Term ends Dec 11, 2026 · Medium confidence

Computed 20-year base term

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 8,420,603), so the cap could be lower.

Held by .Abraxis Bioscience, LLC

Filed Mar 8, 2013 as application 13/791,009 · Granted Feb 3, 2015

Base term, 20 years from filing · capped by a resolved terminal disclaimer

Today

20 years from filing

Term ends Dec 11, 2026

2007 2027

Clock starts
Mar 29, 2007

Term ends
Dec 11, 2026

Granted
Feb 3, 2015

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.

Capped

Terminal disclaimer

Resolved from the filed document, referencing US 8,415,304, US 8,420,603.

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 resolved from the filed document caps it earlier. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 29, 2007, when application PCT/US2007/065486, the earliest non-provisional in its chain, was filed (this one was filed Mar 8, 2013)	Mar 29, 2027	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 8,415,304, US 8,420,603)	capped to Dec 11, 2026	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	3 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Dec 11, 2026	Medium confidence

This family

Application PCT/US2007/065486	PCT application no patent term	no patent term
US 8,415,304	In force Feb 2028	Feb 2028
US 8,946,169	this patent Dec 2026	Dec 2026
US 9,671,406	In force Dec 2026	Dec 2026

The applications whose file history this site holds. The family may have others.

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

Dec 2026

Term ends Dec 11, 2026. No further fees fall due before then

Disclaimer cap

This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,415,304, US 8,420,603.

Citations

later US patents cite this one

That is below the median of utility patents granted in 2015 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.

Sparc and Methods of Use Thereof