Term ends Jul 7, 2039 · High confidence
20-year base term ends Nov 5, 2038
Held by Aleddra Inc.
Filed Mar 30, 2023 as application 18/129,027 · Granted Mar 18, 2025
Base term plus 244 days of patent term adjustment (USPTO delay)
Today
2018
2039
Clock starts
Nov 5, 2018
Nov 5, 2018
Term ends
Jul 7, 2039
Jul 7, 2039
Granted
Mar 18, 2025
Mar 18, 2025
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
244
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.
22
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 244 days past its 20-year base term on prosecution delay. 0 of 3 maintenance fees are paid so far. 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 5, 2018, when application 16/180,416, the earliest non-provisional in its chain, was filed (this one was filed Mar 30, 2023) | Nov 5, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +244 days, USPTO patent term adjustment record | Jul 7, 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 | Jul 7, 2039 | High confidence |
This family
| US 10,874,762 | In force Feb 2039 | Feb 2039 |
| US 11,103,612 | In force Nov 2038 | Nov 2038 |
| US 11,191,863 | In force Nov 2038 | Nov 2038 |
| Application 17/509,877 | Abandoned not computed | not computed |
| US 12,048,078 | In force Apr 2039 | Apr 2039 |
| US 12,127,314 | In force Apr 2039 | Apr 2039 |
| US 12,251,572 | this patent Jul 2039 | Jul 2039 |
| US 12,317,386 | In force Aug 2039 | Aug 2039 |
8 of 22 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 |
|---|---|---|---|
| Mar 30, 2023 Reel 63180, frame 720 | Maa, Chia-yiu; Yu, Chun-te | Aleddra Inc. | 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
Jul 2039
Term ends Jul 7, 2039. Maintenance fees still fall due before then
Note
The 244 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
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.