Term ends Dec 29, 2037 · High confidence
20-year base term ends Feb 14, 2037
Held by nChain Licensing AG
Filed Mar 6, 2023 as application 18/118,086 · Granted Nov 11, 2025
Base term plus 318 days of patent term adjustment (USPTO delay)
Today
2017
2037
Clock starts
Feb 14, 2017
Feb 14, 2017
Term ends
Dec 29, 2037
Dec 29, 2037
Granted
Nov 11, 2025
Nov 11, 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
318
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 11,182,782, to Dec 29, 2037. 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.
This patent's term runs 318 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 Feb 14, 2017, when application PCT/IB2017/050829, the earliest non-provisional in its chain, was filed (this one was filed Mar 6, 2023) | Feb 14, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +318 days, USPTO patent term adjustment record | Dec 29, 2037 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,182,782) | resolves to Dec 29, 2037, 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 | Dec 29, 2037 | High confidence |
This family
| US 10,659,223 | In force Feb 2037 | Feb 2037 |
| US 11,621,833 | In force Feb 2037 | Feb 2037 |
| US 12,470,371 | this patent Dec 2037 | Dec 2037 |
| US 12,562,892 | In force Feb 2037 | Feb 2037 |
| Application 19/415,387 | Pending not computed | not computed |
5 of 6 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 6, 2023 Reel 62897, frame 681 | Wright, Craig; Savanah, Stephane | nChain Holdings Ltd. | Assignment of Assignor's Interest |
| Mar 6, 2023 Reel 62966, frame 461 | nChain Holdings Ltd. | nChain Licensing AG | 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
Dec 2037
Term ends Dec 29, 2037. Maintenance fees still fall due before then
Note
The 318 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 11,182,782, 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.