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Printhead Maintenance Assembly for an Inkjet Printer

US 7,771,008 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Aug 10, 2022 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Filed Aug 20, 2008 as application 12/194,539 · Granted Aug 10, 2010
Base term, 20 years from filing, plus 127 days of patent term adjustment (USPTO delay)
Today
Lapsed Aug 10, 2022
2005 2026
Clock starts
Dec 5, 2005
No longer in force
Aug 10, 2022
Granted
Aug 10, 2010
Term would have run to
Apr 11, 2026
base term patent term adjustment after the term ends fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
127
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
3
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 Apr 11, 2026: its 20-year base term plus 127 days of term 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 Dec 5, 2005, when application 11/293,793, the earliest non-provisional in its chain, was filed (this one was filed Aug 20, 2008)Dec 5, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+127 days, USPTO patent term adjustment recordApr 11, 2026High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Aug 10, 2022High confidence
Computed term endThe steps above, in orderAug 10, 2022High confidence

This family

US 7,431,440In force
no later than Dec 2026
no later than Dec 2026
US 7,771,008this patent
Aug 2022
Aug 2022
US 8,360,548Lapsed on the fee record
Jan 2021
Jan 2021
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 20, 2008
Reel 21412, frame 416
Silverbrook, Kia; Berry, Norman Micheal; Nakazawa, Akira; Mackey, Paul Ian; Jackson, Garry RaymondSilverbrook Research Pty Ltd.Assignment of Assignor's Interest
Jul 9, 2012
Reel 28516, frame 159
Silverbrook Research Pty. Limited and Clamate Pty LimitedZamtec LimitedAssignment of Assignor's Interest
Jun 25, 2014
Reel 33244, frame 276
Zamtec LimitedMemjet Technology LimitedChange of Name

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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