Term ends Mar 1, 2037 · High confidence
20-year base term ends Feb 16, 2037
Held by nChain Licensing AG
Filed Jan 28, 2024 as application 18/424,854 · Granted Nov 11, 2025
Base term plus 13 days of patent term adjustment (USPTO delay)
Today
2017
2037
Clock starts
Feb 16, 2017
Feb 16, 2017
Term ends
Mar 1, 2037
Mar 1, 2037
Granted
Nov 11, 2025
Nov 11, 2025
base term
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
13
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 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.
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 13 days past its 20-year base term on prosecution delay. 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 Feb 16, 2017, when application PCT/IB2017/050856, the earliest non-provisional in its chain, was filed (this one was filed Jan 28, 2024) | Feb 16, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +13 days, USPTO patent term adjustment record | Mar 1, 2037 | 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 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 1, 2037 | High confidence |
This family
| US 10,652,014 | In force May 2037 | May 2037 |
| US 11,349,645 | In force Feb 2037 | Feb 2037 |
| US 11,936,774 | In force Feb 2037 | Feb 2037 |
| US 12,470,369 | this patent Mar 2037 | Mar 2037 |
| Application 19/343,628 | 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 |
|---|---|---|---|
| Jan 28, 2024 Reel 66270, frame 446 | Wright, Craig; Savanah, Stephane | nChain Holdings Ltd. | Assignment of Assignor's Interest |
| Jan 28, 2024 Reel 66376, frame 560 | 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
Mar 2037
Term ends Mar 1, 2037. Maintenance fees still fall due before then
Note
The 13 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
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.