Term ends Feb 16, 2043 · High confidence
20-year base term ends Oct 30, 2039
Held by C3S2 GmbH
Filed Apr 28, 2021 as application 17/289,690 · Granted Jan 13, 2026
Base term plus 1205 days of patent term adjustment (USPTO delay)
Today
2019
2043
Clock starts
Oct 30, 2019
Oct 30, 2019
Term ends
Feb 16, 2043
Feb 16, 2043
Granted
Jan 13, 2026
Jan 13, 2026
base term
patent term adjustment
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
1,205
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.
2
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 1205 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 Oct 30, 2019, when application PCT/EP2019/079746, the earliest non-provisional in its chain, was filed (this one was filed Apr 28, 2021) | Oct 30, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1205 days, USPTO patent term adjustment record | Feb 16, 2043 | 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 | Feb 16, 2043 | High confidence |
This family
| US 12,522,660 | this patent Feb 2043 | Feb 2043 |
1 of 2 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 |
|---|---|---|---|
| Mar 4, 2022 Reel 59172, frame 571 | Germeroth, Lothar; Poltorak, Mateusz Pawel; Schmidt, Thomas; Stemberger, Christian | Juno Therapeutics GmbH | Assignment of Assignor's Interest |
| Sep 15, 2025 Reel 72906, frame 617 | Juno Therapeutics GmbH | C3S2 GmbH | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Feb 2043
Term ends Feb 16, 2043. Maintenance fees still fall due before then
Note
The 1205 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.