Lapsed Jun 23, 2021 on the fee record · High confidence
20-year base term ended Dec 7, 2021
Third maintenance fee unpaid; grace period ended.
Held by Tsunami Medtech, LLC
Filed Apr 22, 2004 as application 10/830,372 · Granted Jun 23, 2009
Base term, 20 years from filing, plus 444 days of patent term adjustment (USPTO delay)
Today
Lapsed Jun 23, 2021
2001
2026
Clock starts
Dec 7, 2001
Dec 7, 2001
No longer in force
Jun 23, 2021
Jun 23, 2021
Granted
Jun 23, 2009
Jun 23, 2009
Term would have run to
Feb 24, 2023
Feb 24, 2023
base term
patent term adjustment
after the term ends
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
444
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
40
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 Feb 24, 2023: its 20-year base term plus 444 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 Dec 7, 2001, when application 10/017,582, the earliest non-provisional in its chain, was filed (this one was filed Apr 22, 2004) | Dec 7, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +444 days, USPTO patent term adjustment record | Feb 24, 2023 | 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 | 2 of 3 maintenance fees paid | lapsed Jun 23, 2021 | High confidence |
| Computed term end | The steps above, in order | Jun 23, 2021 | High confidence |
This family
| US 6,508,816 | Term ended Aug 2018 | Aug 2018 |
| US 6,669,694 | Term ended Dec 2021 | Dec 2021 |
| US 6,911,028 | Term ended Aug 2018 | Aug 2018 |
| US 7,674,259 | Term ended no later than Dec 2022 | no later than Dec 2022 |
| US 7,549,987 | this patent Jun 2021 | Jun 2021 |
| US 7,892,229 | Term ended Aug 2022 | Aug 2022 |
| US 8,016,823 | Term ended May 2022 | May 2022 |
| US 8,444,636 | Term ended Jul 2023 | Jul 2023 |
8 of 40 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 |
|---|---|---|---|
| Nov 7, 2008 Reel 21804, frame 902 | Shadduck, John H. | Tsunami Medtech, LLC | Assignment of Assignor's Interest |
| Oct 13, 2017 Reel 44261, frame 696 | Aegea Medical Inc. | Oxford Finance LLC, as Collateral Agent and as a Lender | Security Interest |
| Mar 1, 2018 Reel 45482, frame 1 | Oxford Finance LLC, as Collateral Agent | Aegea Medical 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 444 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
385
later US patents cite this one
That is top 1% of utility patents granted in 2009 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.