Term ends Feb 19, 2029 · High confidence
20-year base term ends Feb 19, 2029
Held by Hitachi Astemo, Ltd.
Filed Nov 18, 2019 as application 16/686,310 · Granted Mar 30, 2021
Base term, 20 years from filing
Today
2009
2029
Clock starts
Feb 19, 2009
Feb 19, 2009
Term ends
Feb 19, 2029
Feb 19, 2029
Granted
Mar 30, 2021
Mar 30, 2021
base term
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,917,509, to Feb 19, 2029. The term already ends on or before that date, so the cap shortened nothing.
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.
8
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 resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 1 of 1 maintenance fees is paid so far. 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 Feb 19, 2009, when application 12/388,910, the earliest non-provisional in its chain, was filed (this one was filed Nov 18, 2019) | Feb 19, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,917,509) | resolves to Feb 19, 2029, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 19, 2029 | High confidence |
This family
| US 7,978,471 | In force Sep 2029 | Sep 2029 |
| US 8,416,574 | Lapsed on the fee record Apr 2025 | Apr 2025 |
| US 8,917,509 | In force Jun 2029 | Jun 2029 |
| US 9,042,101 | In force Feb 2029 | Feb 2029 |
| US 9,137,932 | In force Feb 2029 | Feb 2029 |
| US 9,648,791 | In force Feb 2029 | Feb 2029 |
| US 10,524,398 | In force Feb 2029 | Feb 2029 |
| US 10,966,355 | this patent Feb 2029 | Feb 2029 |
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 8, 2021 Reel 58519, frame 151 | Hitachi, Ltd. | Hitachi Automotive Systems, Ltd. | Demerger |
| Dec 8, 2021 Reel 58334, frame 633 | 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
Feb 2029
Term ends Feb 19, 2029. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,917,509, 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 2021 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.