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US 8,577,975 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended Apr 20, 2024 · High confidence

Filed Jan 7, 2011 as application 12/986,941 · Granted Nov 5, 2013
Base term, 20 years from filing
Today
20 years from filing
Term ended Apr 20, 2024
2004 2026
Clock starts
Apr 20, 2004
Term ended
Apr 20, 2024
Granted
Nov 5, 2013
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 7,383,308, to Apr 20, 2024. 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.
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. 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 were paid, so no fee lapse ended it. 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 Apr 20, 2004, when application 10/827,420, the earliest non-provisional in its chain, was filed (this one was filed Jan 7, 2011)Apr 20, 2024High 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 7,383,308)resolves to Apr 20, 2024, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderApr 20, 2024High confidence

This family

US 7,383,308In force
Dec 2026
Dec 2026
US 7,599,990Term ended
Apr 2024
Apr 2024
US 7,870,215Term ended
Apr 2024
Apr 2024
US 8,577,975this patent
Apr 2024
Apr 2024
Application 13/620,953Abandoned
not computed
not computed
US 9,621,377Term ended
Jul 2024
Jul 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
Jan 13, 2011
Reel 25629, frame 177
Groves, Blake; Renner, W. KarlAmerica Online, Inc.Assignment of Assignor's Interest
Jan 13, 2011
Reel 25629, frame 339
AOL LLCAOL Inc.Assignment of Assignor's Interest
Jan 13, 2011
Reel 25630, frame 116
America Online, Inc.AOL LLCChange of Name
Jun 28, 2012
Reel 28463, frame 125
AOL Inc.Facebook, Inc.Assignment of Assignor's Interest
Dec 20, 2021
Reel 58961, frame 436
Facebook, Inc.Meta Platforms, Inc.Change 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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