Also listed on Capella Bioscience Ltd., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 27, 2039 · High confidence
20-year base term ends Jan 24, 2039
Filed Apr 22, 2022 as application 17/660,382 · Granted Feb 18, 2025
Base term plus 276 days of patent term adjustment (USPTO delay)
Today
2019
2039
Clock starts
Jan 24, 2019
Jan 24, 2019
Term ends
Oct 27, 2039
Oct 27, 2039
Granted
Feb 18, 2025
Feb 18, 2025
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
276
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,312,781, to Oct 27, 2039. 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.
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 276 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Jan 24, 2019, when application 16/256,688, the earliest non-provisional in its chain, was filed (this one was filed Apr 22, 2022) | Jan 24, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +276 days, USPTO patent term adjustment record | Oct 27, 2039 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,312,781) | resolves to Oct 27, 2039, 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 | In force | High confidence |
| Computed term end | The steps above, in order | Oct 27, 2039 | High confidence |
This family
| US 11,312,781 | Lapsed on the fee record Apr 2026 | Apr 2026 |
| US 12,227,580 | this patent Oct 2039 | Oct 2039 |
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 28, 2023 Reel 65056, frame 399 | Capella Bioscience Ltd. | Centessa Pharmaceuticals (UK) Limited | Assignment of Assignor's Interest |
| Oct 31, 2023 Reel 65403, frame 606 | Holmes, Steve | Capella Bioscience Ltd. | Assignment of Assignor's Interest |
| Dec 31, 2024 Reel 69708, frame 39 | Centessa Pharmaceuticals (UK) Limited | Oxford Finance LLC | Security Interest |
| Jun 24, 2026 Reel 75069, frame 879 | Oxford Finance LLC | Centessa Pharmaceuticals (UK) Limited | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Oct 2039
Term ends Oct 27, 2039. Maintenance fees still fall due before then
Note
The 276 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,312,781, ends no earlier than this term, so it caps nothing.
Citations
0
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.