Term ends Nov 4, 2031 · High confidence
20-year base term ends Nov 4, 2031
Filed Dec 17, 2014 as application 14/574,265 · Granted Oct 27, 2015
Base term, 20 years from filing
Today
2011
2031
Clock starts
Nov 4, 2011
Nov 4, 2011
Term ends
Nov 4, 2031
Nov 4, 2031
Granted
Oct 27, 2015
Oct 27, 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.
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 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 Nov 4, 2011, when application 13/289,219, the earliest non-provisional in its chain, was filed (this one was filed Dec 17, 2014) | Nov 4, 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 4, 2031 | High confidence |
This family
| US 8,502,234 | In force (reinstated) Feb 2032 | Feb 2032 |
| Application PCT/US2012/062728 | PCT application no patent term | no patent term |
| US 8,941,117 | In force Nov 2031 | Nov 2031 |
| US 9,171,937 | this patent Nov 2031 | Nov 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 |
|---|---|---|---|
| Jul 14, 2015 Reel 36083, frame 66 | Kizilyalli, Isik C.; Nie, Hui; Edwards, Andrew P.; Romano, Linda; Bour, David P.; Brown, Richard J.; Prunty, Thomas R. | Avogy, Inc. | Assignment of Assignor's Interest |
| Feb 2, 2018 Reel 45229, frame 547 | Avogy, Inc. | Nexgen Power Systems, Inc. | Assignment of Assignor's Interest |
| Dec 13, 2018 Reel 47827, frame 774 | Avogy (ABC), LLC | Nexgen Power Systems, Inc. | Corrective Assignment to Correct the Assignor from Avogy, Inc. to Avogy (ABC), LLC Previously Recorded on Reel 045229 Frame 0547. Assignor(S) Hereby Confirms the Assignment. |
| Dec 18, 2018 Reel 47951, frame 967 | Avogy, Inc. | Avogy (ABC), LLC | Assignment of Assignor's Interest |
| Oct 23, 2020 Reel 54244, frame 822 | Nexgen Power Systems, Inc. | South Lake One LLC | Security Interest |
| Jul 26, 2021 Reel 56973, frame 477 | South Lake One LLC | Nexgen Power Systems, Inc. | Release of Security Interest |
| Mar 11, 2024 Reel 66783, frame 161 | Nexgen Power Systems, Inc. | Semiconductor Components Industries, LLC | Assignment of Assignor's Interest |
| Apr 19, 2024 Reel 67172, frame 711 | Nexgen Power Systems, Inc. | Semiconductor Components Industries, LLC | Assignment of Assignor's Interest |
| Apr 24, 2024 Reel 67217, frame 886 | Nexgen (Assignment for the Benefit of Creditors), LLC | Semiconductor Components Industries, LLC | Corrective Assignment to Correct the the Assignor Name Previously Recorded at Reel: 66783 Frame: 161. Assignor(S) Hereby Confirms the Assignment. |
| Apr 24, 2024 Reel 67852, frame 662 | Nexgen Power Systems, Inc. | Nexgen (Assignment for the Benefit of Creditors), LLC | Nunc Pro Tunc Assignment |
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 4, 2031. 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 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.