame 63
HSBC Bank CanadaAvigilon Fortress CorporationRelease of Security Interest
Oct 23, 2022
Reel 61746, frame 897
Avigilon Fortress CorporationMotorola Solutions, Inc.Nunc Pro Tunc Assignment

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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited