Term ended Oct 7, 2025 · High confidence
20-year base term ended Mar 31, 2025
USPTO later recorded it as expired for non-payment on Mar 9, 2026.
Held by Hitachi Astemo, Ltd.
Filed Oct 7, 2009 as application 12/575,212 · Granted Feb 4, 2014
Base term plus 190 days of patent term adjustment (USPTO delay)
Today
Term ended Oct 7, 2025
2005
2026
Clock starts
Mar 31, 2005
Mar 31, 2005
Term ended
Oct 7, 2025
Oct 7, 2025
Granted
Feb 4, 2014
Feb 4, 2014
base term
patent term adjustment
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
190
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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 190 days past its 20-year base term on prosecution delay. 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 Mar 31, 2005, when application 11/094,660, the earliest non-provisional in its chain, was filed (this one was filed Oct 7, 2009) | Mar 31, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +190 days, USPTO patent term adjustment record | Oct 7, 2025 | 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 | 2 of 2 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Mar 9, 2026, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | Oct 7, 2025 | High confidence |
This family
| US 7,630,807 | In force Aug 2028 | Aug 2028 |
| US 8,645,022 | this patent Oct 2025 | Oct 2025 |
| US 9,650,038 | Term ended no later than Mar 2025 | no later than Mar 2025 |
3 of 4 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 |
|---|---|---|---|
| Nov 29, 2021 Reel 58960, frame 1 | Hitachi, Ltd. | Hitachi Automotive Systems, Ltd. | Demerger |
| Nov 30, 2021 Reel 58481, frame 935 | Hitachi Automotive Systems, Ltd. | Hitachi Astemo, Ltd. | Change of Name |
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
Note
The 190 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
45
later US patents cite this one
That is top 25% 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.