Lapsed Dec 29, 2024 on the fee record · High confidence
20-year base term ends Mar 13, 2034
First maintenance fee unpaid; grace period ended.
Held by Profusa, Inc.
Filed Jul 18, 2019 as application 16/515,731 · Granted Dec 29, 2020
Base term, 20 years from filing
Today
Lapsed Dec 29, 2024
2014
2034
Clock starts
Mar 13, 2014
Mar 13, 2014
No longer in force
Dec 29, 2024
Dec 29, 2024
Granted
Dec 29, 2020
Dec 29, 2020
Term would have run to
Mar 13, 2034
Mar 13, 2034
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,383,557, US 9,375,494, US 9,650,566, US 9,867,560, to Mar 13, 2034. The term already ends on or before that date, so the cap shortened nothing.
0 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.
6
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Mar 13, 2034: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Jul 18, 2019) | Mar 13, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,383,557, US 9,375,494, US 9,650,566, US 9,867,560) | resolves to Mar 13, 2034, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Dec 29, 2024 | High confidence |
| Computed term end | The steps above, in order | Dec 29, 2024 | 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 | this patent Dec 2024 | Dec 2024 |
| US 12,048,535 | In force 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 |
|---|---|---|---|
| Mar 23, 2020 Reel 52195, frame 347 | Gamsey, Soya; Wisniewski, Natalie; Helton, Kristen; McMillan, William | Profusa, Inc. | Assignment of Assignor's Interest |
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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,383,557, US 9,375,494, US 9,650,566, US 9,867,560, ends no earlier than this term, so it caps nothing.
Citations
10
later US patents cite this one
That is top 25% 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.