Term ends Apr 16, 2029 · High confidence
20-year base term ended Apr 27, 2026
Held by Zoll Circulation, Inc.
Filed Apr 27, 2006 as application 11/413,564 · Granted Oct 5, 2010
Base term plus 1085 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Apr 27, 2006
Apr 27, 2006
Term ends
Apr 16, 2029
Apr 16, 2029
Granted
Oct 5, 2010
Oct 5, 2010
base term
patent term adjustment
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
1,085
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
5
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 runs 1085 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Apr 27, 2006, when this application, 11/413,564, was filed | Apr 27, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1085 days, USPTO patent term adjustment record | Apr 16, 2029 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 16, 2029 | High confidence |
This family
| US 7,806,915 | this patent Apr 2029 | Apr 2029 |
| US 8,808,344 | Lapsed on the fee record Aug 2022 | Aug 2022 |
| US 11,311,414 | In force Nov 2026 | Nov 2026 |
3 of 5 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Aug 3, 2006 Reel 18048, frame 536 | Scott, David J.; Brian, Ben F.; Wright, Lloyd F.; Chin, Leo A.; Hollmen, Edward W.; Seegars, Daniel W.; Logan, Mark A. | Radiant Medical, Inc. | Assignment of Assignor's Interest |
| May 7, 2007 Reel 19259, frame 166 | Radiant Medical, Inc. | Bay City Capital Fund IV L.P. | Security Agreement |
| May 21, 2007 Reel 19353, frame 87 | Radiant Medical, Inc. | Horizon Technology Funding Company LLC | Security Agreement |
| Sep 6, 2007 Reel 19781, frame 792 | Horizon Technology Funding Company LLC | Bay City Capital Fund IV, L.P. | Assignment of Assignor's Interest |
| Sep 11, 2007 Reel 19812, frame 192 | Radiant Medical, Inc. | Bay City Capital Fund IV L.P. | Security Agreement |
| Mar 21, 2008 Reel 20684, frame 535 | Radiant Medical, Inc.; Bay City Capital Fund IV, L.P. | Zoll Circulation, Inc. | Assignment of Assignor's Interest |
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.
What's changing
Apr 2029
Term ends Apr 16, 2029. No further fees fall due before then
Note
The 1085 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
186
later US patents cite this one
That is top 5% of utility patents granted in 2010 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.