Term ends Mar 8, 2044 · Medium confidence
20-year base term ends Oct 18, 2043
Why Medium: A parent in the chain could not be resolved.
Filed Feb 5, 2024 as application 18/433,140 · Granted Feb 3, 2026
Base term plus 142 days of patent term adjustment (USPTO delay)
Today
2023
2044
Clock starts
Oct 18, 2023
Oct 18, 2023
Term ends
Mar 8, 2044
Mar 8, 2044
Granted
Feb 3, 2026
Feb 3, 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
142
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.
17
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 142 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 Oct 18, 2023, when application 18/381,231, the earliest non-provisional in its chain, was filed (this one was filed Feb 5, 2024); a parent in its chain could not be resolved (the next row) | Oct 18, 2043 | 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 | +142 days, USPTO patent term adjustment record | Mar 8, 2044 | 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 | Mar 8, 2044 | Medium confidence |
This family
| US 10,502,407 | In force Jun 2038 | Jun 2038 |
| Application PCT/US2019/033152 | PCT application no patent term | no patent term |
| US 11,085,627 | In force Jun 2038 | Jun 2038 |
| US 10,989,403 | In force Jun 2038 | Jun 2038 |
| US 11,680,702 | In force Jun 2038 | Jun 2038 |
| US 11,674,682 | In force Jun 2038 | Jun 2038 |
| US 12,130,000 | In force Jun 2038 | Jun 2038 |
| US 11,901,718 | In force Oct 2043 | Oct 2043 |
8 of 17 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 |
|---|---|---|---|
| Jun 6, 2024 Reel 67639, frame 237 | Spiro, Daniel S. | Exposure Illumination Architects, Inc. | Assignment of Assignor's Interest |
| Sep 9, 2025 Reel 72864, frame 418 | Exposure Illumination Architects, Inc. | Exposure IP LLC | Corrective Assignment to Correct the Wrong Application Number 18,443,140 Previously Recorded on Reel 70355 Frame 82. Assignor(S) Hereby Confirms the Assignment. |
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
Mar 2044
Term ends Mar 8, 2044. Maintenance fees still fall due before then
Note
The 142 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.