Also listed on Cubic Tech Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 2, 2031 · High confidence
20-year base term ends Jun 24, 2031
Held by DSM Protective Materials B.V.
Filed Jun 19, 2014 as application 14/309,578 · Granted Jun 7, 2016
Base term plus 131 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Jun 24, 2011
Jun 24, 2011
Term ends
Nov 2, 2031
Nov 2, 2031
Granted
Jun 7, 2016
Jun 7, 2016
base term
patent term adjustment
fee events
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
131
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.
4
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 131 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 Jun 24, 2011, when application 13/168,912, the earliest non-provisional in its chain, was filed (this one was filed Jun 19, 2014) | Jun 24, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +131 days, USPTO patent term adjustment record | Nov 2, 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 | Nov 2, 2031 | High confidence |
This family
| US 8,784,968 | In force Feb 2032 | Feb 2032 |
| Application PCT/US2011/041914 | PCT application no patent term | no patent term |
| US 9,358,755 | this patent Nov 2031 | Nov 2031 |
| US 9,944,042 | In force Jun 2031 | Jun 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 |
|---|---|---|---|
| Nov 24, 2014 Reel 34247, frame 750 | Christopher Michael Adams; Keith Joel McDaniels; Roland Joseph Downs | Cubic Tech Corporation | Assignment of Assignor's Interest |
| Oct 28, 2022 Reel 61579, frame 501 | Cubic Tech Corporation | Wells Fargo Capital Finance, LLC, as Agent | Security Interest |
| Oct 28, 2022 Reel 61799, frame 424 | Cubic Tech Corporation | Citibank, N.A., as Administrative Agent | Security Agreement |
| May 4, 2023 Reel 63540, frame 203 | Cubic Tech Corporation | DSM IP Assets B.V. | Assignment of Assignor's Interest |
| Sep 30, 2023 Reel 65082, frame 600 | DSM IP Assets B.V. | DSM Protective Materials B.V. | Assignment of Assignor's Interest |
| Jun 24, 2025 Reel 71704, frame 194 | Wells Fargo Capital Finance, LLC, as Administrative Agent | Cubic Tech Corporation | Release of Security Interests in Patents Recorded at Reel 061579, Frame 0501. |
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
Nov 2031
Term ends Nov 2, 2031. Maintenance fees still fall due before then
Note
The 131 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
18
later US patents cite this one
That is top 25% of utility patents granted in 2016 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.