Also listed on Vello Systems, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 29, 2028 · High confidence
20-year base term ends May 4, 2027
Held by Snell Holdings, LLC
Filed May 4, 2007 as application 11/744,757 · Granted Aug 10, 2010
Base term plus 605 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
May 4, 2007
May 4, 2007
Term ends
Dec 29, 2028
Dec 29, 2028
Granted
Aug 10, 2010
Aug 10, 2010
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
605
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 605 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 May 4, 2007, when this application, 11/744,757, was filed | May 4, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +605 days, USPTO patent term adjustment record | Dec 29, 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 | High confidence |
| Computed term end | The steps above, in order | Dec 29, 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 |
|---|---|---|---|
| Sep 28, 2007 Reel 19898, frame 391 | Weng, Chia-kai; Way, Winston I. | Opvista Incorporated | Assignment of Assignor's Interest |
| Jan 12, 2010 Reel 23768, frame 657 | Venture Lending & Leasing IV, Inc.; Venture Lending & Leasing V, Inc. | Vello Systems, Inc. | Assignment of Assignor's Interest |
| Jun 16, 2011 Reel 26476, frame 700 | Opvista, Inc. | Venture Lending & Leasing IV, Inc. / Venture Lending & Leasing V, 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
Dec 2028
Term ends Dec 29, 2028. No further fees fall due before then
Note
The 605 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
19
later US patents cite this one
That is above the median of utility patents granted in 2010 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.