Term ends Oct 23, 2039 · Medium confidence
20-year base term ends Apr 19, 2039
Why Medium: A parent in the chain could not be resolved.
Held by Elios Vision, Inc.
Filed Mar 21, 2024 as application 18/612,542 · Granted Feb 10, 2026
Base term plus 187 days of patent term adjustment (USPTO delay)
Today
2019
2039
Clock starts
Apr 19, 2019
Apr 19, 2019
Term ends
Oct 23, 2039
Oct 23, 2039
Granted
Feb 10, 2026
Feb 10, 2026
base term
patent term adjustment
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
187
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 187 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 Apr 19, 2019, when application 16/389,346, the earliest non-provisional in its chain, was filed (this one was filed Mar 21, 2024); a parent in its chain could not be resolved (the next row) | Apr 19, 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 | +187 days, USPTO patent term adjustment record | Oct 23, 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 | Oct 23, 2039 | Medium confidence |
This family
| US 11,076,933 | In force Apr 2039 | Apr 2039 |
| Application PCT/US2020/028962 | PCT application no patent term | no patent term |
| US 11,974,890 | In force Oct 2039 | Oct 2039 |
| US 12,544,185 | this patent Oct 2039 | Oct 2039 |
| Application 19/181,878 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Jul 22, 2024 Reel 68045, frame 946 | Junger, Johannes; Enders, Markus | Elt Sight, Inc. | Assignment of Assignor's Interest |
| Jul 22, 2024 Reel 68477, frame 876 | Elt Sight, Inc. | Elios Vision, Inc. | Change of Name |
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
Oct 2039
Term ends Oct 23, 2039. Maintenance fees still fall due before then
Note
The 187 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.