Term ended Aug 26, 2024 · Medium confidence

Computed 20-year base term

Why Medium: A parent in the chain could not be resolved.

Held by Danfoss Power Electronics A/S

Filed Dec 11, 2006 as application 11/609,101 · Granted Dec 7, 2010

Base term, 20 years from filing

Today

20 years from filing

Term ended Aug 26, 2024

2004 2026

Clock starts
Aug 26, 2004

Term ended
Aug 26, 2024

Granted
Dec 7, 2010

base term 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

None

Term adjustment

No prosecution delay on this record.

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.

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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Aug 26, 2004, when application 10/926,513, the earliest non-provisional in its chain, was filed (this one was filed Dec 11, 2006); a parent in its chain could not be resolved (the next row)	Aug 26, 2024	High confidence
Continuity chain	A parent in the chain could not be resolved	dated from this application's own claim	Medium confidence
Patent term adjustment	None on file	no change	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	term ended	High confidence
Computed term end	The steps above, in order	Aug 26, 2024	Medium confidence

This family

US 7,874,808	Lapsed on the fee record Jan 2023	Jan 2023
US 8,019,479	In force 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	this patent 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 12, 2007 Reel 19005, frame 719	Stiles JR,. Robert W.; Berthelsen, Lars Hoffmann; Westermann-rasmussen, Peter; Kjaer, Gert; Lungeanu, Florin	Pentair Water Pool and S.p.A., Inc.; Danfoss Low Power Drives a Division of Danfoss Drives A/S	Assignment of Assignor's Interest
Mar 12, 2007 reel/frame not recorded	Stiles JR,. Robert W.; Kjaer, Gert; Lungeanu, Florin; Berthelsen, Lars Hoffmann; Westermann-rasmussen, Peter	Pentair Water Pool and S.p.A., Inc.	Assignment of Assignor's Interest
Mar 12, 2007 reel/frame not recorded	Stiles JR,. Robert W.; Kjaer, Gert; Lungeanu, Florin; Berthelsen, Lars Hoffmann; Westermann-rasmussen, Peter	Danfoss Low Power Drives a Division of Danfoss Drives A/S	Assignment of Assignor's Interest
Dec 10, 2019 Reel 51240, frame 490	Stiles, Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Cox, Everett; Steen, Donald; Murphy, Kevin; Woodcock, Walter J., JR.; 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 Drives A/S	Assignment of Assignor's Interest
Dec 10, 2019 Reel 51240, frame 555	Danfoss Drives A/S	Danfoss Power Electronics A/S	Change of Name
Dec 10, 2019 reel/frame not recorded	Cox, Everett; Hruby, Daniel J.; Robol, Ronald B.; Steen, Donald; Stiles, Robert W.; Yahnker, Christopher; Woodcock, Walter J., JR.; 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
Dec 10, 2019 reel/frame not recorded	Cox, Everett; Hruby, Daniel J.; Robol, Ronald B.; Steen, Donald; Stiles, Robert W.; Yahnker, Christopher; Woodcock, Walter J., JR.; Murphy, Kevin; Hansen, Arne Fink; Runarsson, Einar Kjartan; Westermann-rasmussen, Peter; Harvest, Nils-ole; Kjaer, Gert; Lungeanu, Florin; Morando, Alberto; Berthelsen, Lars Hoffmann	Danfoss Drives 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.

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Alerts on its grants, lapses and transfers.

Citations

190

later US patents cite this one

That is top 5% of utility patents granted in 2010 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.

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