Term ends Jun 14, 2039 · Medium confidence
20-year base term ends Jun 14, 2039
Why Medium: A parent in the chain could not be resolved.
Filed Feb 28, 2024 as application 18/589,950 · Granted Sep 9, 2025
Base term, 20 years from filing
Today
2019
2039
Clock starts
Jun 14, 2019
Jun 14, 2019
Term ends
Jun 14, 2039
Jun 14, 2039
Granted
Sep 9, 2025
Sep 9, 2025
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 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.
6
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 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 14, 2019, when application PCT/CN2019/091354, the earliest non-provisional in its chain, was filed (this one was filed Feb 28, 2024); a parent in its chain could not be resolved (the next row) | Jun 14, 2039 | 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 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jun 14, 2039 | Medium confidence |
This family
| US 11,495,772 | In force Oct 2039 | Oct 2039 |
| US 11,956,988 | In force Jun 2039 | Jun 2039 |
| US 12,414,446 | this patent Jun 2039 | Jun 2039 |
| Application 19/026,283 | Pending not computed | not computed |
| Application 19/642,505 | Pending not computed | not computed |
5 of 6 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 1, 2024 reel/frame not recorded | Jiang, Zhiliang; Zhao, Pan | Chengdu BOE Optoelectronics Technology Co., Ltd. | Assignment of Assignor's Interest |
| Mar 1, 2024 reel/frame not recorded | Jiang, Zhiliang; Zhao, Pan | BOE Technology Group Co., Ltd. | Assignment of Assignor's Interest |
| Mar 1, 2024 Reel 66619, frame 991 | Jiang, Zhiliang; Zhao, Pan | Chengdu BOE Optoelectronics Technology Co., Ltd.; BOE Technology Group 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
Jun 2039
Term ends Jun 14, 2039. Maintenance fees still fall due before then
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.