Term ends Dec 16, 2039 · Low confidence
20-year base term ends Jul 21, 2040
Filed Dec 6, 2022 as application 18/076,286 · Granted Nov 21, 2023
Base term, 20 years from filing · capped by a resolved terminal disclaimer
Today
2020
2040
Clock starts
Jul 21, 2020
Jul 21, 2020
Term ends
Dec 16, 2039
Dec 16, 2039
Granted
Nov 21, 2023
Nov 21, 2023
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.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 11,388,030, US 11,552,832.
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.
4
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 resolved from the filed document caps it earlier. 0 of 3 maintenance fees are paid so far. Confidence: Low. 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 Jul 21, 2020, when application PCT/CN2020/103356, the earliest non-provisional in its chain, was filed (this one was filed Dec 6, 2022); a parent in its chain could not be resolved (the next row) | Jul 21, 2040 | 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 | Disclaimer resolved from the filed document (refs US 11,388,030, US 11,552,832) | capped to Dec 16, 2039 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Further caveats on record | The record names parents not resolved: PCTCN2020103356, PCTCN2020103356, PCTCN2020103356 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Dec 16, 2039 | Low confidence |
This family
| US 11,388,030 | In force Dec 2039 | Dec 2039 |
| US 11,552,832 | In force Dec 2039 | Dec 2039 |
| US 11,824,690 | this patent Dec 2039 | Dec 2039 |
3 of 4 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.
What's changing
Dec 2039
Term ends Dec 16, 2039. Maintenance fees still fall due before then
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 11,388,030, US 11,552,832.
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
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.