Term ends Apr 8, 2029 · Medium confidence
20-year base term ended Nov 3, 2026
Why Medium: A parent in the chain could not be resolved.
Held by Generac Power Systems, Inc.
Filed Nov 30, 2012 as application 13/691,376 · Granted Oct 17, 2017
Base term plus 887 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Nov 3, 2006
Nov 3, 2006
Term ends
Apr 8, 2029
Apr 8, 2029
Granted
Oct 17, 2017
Oct 17, 2017
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
887
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 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
7
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 887 days past its 20-year base term on prosecution delay. 2 of 2 maintenance fees are paid so far. Confidence: Medium. 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 3, 2006, when application 11/556,496, the earliest non-provisional in its chain, was filed (this one was filed Nov 30, 2012); a parent in its chain could not be resolved (the next row) | Nov 3, 2026 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +887 days, USPTO patent term adjustment record | Apr 8, 2029 | 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 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 8, 2029 | Medium confidence |
This family
| US 7,548,826 | In force Dec 2026 | Dec 2026 |
| US 8,359,248 | In force Mar 2030 | Mar 2030 |
| US 7,974,809 | In force May 2027 | May 2027 |
| Application 13/691,374 | Abandoned not computed | not computed |
| Application 13/691,370 | Abandoned not computed | not computed |
| US 9,709,636 | In force Sep 2029 | Sep 2029 |
| US 9,791,520 | this patent Apr 2029 | Apr 2029 |
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 |
|---|---|---|---|
| Dec 4, 2012 Reel 29403, frame 37 | Witter, Bradley Jay; Butler, Thomas Joseph; Scoufis, Joseph J.; Reichel, Eric D. | Blue Pillar, Inc. | Assignment of Assignor's Interest |
| Jun 13, 2014 Reel 33157, frame 163 | Blue Pillar, Inc. | Bridge Bank, National Association | Security Interest |
| Jul 1, 2016 Reel 39063, frame 743 | Blue Pillar, Inc. | Silicon Valley Bank | Security Interest |
| Feb 16, 2017 Reel 41741, frame 157 | Silicon Valley Bank | Blue Pillar, Inc. | Release of Security Interest |
| Jul 3, 2017 Reel 42883, frame 620 | Blue Pillar, Inc. | Pivotal Capital Fund, LP | Security Interest |
| Jul 17, 2017 Reel 43021, frame 641 | Western Alliance Bank | Blue Pillar, Inc. | Release of Security Interest |
| Nov 20, 2019 Reel 51063, frame 104 | Bpac, Inc. | Bpac, Inc. | Release of Security Interest |
| Nov 20, 2019 Reel 51064, frame 227 | Blue Pillar, Inc. | Bpac, Inc. | Voluntary Surrender of Collateral |
| Nov 20, 2019 Reel 51065, frame 514 | Pivotal Capital Fund, LP | Bpac, Inc. | Assignment and Assumption Agreement |
| Jul 18, 2023 Reel 64299, frame 58 | Bpac, Inc. | Generac Power Systems, Inc. | Merger |
| Jan 13, 2025 Reel 70569, frame 152 | Pivotal Capital Fund, LP | Bpac, Inc. | Corrective Assignment to Correct the Receiving Party Data Previously Recorded at Reel: 51065 Frame: 514. Assignor(S) Hereby Confirms the 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Apr 2029
Term ends Apr 8, 2029. No further fees fall due before then
Note
The 887 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
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.