Term ended Aug 14, 2026 · High confidence

Computed 20-year base term

Held by Hitachi Vantara, Ltd.

Filed Nov 13, 2009 as application 12/617,765 · Granted Mar 1, 2011

Base term, 20 years from filing

Today

20 years from filing

Term ended Aug 14, 2026

2006 2026

Clock starts
Aug 14, 2006

Term ended
Aug 14, 2026

Granted
Mar 1, 2011

base term after the term ends fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 7,640,390, to Aug 14, 2026. The term already ends on or before that date, so the cap shortened nothing.

3 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.

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. All three maintenance fees were paid, so no fee lapse ended it. 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 Aug 14, 2006, when application 11/503,217, the earliest non-provisional in its chain, was filed (this one was filed Nov 13, 2009)	Aug 14, 2026	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 7,640,390)	resolves to Aug 14, 2026, no earlier than this term, so no change	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	3 of 3 maintenance fees paid	term ended	High confidence
Computed term end	The steps above, in order	Aug 14, 2026	High confidence

This family

US 7,640,390	In force Jun 2027	Jun 2027
US 7,899,981	this patent Aug 2026	Aug 2026
US 8,924,637	Term ended Aug 2026	Aug 2026

3 of 5 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
Aug 20, 2024 Reel 69518, frame 761	Hitachi, Ltd.	Hitachi Vantara, Ltd.	Company Split

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.

Terminal disclaimer

A terminal disclaimer resolved from the filed document, referencing US 7,640,390, ends no earlier than this term, so it caps nothing.

Citations

later US patents cite this one

That is below the median of utility patents granted in 2011 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.

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