Term ends Jul 21, 2039 · High confidence
20-year base term ends May 8, 2039
Held by Juntendo Educational Foundation
Filed Aug 10, 2021 as application 17/398,850 · Granted Nov 28, 2023
Base term plus 74 days of patent term adjustment (USPTO delay)
Today
2019
2039
Clock starts
May 8, 2019
May 8, 2019
Term ends
Jul 21, 2039
Jul 21, 2039
Granted
Nov 28, 2023
Nov 28, 2023
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
74
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.
5
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 74 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 May 8, 2019, when application 16/406,523, the earliest non-provisional in its chain, was filed (this one was filed Aug 10, 2021) | May 8, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +74 days, USPTO patent term adjustment record | Jul 21, 2039 | 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 | Jul 21, 2039 | High confidence |
This family
| US 11,093,729 | In force Sep 2039 | Sep 2039 |
| US 11,830,188 | this patent Jul 2039 | Jul 2039 |
| US 12,272,061 | In force May 2039 | May 2039 |
| Application 19/073,909 | Pending not computed | not computed |
| Application 19/372,752 | Pending not computed | not computed |
The applications whose file history this site holds. The family may have others.
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
Jul 2039
Term ends Jul 21, 2039. Maintenance fees still fall due before then
Note
The 74 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is above the median of utility patents granted in 2023 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.