Term ended no later than Nov 25, 2024 · Medium confidence
20-year base term ended Nov 25, 2024
Held by Citizen Electronics Co., Ltd.
Filed Jun 29, 2021 as application 17/361,880 · Granted Jul 11, 2023
Base term, 20 years from filing
Today
Ended no later than Nov 25, 2024
2004
2026
Clock starts
Nov 25, 2004
Nov 25, 2004
Ended no later than
Nov 25, 2024
Nov 25, 2024
Granted
Jul 11, 2023
Jul 11, 2023
base term
after the term ends
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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
None due
Maintenance fees
This term ends before the first maintenance fee's grace period does, 4 years from grant, so no fee can end it early.
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. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Medium. 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 29, 2021) | 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 | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | No maintenance fee can end the term early | term ended | High confidence |
| Computed term end | The steps above, in order | no later than Nov 25, 2024 | Medium 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 | Term ended Nov 2024 | Nov 2024 |
| US 11,084,980 | Lapsed on the fee record Aug 2025 | Aug 2025 |
| US 11,697,765 | this patent 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Nov 25, 2024. We will not guess the cap.
Citations
0
later US patents cite this one
That is below 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.