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US 8,577,863 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Feb 24, 2026 (Western Alliance Bank).

Term ends Oct 6, 2029 · Medium confidence

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 8,671,089), so the cap could be lower.

Filed Feb 9, 2012 as application 13/369,916 · Granted Nov 5, 2013
Base term, 20 years from filing
Today
20 years from filing
2009 2029
Clock starts
Oct 6, 2009
Term ends
Oct 6, 2029
Granted
Nov 5, 2013
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,671,089, to Oct 6, 2029. The term already ends on or before that date, so the cap shortened nothing.
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.
4
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. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 Oct 6, 2009, when application 12/574,069, the earliest non-provisional in its chain, was filed (this one was filed Feb 9, 2012)Oct 6, 2029High 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 8,671,089)resolves to Oct 6, 2029, no earlier than this term, so no changeMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderOct 6, 2029Medium confidence

This family

US 8,671,089In force
no later than Feb 2030
no later than Feb 2030
Application PCT/US2010/049704PCT application
no patent term
no patent term
US 8,577,863this patent
Oct 2029
Oct 2029
US 9,262,770Lapsed on the fee record
Feb 2024
Feb 2024
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
Feb 9, 2012
Reel 27681, frame 95
Yu, Jimmy; Park, Lemuel S.; Yip, RollandBrightEdge TechnologiesAssignment of Assignor's Interest
Feb 9, 2012
Reel 27681, frame 140
Yu, Jimmy; Park, Lemuel S.; Yip, RollandBrightEdge Technologies Inc.Nunc Pro Tunc Assignment
Nov 25, 2024
Reel 69399, frame 371
BrightEdge Technologies, Inc.Stifel BankSecurity Interest
Feb 6, 2026
Reel 74728, frame 160
Stifel BankBrightEdge Technologies, Inc.Reassignment and Release of Security Interest
Feb 24, 2026
Reel 73881, frame 147
BrightEdge Technologies, Inc.Western Alliance BankSecurity 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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