Term ends Jun 17, 2039 · Medium confidence
20-year base term ends Jun 13, 2038
Why Medium: A parent in the chain could not be resolved.
Filed Feb 15, 2023 as application 18/169,648 · Granted Feb 24, 2026
Base term plus 369 days of patent term adjustment (USPTO delay)
Today
2018
2039
Clock starts
Jun 13, 2018
Jun 13, 2018
Term ends
Jun 17, 2039
Jun 17, 2039
Granted
Feb 24, 2026
Feb 24, 2026
base term
patent term adjustment
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
369
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
5
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 runs 369 days past its 20-year base term on prosecution delay. 0 of 3 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 Jun 13, 2018, when application PCT/CN2018/091084, the earliest non-provisional in its chain, was filed (this one was filed Feb 15, 2023); a parent in its chain could not be resolved (the next row) | Jun 13, 2038 | 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 | +369 days, USPTO patent term adjustment record | Jun 17, 2039 | 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 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jun 17, 2039 | Medium confidence |
This family
| US 11,592,120 | In force Oct 2039 | Oct 2039 |
| US 12,560,241 | this patent Jun 2039 | Jun 2039 |
| US 12,173,810 | In force Jun 2038 | Jun 2038 |
| US 12,338,899 | In force Jun 2038 | Jun 2038 |
4 of 5 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 |
|---|---|---|---|
| Feb 15, 2023 Reel 62711, frame 726 | Hamm, Mark Kendrick; Cao, Guangbin | Engineered Controls International, LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jun 2039
Term ends Jun 17, 2039. Maintenance fees still fall due before then
Note
The 369 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
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.