The Patent Finder
US

Method of Locating the Tip of a Central Venous Catheter

US 8,858,455 Term ended
OverviewFamilySources & methods

Term ended Oct 23, 2026 · Medium confidence

Why Medium: A parent in the chain could not be resolved.

Filed Aug 16, 2013 as application 13/969,265 · Granted Oct 14, 2014
Base term, 20 years from filing
Today
20 years from filing
Term ended Oct 23, 2026
2006 2026
Clock starts
Oct 23, 2006
Term ended
Oct 23, 2026
Granted
Oct 14, 2014
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.
None
Terminal disclaimer
No disclaimer on this record.
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.
9
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. All three maintenance fees were paid, so no fee lapse ended it. 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Oct 23, 2006, when application 11/552,094, the earliest non-provisional in its chain, was filed (this one was filed Aug 16, 2013); a parent in its chain could not be resolved (the next row)Oct 23, 2026High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderOct 23, 2026Medium confidence

This family

US 7,794,407In force
Sep 2028
Sep 2028
Application PCT/US2009/033116PCT application
no patent term
no patent term
US 8,388,546In force
Jul 2028
Jul 2028
US 8,512,256In force
Nov 2026
Nov 2026
US 8,774,907In force
Nov 2026
Nov 2026
US 8,858,455this patent
Oct 2026
Oct 2026
US 9,265,443Term ended
Oct 2026
Oct 2026
US 9,345,422Term ended
Oct 2026
Oct 2026
8 of 9 applications in this family shown, earliest filings first. 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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited