Term ends May 28, 2035 · High confidence
20-year base term ends Feb 21, 2034
Held by Datavault AI Inc.
Filed Feb 21, 2014 as application 14/186,852 · Granted Aug 1, 2017
Base term plus 461 days of patent term adjustment (USPTO delay)
Today
2014
2035
Clock starts
Feb 21, 2014
Feb 21, 2014
Term ends
May 28, 2035
May 28, 2035
Granted
Aug 1, 2017
Aug 1, 2017
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
461
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 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.
4
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 461 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Feb 21, 2014, when this application, 14/186,852, was filed | Feb 21, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +461 days, USPTO patent term adjustment record | May 28, 2035 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 28, 2035 | High confidence |
This family
| US 9,723,580 | this patent May 2035 | May 2035 |
| US 10,582,461 | In force May 2034 | May 2034 |
| US 10,602,468 | In force Feb 2034 | Feb 2034 |
3 of 4 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 |
|---|---|---|---|
| Feb 21, 2014 Reel 32273, frame 268 | Boehlke, Kenneth A. | Summit Semiconductor LLC | Assignment of Assignor's Interest |
| Jan 15, 2015 Reel 34726, frame 735 | Summit Semiconductor LLC, a Delaware Limited Liability Company | Meriwether Mezzanine Partners, L.P., a Delaware Limited Partnership | Security Interest |
| Jul 25, 2017 Reel 43089, frame 550 | Summit Semiconductor, LLC | Marcorp Financial, LLC, as Agent | Security Interest |
| Dec 7, 2017 Reel 44332, frame 489 | Summit Semiconductor, LLC | Alexander Capital, LP | Security Interest |
| Dec 12, 2018 Reel 48961, frame 420 | Summit Semiconductor, Inc. | Summit Wireless Technologies, Inc. | Change of Name |
| Jun 2, 2022 Reel 60256, frame 714 | Summit Wireless Technologies, Inc. | Wisa Technologies Inc. | Change of Name |
| Mar 13, 2025 Reel 70514, frame 711 | Wisa Technologies, Inc. | Datavault AI 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
May 2035
Term ends May 28, 2035. Maintenance fees still fall due before then
Note
The 461 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
37
later US patents cite this one
That is top 10% of utility patents granted in 2017 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.