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Ultrasound 3D Imaging System

US 7,874,991 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Jan 25, 2023 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Filed Jun 23, 2006 as application 11/474,098 · Granted Jan 25, 2011
Base term, 20 years from filing
Today
Lapsed Jan 25, 2023
2006 2026
Clock starts
Jun 23, 2006
No longer in force
Jan 25, 2023
Granted
Jan 25, 2011
Term would have run to
Jun 23, 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.
None
Terminal disclaimer
No disclaimer on this record.
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.
13
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 Jun 23, 2026: its 20-year base term, with no adjustment for prosecution delay. 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 Jun 23, 2006, when this application, 11/474,098, was filedJun 23, 2026High 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 events2 of 3 maintenance fees paidlapsed Jan 25, 2023High confidence
Computed term endThe steps above, in orderJan 25, 2023High confidence

This family

US 7,874,991this patent
Jan 2023
Jan 2023
Application PCT/US2007/014526PCT application
no patent term
no patent term
US 8,551,000In force
Dec 2027
Dec 2027
Application PCT/US2009/056995PCT application
no patent term
no patent term
US 10,080,544Term ended
Jun 2026
Jun 2026
Application PCT/US2010/050959PCT application
no patent term
no patent term
US 8,348,849Term ended
Jun 2026
Jun 2026
Application 13/498,043Abandoned
not computed
not computed
8 of 13 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
Sep 20, 2006
Reel 18293, frame 964
Chiang, Alice M.; Brodsky, Michael; He, Xingbai; Wong, William M.Teratech CorporationAssignment of Assignor's Interest
Oct 31, 2014
Reel 34085, frame 435
Chiang, Alice M.; Brodsky, Michael; He, Xingbai; Wong, William M.Teratech CorporationAssignment 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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