Term ends Nov 14, 2028 · High confidence
20-year base term ended Aug 26, 2024
Held by Pentair Water Pool and S.p.A., Inc. and Danfoss Low Power Drives, a Division of Danfoss Drive A/S
Filed Nov 23, 2005 as application 11/286,888 · Granted Sep 13, 2011
Base term plus 1541 days of patent term adjustment (USPTO delay)
Today
2004
2028
Clock starts
Aug 26, 2004
Aug 26, 2004
Term ends
Nov 14, 2028
Nov 14, 2028
Granted
Sep 13, 2011
Sep 13, 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
1,541
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.
41
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 1541 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 Aug 26, 2004, when application 10/926,513, the earliest non-provisional in its chain, was filed (this one was filed Nov 23, 2005) | Aug 26, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1541 days, USPTO patent term adjustment record | Nov 14, 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 | Nov 14, 2028 | High confidence |
This family
| US 7,874,808 | Lapsed on the fee record Jan 2023 | Jan 2023 |
| US 8,019,479 | this patent Nov 2028 | Nov 2028 |
| US 8,469,675 | Lapsed on the fee record Jun 2025 | Jun 2025 |
| US 8,480,373 | In force Jun 2027 | Jun 2027 |
| US 7,854,597 | Lapsed on the fee record Dec 2022 | Dec 2022 |
| US 7,686,589 | Term ended Apr 2025 | Apr 2025 |
| US 7,845,913 | Term ended Aug 2024 | Aug 2024 |
| US 8,602,745 | In force Mar 2028 | Mar 2028 |
8 of 41 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 |
|---|---|---|---|
| Mar 3, 2006 reel/frame not recorded | Cox, Everett; Hruby, Daniel J.; Robol, Ronald B.; Steen, Donald; Stiles, Robert W.; Yahnker, Christopher; Woodcock, JR., Walter J.; Murphy, Kevin; Hansen, Arne Fink; Runarsson, Einar Kjartan; Westermann-rasmussen, Peter; Harvest, Nils-ole; Kjaer, Gert; Lungeanu, Florin; Morando, Alberto; Berthelsen, Lars Hoffmann | Pentair Water Pool and S.p.A., Inc. | Assignment of Assignor's Interest |
| Mar 3, 2006 reel/frame not recorded | Cox, Everett; Hruby, Daniel J.; Robol, Ronald B.; Steen, Donald; Stiles, Robert W.; Yahnker, Christopher; Woodcock, JR., Walter J.; Murphy, Kevin; Hansen, Arne Fink; Runarsson, Einar Kjartan; Westermann-rasmussen, Peter; Harvest, Nils-ole; Kjaer, Gert; Lungeanu, Florin; Morando, Alberto; Berthelsen, Lars Hoffmann | Danfoss Low Power Drives, a Division of Danfoss Drive A/S | Assignment of Assignor's Interest |
| Mar 3, 2006 Reel 17622, frame 772 | Stiles, Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Cox, Everett; Steen, Donald; Murphy, Kevin; Woodcock, JR., Walter J.; Hruby, Daniel J.; Westermann-rasmussen, Peter; Kjaer, Gert; Runarsson, Einar Kjartan; Hansen, Arne Fink; Morando, Alberto; Lungeanu, Florin; Harvest, Nils-ole | Pentair Water Pool and S.p.A., Inc.; Danfoss Low Power Drives, a Division of Danfoss Drive A/S | 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.
What's changing
Nov 2028
Term ends Nov 14, 2028. No further fees fall due before then
Note
The 1541 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
206
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
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.