Term ends May 20, 2034 · Medium confidence
20-year base term ends May 20, 2034
Why Medium: A parent in the chain could not be resolved.
Held by Knowles Electronics, LLC
Filed Aug 12, 2015 as application 14/824,736 · Granted Jun 4, 2019
Base term plus 742 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2014
2034
Clock starts
May 20, 2014
May 20, 2014
Term ends
May 20, 2034
May 20, 2034
Granted
Jun 4, 2019
Jun 4, 2019
base term
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
742
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,113,263, US 9,712,923.
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.
29
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 742 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 3 maintenance fees is paid so far. Confidence: Medium. 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 May 20, 2014, when application 14/282,101, the earliest non-provisional in its chain, was filed (this one was filed Aug 12, 2015); a parent in its chain could not be resolved (the next row) | May 20, 2034 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +742 days, USPTO patent term adjustment record | May 31, 2036 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,113,263, US 9,712,923) | capped to May 20, 2034 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 20, 2034 | Medium confidence |
This family
| US 8,987,030 | Lapsed on the fee record 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 |
|---|---|---|---|
| Aug 12, 2015 Reel 36312, frame 157 | Furst, Claus Erdmann; Thomsen, Henrik; Deruginsky, Michael; Nandy, Dibyendu; Khamharn, Oddy Nopporn | 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
May 2034
Term ends May 20, 2034. Maintenance fees still fall due before then
Note
The 742 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,113,263, US 9,712,923.
Citations
27
later US patents cite this one
That is top 10% of utility patents granted in 2019 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.