Term ends Jul 11, 2030 · Medium confidence
20-year base term ends Oct 2, 2029
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,726,184), so the cap could be lower.
Held by Danfoss Power Electronics A/S
Filed Jul 17, 2017 as application 15/652,097 · Granted Jul 28, 2020
Base term plus 282 days of patent term adjustment (USPTO delay)
Today
2009
2030
Clock starts
Oct 2, 2009
Oct 2, 2009
Term ends
Jul 11, 2030
Jul 11, 2030
Granted
Jul 28, 2020
Jul 28, 2020
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
282
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,313,306, US 9,726,184, to Jul 11, 2030. The term already ends on or before that date, so the cap shortened nothing.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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 282 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 1 of 2 maintenance fees is paid so far. 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 Oct 2, 2009, when application 12/572,774, the earliest non-provisional in its chain, was filed (this one was filed Jul 17, 2017) | Oct 2, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +282 days, USPTO patent term adjustment record | Jul 11, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,313,306, US 9,726,184) | resolves to Jul 11, 2030, no earlier than this term, so no change | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 11, 2030 | Medium confidence |
This family
| US 8,313,306 | In force Nov 2030 | Nov 2030 |
| US 8,602,743 | In force Oct 2029 | Oct 2029 |
| US 9,726,184 | In force no later than Apr 2031 | no later than Apr 2031 |
| US 10,724,263 | this patent Jul 2030 | Jul 2030 |
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 6, 2019 Reel 51206, frame 733 | Stiles, Robert W., JR.; Berthelsen, Lars Hoffmann | Pentair Water Pool and S.p.A., Inc.; Danfoss Drives A/S | Assignment of Assignor's Interest |
| Dec 6, 2019 Reel 51219, frame 259 | Danfoss Drives A/S | Danfoss Power Electronics A/S | Change of Name |
| Dec 6, 2019 reel/frame not recorded | Stiles, Robert W., JR.; Berthelsen, Lars Hoffmann | Pentair Water Pool and S.p.A., Inc. | Assignment of Assignor's Interest |
| Dec 6, 2019 reel/frame not recorded | Stiles, Robert W., JR.; 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.
What's changing
Jul 2030
Term ends Jul 11, 2030. Maintenance fees still fall due before then
Note
The 282 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,313,306, US 9,726,184, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2020 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.