Collateral for a security interest recorded Jul 21, 2025 (Ascent Partners Fund, LLC).
Term ends Mar 13, 2034 · High confidence
20-year base term ends Mar 13, 2034
Held by Profusa, Inc.
Filed Dec 8, 2020 as application 17/114,698 · Granted Jul 30, 2024
Base term plus 448 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2014
2034
Clock starts
Mar 13, 2014
Mar 13, 2014
Term ends
Mar 13, 2034
Mar 13, 2034
Granted
Jul 30, 2024
Jul 30, 2024
base term
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
448
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 10,383,557, US 10,874,337, US 9,650,566.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
6
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 448 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 of 2 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 Mar 13, 2014, when application 14/209,252, the earliest non-provisional in its chain, was filed (this one was filed Dec 8, 2020) | Mar 13, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +448 days, USPTO patent term adjustment record | Jun 4, 2035 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,383,557, US 10,874,337, US 9,650,566) | capped to Mar 13, 2034 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 13, 2034 | High confidence |
This family
| US 9,375,494 | In force Mar 2034 | Mar 2034 |
| US 9,867,560 | In force Mar 2034 | Mar 2034 |
| US 9,650,566 | Lapsed on the fee record May 2025 | May 2025 |
| US 10,383,557 | In force Mar 2034 | Mar 2034 |
| US 10,874,337 | Lapsed on the fee record Dec 2024 | Dec 2024 |
| US 12,048,535 | this patent Mar 2034 | Mar 2034 |
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 |
|---|---|---|---|
| Dec 9, 2020 Reel 54593, frame 706 | Gamsey, Soya; Wisniewski, Natalie; Helton, Kristen; McMillan, William | Profusa, Inc. | Assignment of Assignor's Interest |
| Jul 21, 2025 Reel 71773, frame 828 | Profusa, Inc. | Ascent Partners Fund, LLC | Lien |
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
Mar 2034
Term ends Mar 13, 2034. Maintenance fees still fall due before then
Note
The 448 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 10,383,557, US 10,874,337, US 9,650,566.
Citations
3
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.