Lapsed Aug 19, 2022 on the fee record · High confidence
20-year base term ended Apr 27, 2026
Second maintenance fee unpaid; grace period ended.
Held by Zoll Circulation, Inc.
Filed Oct 4, 2010 as application 12/897,637 · Granted Aug 19, 2014
Base term, 20 years from filing, plus 529 days of patent term adjustment (USPTO delay)
Today
Lapsed Aug 19, 2022
2006
2027
Clock starts
Apr 27, 2006
Apr 27, 2006
No longer in force
Aug 19, 2022
Aug 19, 2022
Granted
Aug 19, 2014
Aug 19, 2014
Term would have run to
Oct 8, 2027
Oct 8, 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
529
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
Its term would have run to Oct 8, 2027: its 20-year base term plus 529 days of term adjustment for prosecution delay. 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 application 11/413,564, the earliest non-provisional in its chain, was filed (this one was filed Oct 4, 2010) | Apr 27, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +529 days, USPTO patent term adjustment record | Oct 8, 2027 | 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 | 1 of 3 maintenance fees paid | lapsed Aug 19, 2022 | High confidence |
| Computed term end | The steps above, in order | Aug 19, 2022 | High confidence |
This family
| US 7,806,915 | In force Apr 2029 | Apr 2029 |
| US 8,808,344 | this patent 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 |
|---|---|---|---|
| Jan 17, 2020 Reel 51543, frame 619 | Radiant Medical, Inc. | Bay City Capital Fund IV L.P. | Security Interest |
| Jan 17, 2020 Reel 51543, frame 547 | Radiant Medical, Inc. | Horizon Technology Funding Company LLC | Security Interest |
| Jan 17, 2020 Reel 51543, frame 582 | Horizon Technology Funding Company LLC | Bay City Capital Fund IV L.P. | Assignment of Assignor's Interest |
| Jan 17, 2020 Reel 51543, frame 666 | Radiant Medical, Inc.; Bay City Capital Fund IV L.P. | Zoll Circulation, Inc. | Assignment of Assignor's Interest |
| Jan 17, 2020 Reel 51627, frame 893 | 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 |
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
Note
The 529 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
41
later US patents cite this one
That is top 25% 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.