Lapsed Mar 24, 2019 on the fee record · High confidence
20-year base term ends Aug 13, 2030
First maintenance fee unpaid; grace period ended.
Held by Knowles Electronics, LLC
Filed Aug 13, 2010 as application 12/856,101 · Granted Mar 24, 2015
Base term, 20 years from filing, plus 77 days of patent term adjustment (USPTO delay)
Today
Lapsed Mar 24, 2019
2010
2030
Clock starts
Aug 13, 2010
Aug 13, 2010
No longer in force
Mar 24, 2019
Mar 24, 2019
Granted
Mar 24, 2015
Mar 24, 2015
Term would have run to
Oct 29, 2030
Oct 29, 2030
base term
patent term adjustment
after the term ends
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
77
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
29
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 Oct 29, 2030: its 20-year base term plus 77 days of term adjustment for 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 13, 2010, when this application, 12/856,101, was filed | Aug 13, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +77 days, USPTO patent term adjustment record | Oct 29, 2030 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Mar 24, 2019 | High confidence |
| Computed term end | The steps above, in order | Mar 24, 2019 | High confidence |
This family
| US 8,987,030 | this patent Mar 2019 | Mar 2019 |
| Application 13/658,337 | Abandoned not computed | not computed |
| US 9,712,923 | In force May 2034 | May 2034 |
| Application PCT/US2014/053235 | PCT application no patent term | no patent term |
| US 9,502,028 | In force Oct 2034 | Oct 2034 |
| US 10,028,054 | Lapsed on the fee record Jul 2026 | Jul 2026 |
| US 9,113,263 | In force May 2034 | May 2034 |
| US 9,076,447 | In force Oct 2034 | Oct 2034 |
8 of 29 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.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Oct 15, 2010 Reel 25145, frame 850 | Loeppert, Peter V.; Czech, Denise P.; Grunert, Lawrence A.; Friel, Kurt B.; Wang, Qing | Knowles Electronics, LLC | Assignment of Assignor's 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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Alerts on its grants, lapses and transfers.
What's changing
Note
The 77 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
8
later US patents cite this one
That is above the median of utility patents granted in 2015 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.