Also listed on Vello Systems, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Feb 1, 2031 · Low confidence
20-year base term ends Feb 1, 2031
Held by Snell Holdings, LLC
Filed Mar 12, 2013 as application 13/796,719 · Granted May 26, 2015
Base term, 20 years from filing
Today
2011
2031
Clock starts
Feb 1, 2011
Feb 1, 2011
Term ends
Feb 1, 2031
Feb 1, 2031
Granted
May 26, 2015
May 26, 2015
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,542,999, to Feb 1, 2031. The term already ends on or before that date, so the cap shortened nothing.
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.
5
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. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 2 of 3 maintenance fees are paid so far. Confidence: Low. 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 1, 2011, when application 13/019,255, the earliest non-provisional in its chain, was filed (this one was filed Mar 12, 2013); a parent in its chain could not be resolved (the next row) | Feb 1, 2031 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,542,999) | resolves to Feb 1, 2031, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Further caveats on record | The record names parents not resolved: 13019255 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Feb 1, 2031 | Low confidence |
This family
| US 8,542,999 | Lapsed on the fee record Sep 2025 | Sep 2025 |
| US 9,042,729 | this patent Feb 2031 | Feb 2031 |
| Application 14/720,362 | Abandoned not computed | not computed |
| Application 15/138,169 | Abandoned not computed | not computed |
| Application 15/439,841 | Abandoned not computed | not computed |
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 30, 2016 Reel 38143, frame 309 | Barnard, Chris Wilhelm; Mylinski, Piotr | Vello Systems, Inc. | Assignment of Assignor's Interest |
| Mar 30, 2016 Reel 38143, frame 311 | 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
Feb 2031
Term ends Feb 1, 2031. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,542,999, ends no earlier than this term, so it caps nothing.
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2015 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.