Also listed on Vello Systems, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 2, 2028 · High confidence
20-year base term ended Oct 13, 2026
Held by Snell Holdings, LLC
Filed Oct 13, 2006 as application 11/580,537 · Granted Mar 20, 2012
Base term plus 720 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Oct 13, 2006
Oct 13, 2006
Term ends
Oct 2, 2028
Oct 2, 2028
Granted
Mar 20, 2012
Mar 20, 2012
base term
patent term adjustment
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
720
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.
This patent's term runs 720 days past its 20-year base term on 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 13, 2006, when this application, 11/580,537, was filed | Oct 13, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +720 days, USPTO patent term adjustment record | Oct 2, 2028 | 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 (reinstated) | High confidence |
| Computed term end | The steps above, in order | Oct 2, 2028 | High confidence |
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 5, 2007 Reel 18718, frame 177 | Way, Winston I.; Lam, Cedric | Opvista Incorporated | Assignment of Assignor's Interest |
| Sep 27, 2007 Reel 19910, frame 285 | Opvista | Venture Lending & Leasing IV, Inc. And | Security Agreement |
| Jan 6, 2010 Reel 23744, frame 810 | Venture Lending & Leasing IV, Inc.; Venture Lending & Leasing V, Inc. | Vello Systems, Inc. | Assignment of Assignor's Interest |
| Jul 24, 2011 Reel 26638, frame 818 | Venture Lending and Leasing IV, Inc.; Venture Lending & Leasing V, Inc. | Vello Systems, Inc. | Release of Security Interest |
| May 28, 2013 Reel 30498, frame 219 | Vello Systems, Inc. | Venture Lending & Leasing VI, Inc.; Venture Lending & Leasing VII, Inc. | Security Agreement |
| May 28, 2013 reel/frame not recorded | Vello Systems, Inc. | Venture Lending & Leasing VI, Inc. | Security Agreement |
| May 28, 2013 reel/frame not recorded | Vello Systems, Inc. | Venture Lending & Leasing VII, Inc. | Security Agreement |
| Dec 15, 2014 Reel 34510, frame 459 | Treq Labs, Inc.; Venture Lending & Leasing | Treq Labs, Inc. | Assignment of Assignor's Interest |
| Sep 7, 2017 Reel 43522, frame 776 | Treq Labs, Inc. | Snell Holdings, 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.
What's changing
Oct 2028
Term ends Oct 2, 2028. No further fees fall due before then
Note
The 720 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
40
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.