Term ends Oct 27, 2030 · Medium confidence
20-year base term ends Oct 27, 2030
Why Medium: A parent in the chain could not be resolved.
Filed Nov 22, 2019 as application 16/691,730 · Granted Feb 3, 2026
USPTO first gave this application the numbers US 11,776,964, US 11,830,880 and US 11,894,380 and withdrew each before it issued. Those numbers now lead here.
Base term, 20 years from filing
Today
2010
2030
Clock starts
Oct 27, 2010
Oct 27, 2010
Term ends
Oct 27, 2030
Oct 27, 2030
Granted
Feb 3, 2026
Feb 3, 2026
base term
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.
9
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. 0 of 1 maintenance fees are paid so far. 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 Oct 27, 2010, when application 12/913,464, the earliest non-provisional in its chain, was filed (this one was filed Nov 22, 2019); a parent in its chain could not be resolved (the next row) | Oct 27, 2030 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium 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 | In force | High confidence |
| Computed term end | The steps above, in order | Oct 27, 2030 | Medium confidence |
This family
| US 10,490,553 | In force Mar 2034 | Mar 2034 |
| US 12,543,366 | this patent Oct 2030 | Oct 2030 |
| Application 18/234,410 | Pending not computed | not computed |
| Application 18/234,414 | Pending not computed | not computed |
| Application 18/538,192 | Pending not computed | not computed |
| Application 18/538,161 | Pending not computed | not computed |
| Application 18/538,009 | Pending not computed | not computed |
| Application 18/537,929 | Pending not computed | not computed |
8 of 9 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 |
|---|---|---|---|
| Nov 22, 2019 Reel 51088, frame 890 | Yamazaki, Shunpei | 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.
What's changing
Oct 2030
Term ends Oct 27, 2030. Maintenance fees still fall due before then
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.