Also listed on Rolith, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Sep 28, 2031 · High confidence
20-year base term ends Jul 25, 2031
Filed Feb 14, 2013 as application 13/767,639 · Granted Jun 30, 2015
Base term plus 65 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Jul 25, 2011
Jul 25, 2011
Term ends
Sep 28, 2031
Sep 28, 2031
Granted
Jun 30, 2015
Jun 30, 2015
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
65
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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 runs 65 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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 Jul 25, 2011, when application PCT/US2011/045197, the earliest non-provisional in its chain, was filed (this one was filed Feb 14, 2013) | Jul 25, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +65 days, USPTO patent term adjustment record | Sep 28, 2031 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 28, 2031 | High confidence |
This family
| Application PCT/US2011/045197 | PCT application no patent term | no patent term |
| US 9,069,244 | this patent Sep 2031 | Sep 2031 |
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 15, 2013 Reel 29819, frame 870 | Kobrin, Boris | Rolith, Inc. | Assignment of Assignor's Interest |
| Jun 17, 2016 Reel 38945, frame 136 | Rolith, Inc. | Metamaterial Technologies USA, Inc. | Assignment of Assignor's Interest |
| Apr 5, 2020 Reel 52315, frame 29 | Metamaterial Technologies USA, Inc. | BDC Capital Inc. | Security Interest |
| Jun 11, 2021 Reel 56522, frame 648 | BDC Capital Inc. | Metamaterial Technologies USA, Inc. | Release of Security Interest |
| Apr 17, 2025 Reel 70871, frame 818 | Christina Lovato, Chapter 7 Trustee of the Bankruptcy Estate of Meta Materials Inc. | E Ink Corporation | Court Appointment |
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
Sep 2031
Term ends Sep 28, 2031. Maintenance fees still fall due before then
Note
The 65 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
35
later US patents cite this one
That is top 25% 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.