Term ends Feb 11, 2028 · High confidence
20-year base term ends Jun 20, 2027
Held by ViOptix, Inc.
Filed Apr 11, 2017 as application 15/485,171 · Granted Jan 21, 2020
Base term plus 236 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
Jun 20, 2007
Jun 20, 2007
Term ends
Feb 11, 2028
Feb 11, 2028
Granted
Jan 21, 2020
Jan 21, 2020
base term
patent term adjustment
fee events
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
236
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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 runs 236 days past its 20-year base term on prosecution delay. 1 of 2 maintenance fees is 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 Jun 20, 2007, when application 29/281,301, the earliest non-provisional in its chain, was filed (this one was filed Apr 11, 2017) | Jun 20, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +236 days, USPTO patent term adjustment record | Feb 11, 2028 | 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 | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 11, 2028 | High confidence |
This family
| US D568,479 | Term ended May 2022 | May 2022 |
| US D587,375 | Term ended Feb 2023 | Feb 2023 |
| US 9,622,694 | In force Apr 2034 | Apr 2034 |
| US 10,537,271 | this patent Feb 2028 | Feb 2028 |
| US 11,540,754 | In force Feb 2028 | Feb 2028 |
| US 12,207,923 | In force Jun 2027 | Jun 2027 |
The applications whose file history this site holds. The family may have others.
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
Feb 2028
Term ends Feb 11, 2028. Maintenance fees still fall due before then
Note
The 236 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
12
later US patents cite this one
That is top 25% of utility patents granted in 2020 in our data, the only group it is compared against.
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.