Term ends no later than Sep 6, 2029 · Medium confidence
20-year base term ends Sep 22, 2028
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Signify Holding B.V.
Filed Sep 22, 2008 as application 12/235,116 · Granted Jun 14, 2011
Base term plus 349 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Sep 22, 2008
Sep 22, 2008
Ends no later than
Sep 6, 2029
Sep 6, 2029
Granted
Jun 14, 2011
Jun 14, 2011
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
349
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
10
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 349 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. 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 Sep 22, 2008, when this application, 12/235,116, was filed | Sep 22, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +349 days, USPTO patent term adjustment record | Sep 6, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Sep 6, 2029 | Medium confidence |
This family
| US 7,959,332 | this patent no later than Sep 2029 | no later than Sep 2029 |
| US 8,348,479 | In force Oct 2028 | Oct 2028 |
| US 8,348,477 | In force no later than Sep 2028 | no later than Sep 2028 |
| US 8,789,978 | In force Sep 2028 | Sep 2028 |
| US 8,911,121 | In force Sep 2028 | Sep 2028 |
| US 9,709,253 | In force Sep 2028 | Sep 2028 |
| US 10,634,321 | In force Sep 2028 | Sep 2028 |
| US 11,570,875 | In force Sep 2028 | Sep 2028 |
8 of 10 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 |
|---|---|---|---|
| Dec 5, 2008 Reel 21931, frame 207 | Wegner, Scott David; Tickner, Jerold; Thompson, Evans Edward, III | Cooper Technologies Company | Assignment of Assignor's Interest |
| Jan 12, 2012 Reel 27545, frame 555 | Cooper Technologies Company | Cooper Lighting LLC | Assignment of Assignor's Interest |
| Mar 2, 2012 Reel 27794, frame 455 | Cooper Technologies Company | Cooper Lighting LLC | Corrective Assignment to Correct the Recordation Form Cover Sheet Assignee Address Previously Recorded on Reel 027545 Frame 0555. Assignor(S) Hereby Confirms the Cooper Lighting LLC 1121 Highway 74 South Peachtree City, Ga 30269. |
| Nov 19, 2018 Reel 47543, frame 585 | Cooper Lighting, LLC | Eaton Intelligent Power Limited | Assignment of Assignor's Interest |
| May 18, 2020 Reel 52681, frame 475 | Eaton Intelligent Power Limited | Signify Holding B.V. | Assignment of Assignor's Interest |
| Nov 12, 2020 Reel 55965, frame 721 | Eaton Intelligent Power Limited | Signify Holding B.V. | Corrective Assignment to Correct the Application Numbers 12183490, 12183499, 12494944, 12961315, 13528561, 13600790, 13826197, 14605880, 15186648, Recorded in Error Previously Recorded on Reel 052681 Frame 0475. 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
Sep 2029
Term ends no later than Sep 6, 2029. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 349 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Sep 6, 2029. We will not guess the cap.
Citations
226
later US patents cite this one
That is top 5% of utility patents granted in 2011 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.