Term ended Nov 25, 2024 · High confidence
20-year base term ended Nov 25, 2024
USPTO later recorded it as expired for non-payment on Oct 19, 2026.
Held by Citizen Electronics Co., Ltd.
Filed Jun 19, 2017 as application 15/626,372 · Granted Sep 11, 2018
Base term, 20 years from filing
Today
Term ended Nov 25, 2024
2004
2026
Clock starts
Nov 25, 2004
Nov 25, 2004
Term ended
Nov 25, 2024
Nov 25, 2024
Granted
Sep 11, 2018
Sep 11, 2018
base term
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
7
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 is its 20-year base term, with no adjustment for prosecution delay. 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 Nov 25, 2004, when application PCT/JP2004/017895, the earliest non-provisional in its chain, was filed (this one was filed Jun 19, 2017) | Nov 25, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 1 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Oct 19, 2026, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | Nov 25, 2024 | High confidence |
This family
| US 8,409,470 | In force Nov 2026 | Nov 2026 |
| Application 13/775,334 | Abandoned not computed | not computed |
| US 9,738,829 | Term ended no later than Feb 2025 | no later than Feb 2025 |
| US 10,072,207 | this patent Nov 2024 | Nov 2024 |
| US 11,084,980 | Lapsed on the fee record Aug 2025 | Aug 2025 |
| US 11,697,765 | Term ended no later than Nov 2024 | no later than Nov 2024 |
6 of 7 applications in this family shown, earliest filings first. 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.
Citations
4
later US patents cite this one
That is above the median of utility patents granted in 2018 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.