Term ended Feb 28, 2025 · High confidence
20-year base term ended Feb 28, 2025
Held by Maxell, Ltd.
Filed Jul 10, 2015 as application 14/796,413 · Granted Feb 23, 2016
Base term, 20 years from filing
Today
Term ended Feb 28, 2025
2005
2026
Clock starts
Feb 28, 2005
Feb 28, 2005
Term ended
Feb 28, 2025
Feb 28, 2025
Granted
Feb 23, 2016
Feb 23, 2016
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,787,456, US 8,923,387, US 8,971,403, US 9,118,924, US 9,277,225, US 9,277,226, US 9,319,687, to Feb 28, 2025. The term already ends on or before that date, so the cap shortened nothing.
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.
13
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. 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 28, 2005, when application 11/066,169, the earliest non-provisional in its chain, was filed (this one was filed Jul 10, 2015) | Feb 28, 2025 | 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 8,787,456, US 8,923,387, US 8,971,403, US 9,118,924, US 9,277,225, US 9,277,226, US 9,319,687) | resolves to Feb 28, 2025, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Feb 28, 2025 | High confidence |
This family
| US 8,787,456 | In force Feb 2029 | Feb 2029 |
| US 8,923,387 | Term ended Feb 2025 | Feb 2025 |
| US 8,971,403 | Term ended Feb 2025 | Feb 2025 |
| US 9,118,924 | Term ended Feb 2025 | Feb 2025 |
| US 9,319,687 | Term ended Feb 2025 | Feb 2025 |
| US 9,277,225 | Term ended Feb 2025 | Feb 2025 |
| US 9,277,226 | Term ended Feb 2025 | Feb 2025 |
| US 9,270,998 | this patent Feb 2025 | Feb 2025 |
8 of 13 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 |
|---|---|---|---|
| Jan 25, 2018 Reel 45142, frame 208 | Hitachi Maxell, Ltd. | Maxell, Ltd. | Assignment of Assignor's Interest |
| Nov 29, 2021 Reel 58255, frame 579 | Maxell, Ltd. | Maxell Holdings, Ltd. | Merger |
| Dec 3, 2021 Reel 58666, frame 407 | Maxell Holdings, Ltd. | Maxell, 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.
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Alerts on its grants, lapses and transfers.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,787,456, US 8,923,387, US 8,971,403, US 9,118,924, US 9,277,225, US 9,277,226, US 9,319,687, 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 2016 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.