Term ends Nov 11, 2039 · High confidence
20-year base term ends Apr 17, 2038
Held by Tempest Therapeutics, Inc.
Filed Oct 15, 2019 as application 16/605,408 · Granted Aug 29, 2023
Base term plus 573 days of patent term adjustment (USPTO delay)
Today
2018
2039
Clock starts
Apr 17, 2018
Apr 17, 2018
Term ends
Nov 11, 2039
Nov 11, 2039
Granted
Aug 29, 2023
Aug 29, 2023
base term
patent term adjustment
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
573
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
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 573 days past its 20-year base term on prosecution delay. 0 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 Apr 17, 2018, when application PCT/US2018/028034, the earliest non-provisional in its chain, was filed (this one was filed Oct 15, 2019) | Apr 17, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +573 days, USPTO patent term adjustment record | Nov 11, 2039 | 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 | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 11, 2039 | High confidence |
This family
| Application PCT/US2018/028034 | PCT application no patent term | no patent term |
| US 11,738,009 | this patent Nov 2039 | Nov 2039 |
| US 11,066,405 | In force Apr 2038 | Apr 2038 |
| US 11,638,704 | In force Apr 2038 | Apr 2038 |
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 13, 2020 Reel 52383, frame 319 | Bravo, Yalda; Chen, Austin Chih-yu; Nagamizo, Joe Fred | Inception Sciences, Inc. | Assignment of Assignor's Interest |
| Apr 13, 2020 Reel 52385, frame 620 | Burch, Jason David | Inception Sciences Canada, Inc. | Assignment of Assignor's Interest |
| Apr 13, 2020 Reel 52383, frame 327 | Inception Sciences, Inc.; Inception Sciences Canada, Inc. | Tempest Therapeutics, Inc. | Assignment of Assignor's Interest |
| Dec 28, 2022 Reel 62221, frame 808 | Tempesttx, Inc. (F/K/A Tempest Therapeutics, Inc.); Tempest Therapeutics, Inc. (F/K/A Millendo Therapeutics, Inc.); Millendo Therapeutics US, Inc. | Oxford Finance LLC | Security Interest |
| Apr 10, 2025 reel/frame not recorded | Oxford Finance LLC | Tempesttx, Inc. | Release of Security Interest |
| Apr 10, 2025 reel/frame not recorded | Oxford Finance LLC | Tempest Therapeutics, Inc. | Release of Security Interest |
| Apr 10, 2025 reel/frame not recorded | Oxford Finance LLC | Millendo Therapeutics US, Inc. | Release of Security Interest |
| Apr 10, 2025 Reel 70806, frame 566 | Oxford Finance LLC | Tempesttx, Inc.; Tempest Therapeutics, Inc.; Millendo Therapeutics US, Inc. | Release of Security 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Nov 2039
Term ends Nov 11, 2039. Maintenance fees still fall due before then
Note
The 573 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
That is top 10% of utility patents granted in 2023 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.