Lapsed Apr 22, 2026 on the fee record · High confidence
20-year base term ends Feb 21, 2031
Third maintenance fee unpaid; grace period ended.
Held by Snell Holdings, LLC
Filed Feb 21, 2011 as application 13/031,594 · Granted Apr 22, 2014
Base term, 20 years from filing, plus 226 days of patent term adjustment (USPTO delay)
Today
Lapsed Apr 22, 2026
2011
2031
Clock starts
Feb 21, 2011
Feb 21, 2011
No longer in force
Apr 22, 2026
Apr 22, 2026
Granted
Apr 22, 2014
Apr 22, 2014
Term would have run to
Oct 5, 2031
Oct 5, 2031
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
226
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.
11
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 Oct 5, 2031: its 20-year base term plus 226 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 Feb 21, 2011, when this application, 13/031,594, was filed | Feb 21, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +226 days, USPTO patent term adjustment record | Oct 5, 2031 | 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 Apr 22, 2026 | High confidence |
| Computed term end | The steps above, in order | Apr 22, 2026 | High confidence |
This family
| US 9,485,050 | In force no later than Nov 2031 | no later than Nov 2031 |
| US 8,705,741 | this patent Apr 2026 | Apr 2026 |
| Application PCT/US2011/025767 | PCT application no patent term | no patent term |
| US 9,641,278 | In force Jun 2031 | Jun 2031 |
| Application 14/063,955 | Abandoned not computed | not computed |
| Application 14/143,726 | Abandoned not computed | not computed |
| US 10,298,480 | In force Aug 2031 | Aug 2031 |
| Application 15/584,465 | Abandoned not computed | not computed |
8 of 11 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 |
|---|---|---|---|
| Mar 23, 2011 Reel 26013, frame 24 | Voruganti, Pavan; May, Karl | Vello Systems, Inc. | Assignment of Assignor's 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
Note
The 226 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
8
later US patents cite this one
That is above the median of utility patents granted in 2014 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.