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US 8,341,236 In force
OverviewFamilyAssignmentsSources & methods

Term ends Feb 26, 2031 · High confidence

Filed Nov 2, 2010 as application 12/938,245 · Granted Dec 25, 2012
Base term plus 116 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2010 2031
Clock starts
Nov 2, 2010
Term ends
Feb 26, 2031
Granted
Dec 25, 2012
base term patent term adjustment 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
116
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
28
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 runs 116 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Nov 2, 2010, when this application, 12/938,245, was filedNov 2, 2030High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+116 days, USPTO patent term adjustment recordFeb 26, 2031High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderFeb 26, 2031High confidence

This family

US 8,341,236this patent
Feb 2031
Feb 2031
US 8,458,774In force
Nov 2031
Nov 2031
US 8,549,601In force
Mar 2031
Mar 2031
US 8,806,592In force
Feb 2032
Feb 2032
US 8,789,153In force
Apr 2032
Apr 2032
Application PCT/US2011/022482PCT application
no patent term
no patent term
Application PCT/US2011/022486PCT application
no patent term
no patent term
Application PCT/US2011/023525PCT application
no patent term
no patent term
8 of 28 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
Feb 18, 2016
Reel 37764, frame 522
Ganesan, Ravi3PTALK Inc.Assignment of Assignor's Interest
Apr 1, 2016
Reel 38169, frame 1
3PTALK Inc.Early Warning Services, LLCAssignment of Assignor's Interest
Jun 18, 2020
Reel 52984, frame 61
Payfone, Inc.Jpmorgan Chase Bank, N.a.Confirmatory Grant of Security Interest in Patents
Jul 8, 2020
Reel 53148, frame 191
Early Warning Services, LLCPayfone, Inc.Assignment of Assignor's Interest
May 28, 2024
Reel 67556, frame 31
Payfone, Inc.Prove Identity, 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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited