Collateral for a security interest recorded Jul 21, 2025 (Ascent Partners Fund, LLC).
Term ends May 11, 2031 · High confidence
20-year base term ends May 27, 2030
Held by Profusa, Inc.
Filed Aug 15, 2014 as application 14/461,144 · Granted Jul 3, 2018
Base term plus 349 days of patent term adjustment (USPTO delay)
Today
2010
2031
Clock starts
May 27, 2010
May 27, 2010
Term ends
May 11, 2031
May 11, 2031
Granted
Jul 3, 2018
Jul 3, 2018
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
349
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.
10
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 349 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 May 27, 2010, when application 12/789,048, the earliest non-provisional in its chain, was filed (this one was filed Aug 15, 2014) | May 27, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +349 days, USPTO patent term adjustment record | May 11, 2031 | 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 (reinstated) | High confidence |
| Computed term end | The steps above, in order | May 11, 2031 | High confidence |
This family
| US 9,517,023 | Lapsed on the fee record Dec 2024 | Dec 2024 |
| Application PCT/US2010/036698 | PCT application no patent term | no patent term |
| US 10,463,287 | In force Oct 2031 | Oct 2031 |
| US 10,010,272 | this patent May 2031 | May 2031 |
| US 10,117,613 | In force Oct 2031 | Oct 2031 |
| US 10,583,308 | Lapsed on the fee record Mar 2024 | Mar 2024 |
| Application 15/606,666 | Abandoned not computed | not computed |
| Application 16/017,752 | Abandoned not computed | not computed |
8 of 10 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 |
|---|---|---|---|
| Apr 20, 2015 Reel 35450, frame 93 | Wisniewski, Natalie A.; Helton, Kristen; McMillan, William A. | Profusa, Inc. | Assignment of Assignor's Interest |
| May 22, 2015 Reel 35751, frame 179 | Wisniewski, Natalie A.; Petersen, Kurt E.; Helton, Kristen; McMillan, William A. | Profusa, Inc. | Corrective Assignment to Correct the Add the Second Inventors Name Previously Recorded at Reel: 035450 Frame: 0093. Assignor(S) Hereby Confirms the Assignment. |
| 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
May 2031
Term ends May 11, 2031. Maintenance fees still fall due before then
Note
The 349 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
36
later US patents cite this one
That is top 10% of utility patents granted in 2018 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.