Also listed on Eaton Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 7, 2029 · High confidence
20-year base term ends Mar 5, 2029
Held by Eaton Intelligent Power Limited
Filed May 21, 2010 as application 12/785,231 · Granted Feb 19, 2013
Base term plus 277 days of patent term adjustment (USPTO delay)
Today
2009
2029
Clock starts
Mar 5, 2009
Mar 5, 2009
Term ends
Dec 7, 2029
Dec 7, 2029
Granted
Feb 19, 2013
Feb 19, 2013
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
277
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
2
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 277 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 5, 2009, when application 12/398,429, the earliest non-provisional in its chain, was filed (this one was filed May 21, 2010) | Mar 5, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +277 days, USPTO patent term adjustment record | Dec 7, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 7, 2029 | High confidence |
This family
| US 7,744,042 | In force Mar 2029 | Mar 2029 |
| US 8,376,289 | this patent Dec 2029 | Dec 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 |
|---|---|---|---|
| Aug 30, 2010 Reel 24911, frame 739 | Heath, Richard W. | Nibco Inc. | Assignment of Assignor's Interest |
| Jan 16, 2013 Reel 29641, frame 257 | Nibco Inc. | Cooper B-Line, Inc. | Assignment of Assignor's Interest |
| Nov 7, 2018 Reel 47441, frame 577 | Cooper B-Line, Inc. | Eaton Intelligent Power 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
Dec 2029
Term ends Dec 7, 2029. No further fees fall due before then
Note
The 277 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
7
later US patents cite this one
That is below the median of utility patents granted in 2013 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.