The Patent Finder
US

Source Audio Identifiers for Digital Communications

US 8,565,397 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended Mar 30, 2025 · High confidence

USPTO later recorded it as expired for non-payment on Nov 24, 2025.

Filed Jan 4, 2010 as application 12/651,789 · Granted Oct 22, 2013
Base term plus 456 days of patent term adjustment (USPTO delay)
Today
20 years from filing
Term ended Mar 30, 2025
2003 2026
Clock starts
Dec 30, 2003
Term ended
Mar 30, 2025
Granted
Oct 22, 2013
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
456
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 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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.

This patent's term runs 456 days past its 20-year base term on 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 30, 2003, when application 10/747,694, the earliest non-provisional in its chain, was filed (this one was filed Jan 4, 2010)Dec 30, 2023High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+456 days, USPTO patent term adjustment recordMar 30, 2025High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 2 maintenance fees paidterm endedHigh confidence
USPTO status recordRecorded as expired for non-payment on Nov 24, 2025, after the term endedno changeHigh confidence
Computed term endThe steps above, in orderMar 30, 2025High confidence

This family

US 7,644,166In force
Dec 2026
Dec 2026
US 7,672,439In force
Dec 2028
Dec 2028
Application PCT/US2004/006334PCT application
no patent term
no patent term
US 7,693,944In force
Jul 2028
Jul 2028
US 8,565,397this patent
Mar 2025
Mar 2025
US 7,924,996Lapsed on the fee record
Apr 2023
Apr 2023
US 7,987,236Lapsed on the fee record
Jul 2023
Jul 2023
US 8,577,977Term ended
Dec 2023
Dec 2023
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
Jan 7, 2010
Reel 23749, frame 45
Appelman, Barry; Murphy, Stephen VaughanAmerica Online, Inc.Assignment of Assignor's Interest
Jan 7, 2010
Reel 23749, frame 87
Appelman, Barry; Murphy, Stephen VaughanAOL Inc.Assignment of Assignor's Interest
Jan 7, 2010
Reel 23749, frame 109
Appelman, Barry; Murphy, Stephen VaughanAOL LLCChange of Name
Feb 24, 2010
Reel 23984, frame 42
America Online, Inc.AOL LLCChange of Name
Feb 24, 2010
Reel 24002, frame 1
AOL LLCAOL Inc.Assignment of Assignor's Interest
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.

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