Method of Removing a Thrombus from a Blood Vessel

US 9,848,975 Term ended

Overview Sources & methods

Term ended Feb 9, 2026 · High confidence

Computed 20-year base term

Held by Hauser, David L, MR.

Filed Feb 16, 2015 as application 14/623,425 · Granted Dec 26, 2017

Base term plus 321 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ended Feb 9, 2026

2005 2026

Clock starts
Mar 25, 2005

Term ended
Feb 9, 2026

Granted
Dec 26, 2017

base term patent term adjustment 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

321

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

None

Terminal disclaimer

No disclaimer on this record.

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.

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 25, 2005, when the earliest non-provisional application in its chain was filed (this one was filed Feb 16, 2015)	Mar 25, 2025	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+321 days, USPTO patent term adjustment record	Feb 9, 2026	High confidence
Terminal disclaimer cap	None on record	no cap applied	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 9, 2026	High confidence

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.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

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.

Method of Removing a Thrombus from a Blood Vessel

Term ended Feb 9, 2026 · High confidence

20-year base term ended Mar 25, 2025

How we calculated this date

Sources