Term ended Apr 28, 2022 · High confidence
20-year base term ended Jan 2, 2021
No current holder resolved from the recorded chain.
Filed Aug 18, 2003 as application 10/642,135 · Granted Mar 4, 2008
Base term plus 481 days of patent term adjustment (USPTO delay)
Today
Term ended Apr 28, 2022
2001
2026
Clock starts
Jan 2, 2001
Jan 2, 2001
Term ended
Apr 28, 2022
Apr 28, 2022
Granted
Mar 4, 2008
Mar 4, 2008
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
481
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.
17
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 481 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Jan 2, 2001, when application 09/753,758, the earliest non-provisional in its chain, was filed (this one was filed Aug 18, 2003) | Jan 2, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +481 days, USPTO patent term adjustment record | Apr 28, 2022 | 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Apr 28, 2022 | High confidence |
This family
| US 6,609,025 | Term ended Jan 2021 | Jan 2021 |
| US 7,340,306 | this patent Apr 2022 | Apr 2022 |
| US 7,751,891 | In force Dec 2027 | Dec 2027 |
| US 8,600,521 | In force May 2030 | May 2030 |
| US 7,561,918 | Term ended Feb 2026 | Feb 2026 |
| US 7,310,557 | Term ended Aug 2026 | Aug 2026 |
| US 7,835,796 | In force Nov 2026 | Nov 2026 |
| US 7,711,419 | In force Jun 2027 | Jun 2027 |
8 of 17 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 |
|---|---|---|---|
| Jun 17, 2020 Reel 53673, frame 675 | LivaNova USA, Inc. | Ares Capital Corporation, As Collateral Agent | Patent Security Agreement |
| Dec 30, 2020 Reel 54881, frame 784 | LivaNova USA, Inc. | Acf Finco I LP, as Collateral Agent | Patent Security Agreement |
| Aug 16, 2021 Reel 57189, frame 1 | Ares Capital Corporation, as Agent for the Lenders | LivaNova USA, Inc. | Release of Security Interest |
| Aug 16, 2021 Reel 57188, frame 1 | LivaNova USA, Inc. | Goldman Sachs Bank USA, as Collateral Agent | Security Interest |
| Sep 20, 2021 Reel 57552, frame 378 | Acf Finco I LP | LivaNova USA, Inc. | Release of Security 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 481 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
298
later US patents cite this one
That is top 5% of utility patents granted in 2008 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.