Collateral for a security interest recorded Jul 21, 2025 (Ascent Partners Fund, LLC).
Term ends Sep 20, 2035 · Medium confidence
20-year base term ends Mar 6, 2034
Why Medium: A parent in the chain could not be resolved.
Held by Profusa, Inc.
Filed Aug 13, 2018 as application 16/102,070 · Granted Oct 5, 2021
Base term plus 563 days of patent term adjustment (USPTO delay)
Today
2014
2035
Clock starts
Mar 6, 2014
Mar 6, 2014
Term ends
Sep 20, 2035
Sep 20, 2035
Granted
Oct 5, 2021
Oct 5, 2021
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
563
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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 563 days past its 20-year base term on prosecution delay. 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 Mar 6, 2014, when application 14/199,497, the earliest non-provisional in its chain, was filed (this one was filed Aug 13, 2018); a parent in its chain could not be resolved (the next row) | Mar 6, 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 | +563 days, USPTO patent term adjustment record | Sep 20, 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 20, 2035 | Medium confidence |
This family
| US 10,045,722 | In force Mar 2034 | Mar 2034 |
| US 11,134,871 | this patent Sep 2035 | Sep 2035 |
| US 12,059,254 | In force Jul 2035 | Jul 2035 |
| Application 18/763,929 | Abandoned not computed | not computed |
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 |
|---|---|---|---|
| Apr 5, 2019 Reel 48806, frame 1 | Kintz, Gregory J.; McMillan, William; Wisniewski, Natalie A. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Sep 2035
Term ends Sep 20, 2035. Maintenance fees still fall due before then
Note
The 563 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is above the median of utility patents granted in 2021 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.