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Acoustic Transducer

US 9,843,868 Lapsed on the fee record
OverviewFamilySources & methods

Lapsed Dec 12, 2025 on the fee record · High confidence

Second maintenance fee unpaid; grace period ended.

Filed Feb 5, 2016 as application 15/017,514 · Granted Dec 12, 2017
Base term, 20 years from filing
Today
Lapsed Dec 12, 2025
2011 2031
Clock starts
Dec 22, 2011
No longer in force
Dec 12, 2025
Granted
Dec 12, 2017
Term would have run to
Dec 22, 2031
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 9,363,608, US 9,380,380, US 9,936,305, to Dec 22, 2031. The term already ends on or before that date, so the cap shortened nothing.
1 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.
7
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 22, 2031: 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. 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 22, 2011, when application PCT/JP2011/079843, the earliest non-provisional in its chain, was filed (this one was filed Feb 5, 2016)Dec 22, 2031High 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 9,363,608, US 9,380,380, US 9,936,305)resolves to Dec 22, 2031, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 3 maintenance fees paidlapsed Dec 12, 2025High confidence
Computed term endThe steps above, in orderDec 12, 2025High confidence

This family

US 9,363,608In force
Dec 2031
Dec 2031
US 9,380,380In force
Oct 2032
Oct 2032
US 9,936,305Lapsed on the fee record
Apr 2026
Apr 2026
US 9,843,868this patent
Dec 2025
Dec 2025
US 10,405,107In force
Dec 2031
Dec 2031
US 10,484,798In force
Dec 2031
Dec 2031
6 of 7 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

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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