Also listed on Wright Line, LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Aug 9, 2028 · High confidence
20-year base term ended Apr 27, 2026
Held by Eaton Intelligent Power Limited
Filed Apr 29, 2009 as application 12/432,154 · Granted Jul 1, 2014
Base term plus 835 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Apr 27, 2006
Apr 27, 2006
Term ends
Aug 9, 2028
Aug 9, 2028
Granted
Jul 1, 2014
Jul 1, 2014
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
835
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.
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 runs 835 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 Apr 27, 2006, when application 11/412,430, the earliest non-provisional in its chain, was filed (this one was filed Apr 29, 2009) | Apr 27, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +835 days, USPTO patent term adjustment record | Aug 9, 2028 | 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 | Aug 9, 2028 | High confidence |
This family
| US 7,604,535 | In force Apr 2027 | Apr 2027 |
| Application 12/409,647 | Abandoned not computed | not computed |
| US 8,764,528 | this patent Aug 2028 | Aug 2028 |
| US 10,588,245 | In force Apr 2027 | Apr 2027 |
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 |
|---|---|---|---|
| May 20, 2014 Reel 32931, frame 203 | Germagian, Mark; Prunier, John; Olsen, Martin | Wright Line, LLC | Assignment of Assignor's Interest |
| May 20, 2014 Reel 32931, frame 552 | Tresh, Michael; Jackson, Brian; Bednarcik, Edward | Wright Line, LLC | Assignment of Assignor's Interest |
| Dec 1, 2019 Reel 51146, frame 182 | Wright Line LLC | 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
Aug 2028
Term ends Aug 9, 2028. No further fees fall due before then
Note
The 835 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
102
later US patents cite this one
That is top 5% of utility patents granted in 2014 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.