Term ends Oct 9, 2029 · High confidence
20-year base term ends Oct 9, 2029
Held by Venus Medtech of America Corp.
Filed Oct 9, 2009 as application 12/576,970 · Granted May 31, 2011
Base term, 20 years from filing
Today
2009
2029
Clock starts
Oct 9, 2009
Oct 9, 2009
Term ends
Oct 9, 2029
Oct 9, 2029
Granted
May 31, 2011
May 31, 2011
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
25
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 is its 20-year base term, with no adjustment for 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 Oct 9, 2009, when this application, 12/576,970, was filed | Oct 9, 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 | 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 | Oct 9, 2029 | High confidence |
This family
| US 7,744,620 | In force May 2028 | May 2028 |
| US 7,618,432 | In force Dec 2026 | Dec 2026 |
| US 7,951,111 | this patent Oct 2029 | Oct 2029 |
| Application PCT/US2009/060239 | PCT application no patent term | no patent term |
| US 8,486,102 | Term ended Dec 2024 | Dec 2024 |
| US 8,900,264 | In force Oct 2030 | Oct 2030 |
| US 9,242,081 | In force Jun 2032 | Jun 2032 |
| Application PCT/US2011/051457 | PCT application no patent term | no patent term |
8 of 25 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 |
|---|---|---|---|
| Dec 1, 2009 Reel 23587, frame 693 | Drasler, William; Pedersen, Wes; Ungs, Mark | Intervalve, Inc. | Assignment of Assignor's Interest |
| Jan 15, 2016 Reel 37500, frame 429 | Intervalve, Inc. | Oxford Finance LLC | Security Interest |
| Oct 25, 2017 Reel 43946, frame 420 | Oxford Finance LLC | Intervalve, Inc. | Release of Security Interest |
| Sep 12, 2018 Reel 46855, frame 290 | Intervalve, Inc. | Intervalve Medical, Inc. | Assignment of Assignor's Interest |
| Jul 21, 2025 Reel 71767, frame 833 | Intervalve Medical, Inc. | Venus Medtech of America Corp. | 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
Oct 2029
Term ends Oct 9, 2029. No further fees fall due before then
Citations
284
later US patents cite this one
That is top 5% of utility patents granted in 2011 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.