Lapsed Mar 24, 2024 on the fee record · High confidence
20-year base term ends Feb 20, 2029
First maintenance fee unpaid; grace period ended.
Held by Tsunami Medtech, LLC
Filed Feb 13, 2018 as application 15/895,838 · Granted Mar 24, 2020
Base term, 20 years from filing
Today
Lapsed Mar 24, 2024
2009
2029
Clock starts
Feb 20, 2009
Feb 20, 2009
No longer in force
Mar 24, 2024
Mar 24, 2024
Granted
Mar 24, 2020
Mar 24, 2020
Term would have run to
Feb 20, 2029
Feb 20, 2029
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,924,992, to Feb 20, 2029. The term already ends on or before that date, so the cap shortened nothing.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
10
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 20, 2029: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Feb 20, 2009, when application 12/389,808, the earliest non-provisional in its chain, was filed (this one was filed Feb 13, 2018) | Feb 20, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,924,992) | resolves to Feb 20, 2029, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | lapsed Mar 24, 2024 | High confidence |
| Computed term end | The steps above, in order | Mar 24, 2024 | High confidence |
This family
| US 9,924,992 | Lapsed on the fee record Mar 2022 | Mar 2022 |
| US 8,721,632 | Lapsed on the fee record May 2022 | May 2022 |
| US 10,548,653 | In force Jul 2030 | Jul 2030 |
| US 10,595,925 | this patent Mar 2024 | Mar 2024 |
| US 11,284,932 | In force Feb 2029 | Feb 2029 |
| US 11,179,187 | In force no later than Feb 2029 | no later than Feb 2029 |
| US 11,478,291 | In force Feb 2029 | Feb 2029 |
| US 11,141,210 | In force no later than Feb 2029 | no later than Feb 2029 |
8 of 10 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 |
|---|---|---|---|
| May 8, 2018 Reel 45743, frame 561 | Hoey, Michael; Shadduck, John H. | Tsunami Medtech, LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,924,992, ends no earlier than this term, so it caps nothing.
Citations
26
later US patents cite this one
That is top 10% of utility patents granted in 2020 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.