Term ends Jan 19, 2030 · High confidence
20-year base term ends Jun 22, 2029
Held by Datavault AI Inc.
Filed Jun 22, 2009 as application 12/489,322 · Granted Jun 12, 2012
Base term plus 211 days of patent term adjustment (USPTO delay)
Today
2009
2030
Clock starts
Jun 22, 2009
Jun 22, 2009
Term ends
Jan 19, 2030
Jan 19, 2030
Granted
Jun 12, 2012
Jun 12, 2012
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
211
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
This patent's term runs 211 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jun 22, 2009, when this application, 12/489,322, was filed | Jun 22, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +211 days, USPTO patent term adjustment record | Jan 19, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 19, 2030 | High confidence |
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 |
|---|---|---|---|
| Jul 29, 2009 Reel 23020, frame 390 | Hudson, Michael D; McArthur, Kelly M; Liebelt, Richard S; Klinker, John W | Focus Enhancements, Inc. | Assignment of Assignor's Interest |
| Dec 7, 2010 Reel 25486, frame 908 | Focus Enhancements, Inc. | 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
Jan 2030
Term ends Jan 19, 2030. No further fees fall due before then
Note
The 211 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
66
later US patents cite this one
That is top 10% of utility patents granted in 2012 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.