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Buffers for Display Acceleration

US 8,477,143 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Jul 2, 2025 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Held by Apple Inc.
Filed Mar 3, 2009 as application 12/397,334 · Granted Jul 2, 2013
Base term, 20 years from filing, plus 668 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 2, 2025
2009 2030
Clock starts
Mar 3, 2009
No longer in force
Jul 2, 2025
Granted
Jul 2, 2013
Term would have run to
Dec 31, 2030
base term patent term adjustment 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
668
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.
10
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 31, 2030: its 20-year base term plus 668 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 Mar 3, 2009, when this application, 12/397,334, was filedMar 3, 2029High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+668 days, USPTO patent term adjustment recordDec 31, 2030High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Jul 2, 2025High confidence
Computed term endThe steps above, in orderJul 2, 2025High confidence

This family

US 8,477,143this patent
Jul 2025
Jul 2025
Application PCT/US2009/001416PCT application
no patent term
no patent term
US 10,073,626In force
Aug 2033
Aug 2033
US 9,164,891In force
Sep 2033
Sep 2033
US 9,323,663In force
Aug 2033
Aug 2033
US 8,842,133Lapsed on the fee record
Sep 2026
Sep 2026
US 9,881,353Lapsed on the fee record
Jan 2026
Jan 2026
US 9,477,595Lapsed on the fee record
Oct 2024
Oct 2024
8 of 10 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
Mar 4, 2009
Reel 22342, frame 102
Harper, John; Dyke, Kenneth C.Apple 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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