Lapsed Sep 16, 2026 on the fee record · High confidence
20-year base term ended Jul 11, 2026
Third maintenance fee unpaid; grace period ended.
Filed Jul 11, 2006 as application 11/484,878 · Granted Sep 16, 2014
Base term, 20 years from filing, plus 553 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Sep 16, 2026
2006
2027
Clock starts
Jul 11, 2006
Jul 11, 2006
No longer in force
Sep 16, 2026
Sep 16, 2026
Granted
Sep 16, 2014
Sep 16, 2014
Term would have run to
Jun 12, 2027
Jun 12, 2027
base term
patent term adjustment
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
553
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,617,156.
2 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.
3
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 Jun 12, 2027: its 20-year base term plus 553 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 this application, 11/484,878, was filed | Jul 11, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +553 days, USPTO patent term adjustment record | Jan 15, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,617,156) | capped to Jun 12, 2027 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | lapsed Sep 16, 2026 | High confidence |
| Computed term end | The steps above, in order | Sep 16, 2026 | High confidence |
This family
| US 8,834,461 | this patent Sep 2026 | Sep 2026 |
| US 8,617,156 | In force Jun 2027 | Jun 2027 |
| US 9,566,113 | Lapsed on the fee record Feb 2021 | Feb 2021 |
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 |
|---|---|---|---|
| Dec 22, 2006 Reel 18686, frame 743 | Werneth, Randell L.; Kunis, Christopher G.; Flaherty, J. Christopher; Sherman, Marshall L. | Ablation Frontiers, Inc. | Assignment of Assignor's Interest |
| Jun 16, 2009 Reel 22824, frame 760 | Ablation Frontiers, Inc. | Medtronic Ablation Frontiers, Inc. | Merger |
| Jun 16, 2009 Reel 22824, frame 856 | Medtronic Ablation Frontiers, Inc. | Medtronic Ablation Frontiers Technologies, LLC | Change of Name |
| Jun 16, 2009 Reel 22824, frame 893 | Medtronic Ablation Frontiers Technologies, LLC | Medtronic Ablation Frontiers, LLC | Change of Name |
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
Note
The 553 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,617,156.
Citations
410
later US patents cite this one
That is top 1% of utility patents granted in 2014 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.