Term ends Mar 22, 2031 · High confidence
20-year base term ends Mar 22, 2031
Filed Oct 9, 2015 as application 14/879,581 · Granted Jan 15, 2019
Base term, 20 years from filing
Today
2011
2031
Clock starts
Mar 22, 2011
Mar 22, 2011
Term ends
Mar 22, 2031
Mar 22, 2031
Granted
Jan 15, 2019
Jan 15, 2019
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,161,448, to Mar 22, 2031. The term already ends on or before that date, so the cap shortened nothing.
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.
45
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. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Mar 22, 2011, when application PCT/US2011/029365, the earliest non-provisional in its chain, was filed (this one was filed Oct 9, 2015) | Mar 22, 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 | Disclaimer resolved from the filed document (refs US 9,161,448) | resolves to Mar 22, 2031, no earlier than this term, so no change | 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 | Mar 22, 2031 | High confidence |
This family
| Application PCT/US2010/023577 | PCT application no patent term | no patent term |
| Application PCT/US2010/028844 | PCT application no patent term | no patent term |
| Application PCT/US2010/002519 | PCT application no patent term | no patent term |
| Application PCT/US2011/020353 | PCT application no patent term | no patent term |
| Application PCT/US2011/029365 | PCT application no patent term | no patent term |
| Application PCT/US2011/029357 | PCT application no patent term | no patent term |
| Application PCT/US2011/039408 | PCT application no patent term | no patent term |
| Application PCT/US2011/044833 | PCT application no patent term | no patent term |
8 of 45 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 |
|---|---|---|---|
| Apr 11, 2017 Reel 42231, frame 140 | Semprius, Inc. | Semprius (Assignment for the Benefit of Creditors), LLC | Assignment of Assignor's Interest |
| Apr 13, 2017 Reel 42244, frame 531 | Semprius (Assignment for the Benefit of Creditors), LLC | X-Celeprint Limited | Assignment of Assignor's Interest |
| Aug 24, 2017 Reel 43384, frame 864 | Menard, Etienne; Meitl, Matthew | Semprius, Inc. | Assignment of Assignor's Interest |
| May 11, 2020 Reel 52631, frame 800 | X-Celeprint Limited | X Display Company Technology Limited | Change of Name |
| Sep 16, 2021 Reel 57501, frame 765 | X-Celeprint Limited | X Display Company Technology Limited | Change of Name |
| Oct 5, 2026 Reel 76263, frame 56 | Daktronics, Inc. | X-Celeprint Limited | 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
Mar 2031
Term ends Mar 22, 2031. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,161,448, ends no earlier than this term, so it caps nothing.
Citations
12
later US patents cite this one
That is top 25% of utility patents granted in 2019 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.