Also listed on BioAtla Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Mar 13, 2035 · High confidence
20-year base term ends Mar 13, 2035
Held by Immutep S.A.S.
Filed Jun 9, 2020 as application 16/897,238 · Granted Mar 18, 2025
Base term plus 712 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2015
2035
Clock starts
Mar 13, 2015
Mar 13, 2015
Term ends
Mar 13, 2035
Mar 13, 2035
Granted
Mar 18, 2025
Mar 18, 2025
base term
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
712
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 10,711,060, US 9,908,936.
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.
5
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 712 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, 2015, when application 14/657,260, the earliest non-provisional in its chain, was filed (this one was filed Jun 9, 2020) | Mar 13, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +712 days, USPTO patent term adjustment record | Feb 22, 2037 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,711,060, US 9,908,936) | capped to Mar 13, 2035 | 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, 2035 | High confidence |
This family
| Application 14/657,260 | Abandoned not computed | not computed |
| US 9,908,936 | In force Mar 2035 | Mar 2035 |
| US 10,711,060 | In force Mar 2035 | Mar 2035 |
| US 12,252,535 | this patent Mar 2035 | Mar 2035 |
| Application 19/024,582 | Pending 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 |
|---|---|---|---|
| Sep 14, 2021 Reel 57478, frame 493 | Triebel, Frederic | Immutep S.A. | Assignment of Assignor's Interest |
| Sep 14, 2021 Reel 57478, frame 236 | Blattler, Walter A.; Mataraza, Jennifer Marie; Sabatos-peyton, Catherine Anne | Costim Pharmaceuticals Inc. | Assignment of Assignor's Interest |
| Sep 14, 2021 Reel 57478, frame 18 | Frey, Gerhard Johann; Chang, Hwai Wen | BioAtla, LLC | Assignment of Assignor's Interest |
| Sep 14, 2021 Reel 57478, frame 96 | BioAtla, LLC | Costim Pharmaceuticals Inc. | Assignment of Assignor's Interest |
| Sep 14, 2021 Reel 57478, frame 295 | Costim Pharmaceuticals Inc. | Novartis AG | Assignment of Assignor's Interest |
| Oct 11, 2021 Reel 57886, frame 335 | Immutep S.A. | Immutep S.A.S. | Change of Name |
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.
What's changing
Mar 2035
Term ends Mar 13, 2035. Maintenance fees still fall due before then
Note
The 712 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 10,711,060, US 9,908,936.
Citations
5
later US patents cite this one
Fewer than half of the utility patents granted in 2025 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.