Term ended no later than Mar 31, 2025 · Low confidence
20-year base term ended Mar 31, 2025
USPTO later recorded it as expired for non-payment on Jun 23, 2025.
Held by Hitachi Astemo, Ltd.
Filed Dec 15, 2014 as application 14/570,485 · Granted May 16, 2017
Base term, 20 years from filing
Today
Ended no later than Mar 31, 2025
2005
2026
Clock starts
Mar 31, 2005
Mar 31, 2005
Ended no later than
Mar 31, 2025
Mar 31, 2025
Granted
May 16, 2017
May 16, 2017
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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it 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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Low. 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 Dec 15, 2014); a parent in its chain could not be resolved (the next row) | Mar 31, 2025 | 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 | 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 | 1 of 1 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Jun 23, 2025, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | no later than Mar 31, 2025 | Low confidence |
This family
| US 7,630,807 | In force Aug 2028 | Aug 2028 |
| US 8,645,022 | Term ended Oct 2025 | Oct 2025 |
| US 9,650,038 | this patent 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
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Mar 31, 2025. We will not guess the cap.
Citations
10
later US patents cite this one
That is above the median of utility patents granted in 2017 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.