Lapsed Feb 14, 2021 on the fee record · High confidence

Computed 20-year base term

First maintenance fee unpaid; grace period ended.

Held by Medtronic Ablation Frontiers LLC

Filed Sep 11, 2014 as application 14/483,869 · Granted Feb 14, 2017

Base term, 20 years from filing, plus 83 days of patent term adjustment (USPTO delay)

Today

Lapsed Feb 14, 2021

2006 2026

Clock starts
Jul 11, 2006

No longer in force
Feb 14, 2021

Granted
Feb 14, 2017

Term would have run to
Oct 2, 2026

base term patent term adjustment after the term ends 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

Days of term adjustment

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

No effect

Terminal disclaimer

Resolved from the filed document, referencing US 8,617,156, US 8,834,461, to Oct 2, 2026. The term already ends on or before that date, so the cap shortened nothing.

0 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.

Family applications on record here

Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Oct 2, 2026: its 20-year base term plus 83 days of term 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 Jul 11, 2006, when application 11/484,878, the earliest non-provisional in its chain, was filed (this one was filed Sep 11, 2014)	Jul 11, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+83 days, USPTO patent term adjustment record	Oct 2, 2026	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 8,617,156, US 8,834,461)	resolves to Oct 2, 2026, no earlier than this term, so no change	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	0 of 2 maintenance fees paid	lapsed Feb 14, 2021	High confidence
Computed term end	The steps above, in order	Feb 14, 2021	High confidence

This family

US 8,834,461	Lapsed on the fee record Sep 2026	Sep 2026
US 8,617,156	In force Jun 2027	Jun 2027
US 9,566,113	this patent Feb 2021	Feb 2021

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.

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Alerts on its grants, lapses and transfers.

What's changing

Note

The 83 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Terminal disclaimer

A terminal disclaimer resolved from the filed document, referencing US 8,617,156, US 8,834,461, ends no earlier than this term, so it caps nothing.

Citations

117

later US patents cite this one

That is top 5% of utility patents granted in 2017 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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