Also listed on Hpo Assets LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Feb 22, 2028 · High confidence
20-year base term ends Feb 22, 2028
Held by E-Vision Optics, LLC
Filed Mar 18, 2009 as application 12/406,656 · Granted Apr 19, 2011
Base term, 20 years from filing
Today
2008
2028
Clock starts
Feb 22, 2008
Feb 22, 2008
Term ends
Feb 22, 2028
Feb 22, 2028
Granted
Apr 19, 2011
Apr 19, 2011
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
2
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. All three maintenance fees are recorded paid; no more fees are due. 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 Feb 22, 2008, when application 12/035,779, the earliest non-provisional in its chain, was filed (this one was filed Mar 18, 2009) | Feb 22, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 22, 2028 | High confidence |
This family
| US 8,215,770 | In force Feb 2028 | Feb 2028 |
| US 7,926,940 | this patent Feb 2028 | Feb 2028 |
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 |
|---|---|---|---|
| Apr 28, 2009 Reel 22602, frame 940 | Blum, Ronald D.; Haddock, Joshua N.; Kokonaski, William; Gupta, Amitava | Pixeloptics, Inc. | Assignment of Assignor's Interest |
| Jul 3, 2014 Reel 33240, frame 931 | Pixeloptics, Inc. | Hpo Assets LLC | Assignment of Assignor's Interest |
| Nov 4, 2014 Reel 34099, frame 969 | Hpo Assets LLC | Mitsui Chemicals, Inc. | Assignment of Assignor's Interest |
| Jan 23, 2019 Reel 48099, frame 104 | Mitsui Chemicals, Inc. | E-Vision, LLC | Assignment of Assignor's Interest |
| Jun 2, 2022 Reel 60090, frame 107 | Elenza, Inc. | EA3TECH, LLC | Assignment of Assignor's Interest |
| Nov 20, 2023 Reel 65629, frame 772 | E-Vision, LLC | E-Vision Optics, LLC | 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
Feb 2028
Term ends Feb 22, 2028. No further fees fall due before then
Citations
296
later US patents cite this one
That is top 5% of utility patents granted in 2011 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.