Lapsed Aug 16, 2026 on the fee record · High confidence
20-year base term ends Nov 22, 2026
First maintenance fee unpaid; grace period ended.
Filed Jul 13, 2020 as application 16/926,878 · Granted Aug 16, 2022
Base term, 20 years from filing
Today
Lapsed Aug 16, 2026
2006
2026
Clock starts
Nov 22, 2006
Nov 22, 2006
No longer in force
Aug 16, 2026
Aug 16, 2026
Granted
Aug 16, 2022
Aug 16, 2022
Term would have run to
Nov 22, 2026
Nov 22, 2026
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
6
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Nov 22, 2026: 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 22, 2006, when application 11/562,678, the earliest non-provisional in its chain, was filed (this one was filed Jul 13, 2020) | Nov 22, 2026 | 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 | 0 of 1 maintenance fees paid | lapsed Aug 16, 2026 | High confidence |
| Computed term end | The steps above, in order | Aug 16, 2026 | High confidence |
This family
| US 8,325,111 | Lapsed on the fee record Dec 2024 | Dec 2024 |
| US 8,890,180 | In force Nov 2026 | Nov 2026 |
| US 9,997,584 | In force Jan 2027 | Jan 2027 |
| Application 15/996,704 | Abandoned not computed | not computed |
| US 11,417,720 | this patent Aug 2026 | Aug 2026 |
| US 12,063,829 | In force Nov 2026 | Nov 2026 |
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 |
|---|---|---|---|
| Jul 13, 2020 Reel 53190, frame 794 | Kimura, Hajime | Semiconductor Energy Laboratory Co., Ltd. | 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.
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Alerts on its grants, lapses and transfers.
Citations
2
later US patents cite this one
That is above the median of utility patents granted in 2022 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.