Term ends May 26, 2034 · Medium confidence
20-year base term ends Feb 21, 2034
Why Medium: A parent in the chain could not be resolved.
Held by Datavault AI Inc.
Filed Jan 5, 2018 as application 15/863,637 · Granted Mar 3, 2020
Base term plus 94 days of patent term adjustment (USPTO delay)
Today
2014
2034
Clock starts
Feb 21, 2014
Feb 21, 2014
Term ends
May 26, 2034
May 26, 2034
Granted
Mar 3, 2020
Mar 3, 2020
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
94
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,723,580, to May 26, 2034. 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.
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 94 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Feb 21, 2014, when application 14/186,852, the earliest non-provisional in its chain, was filed (this one was filed Jan 5, 2018); a parent in its chain could not be resolved (the next row) | Feb 21, 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 | +94 days, USPTO patent term adjustment record | May 26, 2034 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,723,580) | resolves to May 26, 2034, no earlier than this term, so no change | 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 26, 2034 | Medium confidence |
This family
| US 9,723,580 | In force May 2035 | May 2035 |
| US 10,582,461 | this patent 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 14, 2018 Reel 44922, frame 546 | Boehlke, Kenneth A | Summit Semiconductor, LLC | Assignment of Assignor's 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.
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Alerts on its grants, lapses and transfers.
What's changing
May 2034
Term ends May 26, 2034. Maintenance fees still fall due before then
Note
The 94 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,723,580, ends no earlier than this term, so it caps nothing.
Citations
5
later US patents cite this one
That is above the median of utility patents granted in 2020 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.