Lapsed Oct 30, 2024 on the fee record · High confidence
20-year base term ends Feb 23, 2030
Third maintenance fee unpaid; grace period ended.
Held by The Watt Stopper, Inc.
Filed Feb 23, 2010 as application 12/711,192 · Granted Oct 30, 2012
Base term, 20 years from filing, plus 425 days of patent term adjustment (USPTO delay)
Today
Lapsed Oct 30, 2024
2010
2031
Clock starts
Feb 23, 2010
Feb 23, 2010
No longer in force
Oct 30, 2024
Oct 30, 2024
Granted
Oct 30, 2012
Oct 30, 2012
Term would have run to
Apr 24, 2031
Apr 24, 2031
base term
patent term adjustment
after the term ends
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
425
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.
22
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Apr 24, 2031: its 20-year base term plus 425 days of term adjustment for prosecution delay. 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 Feb 23, 2010, when this application, 12/711,192, was filed | Feb 23, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +425 days, USPTO patent term adjustment record | Apr 24, 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 | lapsed Oct 30, 2024 | High confidence |
| Computed term end | The steps above, in order | Oct 30, 2024 | High confidence |
This family
| US 8,299,734 | this patent Oct 2024 | Oct 2024 |
| US 8,368,328 | Lapsed on the fee record Feb 2021 | Feb 2021 |
| US 8,659,246 | Lapsed on the fee record Feb 2022 | Feb 2022 |
| US 8,575,872 | Lapsed on the fee record Nov 2021 | Nov 2021 |
| US 9,018,868 | In force Jul 2030 | Jul 2030 |
| US 8,791,658 | Lapsed on the fee record Jul 2022 | Jul 2022 |
| US 9,194,179 | In force Jul 2030 | Jul 2030 |
| US 8,947,027 | In force Feb 2030 | Feb 2030 |
8 of 22 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 |
|---|---|---|---|
| Feb 23, 2010 Reel 23979, frame 855 | Mullet, Willis Jay; Brunk, Darrin W.; Wysoczynski, Christopher Lee; Asbury, Harry Edward; Hand, Richard Scott; Rodriguez, Yan; Bruckner, Benjamin Anthony | Homerun Holdings, Corp. | Assignment of Assignor's Interest |
| Mar 24, 2011 Reel 26010, frame 671 | Homerun Holdings Corp. | HRH Newco Corporation | Assignment of Assignor's Interest |
| Apr 13, 2011 Reel 26114, frame 102 | HRH Newco Corporation | Homerun Holdings Corporation | Change of Name |
| Dec 10, 2015 Reel 37261, frame 651 | Homerun Holdings Incorporated | Qmotion Incorporated | Change of Name |
| Jan 28, 2016 Reel 37608, frame 688 | Qmotion Incorporated | The Watt Stopper, Inc. | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 425 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
137
later US patents cite this one
That is top 5% of utility patents granted in 2012 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.