Term ends Dec 5, 2037 · High confidence
20-year base term ends Jun 30, 2037
Held by Holtec International
Filed Jun 30, 2017 as application 15/639,332 · Granted Sep 10, 2019
Base term plus 158 days of patent term adjustment (USPTO delay)
Today
2017
2037
Clock starts
Jun 30, 2017
Jun 30, 2017
Term ends
Dec 5, 2037
Dec 5, 2037
Granted
Sep 10, 2019
Sep 10, 2019
base term
patent term adjustment
fee events
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
158
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
15
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 158 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 Jun 30, 2017, when this application, 15/639,332, was filed | Jun 30, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +158 days, USPTO patent term adjustment record | Dec 5, 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 5, 2037 | High confidence |
This family
| Application PCT/US2016/030809 | PCT application no patent term | no patent term |
| Application PCT/US2017/022648 | PCT application no patent term | no patent term |
| US 10,410,756 | this patent Dec 2037 | Dec 2037 |
| US 10,854,346 | In force Nov 2036 | Nov 2036 |
| US 10,515,730 | In force Mar 2037 | Mar 2037 |
| US 10,714,223 | In force Oct 2038 | Oct 2038 |
| US 11,282,615 | In force Nov 2039 | Nov 2039 |
| US 11,043,312 | In force Aug 2039 | Aug 2039 |
8 of 15 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 |
|---|---|---|---|
| Jun 30, 2017 Reel 42876, frame 554 | Singh, Krishna P. | Holtec International | Assignment of Assignor's 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Dec 2037
Term ends Dec 5, 2037. Maintenance fees still fall due before then
Note
The 158 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
26
later US patents cite this one
That is top 10% of utility patents granted in 2019 in our data, the only group it is compared against.
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.