Term ends Jul 1, 2031 · High confidence
20-year base term ends Jul 1, 2031
Filed Nov 17, 2011 as application 13/298,997 · Granted Feb 3, 2015
Base term, 20 years from filing
Today
2011
2031
Clock starts
Jul 1, 2011
Jul 1, 2011
Term ends
Jul 1, 2031
Jul 1, 2031
Granted
Feb 3, 2015
Feb 3, 2015
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.
27
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 Jul 1, 2011, when applications 13/175,633 and 13/175,634, the earliest non-provisional applications in its chain, were filed (this one was filed Nov 17, 2011) | Jul 1, 2031 | 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 | Jul 1, 2031 | High confidence |
This family
| Application 12/054,299 | Abandoned not computed | not computed |
| US 8,337,014 | In force Mar 2028 | Mar 2028 |
| US 8,922,902 | In force Mar 2031 | Mar 2031 |
| Application 13/169,996 | Abandoned not computed | not computed |
| US 8,783,861 | In force Mar 2032 | Mar 2032 |
| Application 13/175,634 | Abandoned not computed | not computed |
| US 8,979,259 | In force Aug 2032 | Aug 2032 |
| US 8,944,590 | this patent Jul 2031 | Jul 2031 |
8 of 27 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 |
|---|---|---|---|
| Feb 1, 2012 Reel 27635, frame 896 | Blum, Ronald D.; Haddock, Joshua N.; Longa, Claudio Dalla; Graham, Mark; Wang, Yongping | 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 |
| Apr 19, 2023 Reel 63376, frame 314 | Mitsui Chemicals, Inc. | E-Vision, LLC; E-Vision Smart Optics, Inc. | License |
| Apr 19, 2023 reel/frame not recorded | Mitsui Chemicals, Inc. | E-Vision, LLC | License |
| Apr 19, 2023 reel/frame not recorded | Mitsui Chemicals, Inc. | E-Vision Smart Optics, Inc. | License |
| Oct 25, 2023 Reel 65334, frame 851 | Mitsui Chemicals, Inc. | Carl Zeiss Vision International GmbH | Assignment of Assignor's Interest |
| Oct 25, 2023 Reel 65345, frame 339 | Mitsui Chemicals, Inc. | Mitsui Chemicals, Inc. | Change of Address |
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.
What's changing
Jul 2031
Term ends Jul 1, 2031. No further fees fall due before then
Citations
79
later US patents cite this one
That is top 5% of utility patents granted in 2015 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.