Term ends Dec 27, 2033 · High confidence
20-year base term ends Dec 27, 2033
Held by Corner Star Limited
Filed Jun 10, 2015 as application 14/650,959 · Granted Dec 26, 2017
Base term, 20 years from filing
Today
2013
2033
Clock starts
Dec 27, 2013
Dec 27, 2013
Term ends
Dec 27, 2033
Dec 27, 2033
Granted
Dec 26, 2017
Dec 26, 2017
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.
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.
3
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. 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 Dec 27, 2013, when application PCT/US2013/078062, the earliest non-provisional in its chain, was filed (this one was filed Jun 10, 2015) | Dec 27, 2033 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 27, 2033 | High confidence |
This family
| Application PCT/US2013/078062 | PCT application no patent term | no patent term |
| US 9,850,137 | this patent Dec 2033 | Dec 2033 |
| US 10,189,714 | In force Dec 2033 | Dec 2033 |
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 |
|---|---|---|---|
| Jan 12, 2016 Reel 37485, frame 343 | SunEdison, Inc.; Sun Edison LLC; Solaicx | Wells Fargo Bank, National Association, as Administrative Agent | Security Interest |
| Jan 13, 2016 Reel 37508, frame 606 | SunEdison, Inc.; Sun Edison LLC; Solaicx; NVT, LLC | Wilmington Trust, National Association, Solely in Its Capacity as Collateral Trustee | Security Interest |
| Apr 28, 2016 Reel 38557, frame 472 | SunEdison, Inc. | Deutsche Bank AG New York Branch, as Administrative Agent | Patent Security Agreement |
| Apr 27, 2017 Reel 42351, frame 659 | SunEdison, Inc.; SunEdison Products Singapore Pte. Ltd.; Memc Pasadena, Inc.; Solaicx | Corner Star 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.
What's changing
Dec 2033
Term ends Dec 27, 2033. Maintenance fees still fall due before then
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2017 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.