Collateral for a security interest recorded Jul 10, 2026 (Acquiom Agency Services LLC).
Term ends Jul 26, 2031 · High confidence
20-year base term ends Mar 16, 2030
Held by Corvil Limited
Filed Mar 16, 2010 as application 12/725,207 · Granted Jul 23, 2013
Base term plus 497 days of patent term adjustment (USPTO delay)
Today
2010
2031
Clock starts
Mar 16, 2010
Mar 16, 2010
Term ends
Jul 26, 2031
Jul 26, 2031
Granted
Jul 23, 2013
Jul 23, 2013
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
497
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 497 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 Mar 16, 2010, when this application, 12/725,207, was filed | Mar 16, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +497 days, USPTO patent term adjustment record | Jul 26, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 26, 2031 | 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 |
|---|---|---|---|
| Mar 16, 2010 Reel 24088, frame 986 | Russell, Raymond | Corvil Limited | Assignment of Assignor's Interest |
| Feb 7, 2020 Reel 51753, frame 236 | Corvil Limited | Obsidian Agency Services, Inc., as Collateral Agent | Security Interest |
| Feb 24, 2020 Reel 51909, frame 885 | Pico Quantitative Trading LLC; Spryware, LLC; Corvil Limited; Corvil, Inc. | Western Alliance Bank | Security Interest |
| Jan 29, 2024 Reel 66283, frame 698 | Western Alliance Bank | Pico Quantitative Trading LLC; Spryware, LLC; Corvil Limited; Corvil, Inc.; Pico Quantitative Trading Holdings LLC | Release of Security Interest |
| Jan 29, 2024 reel/frame not recorded | Western Alliance Bank | Pico Quantitative Trading LLC | Release of Security Interest |
| Jan 29, 2024 reel/frame not recorded | Western Alliance Bank | Spryware, LLC | Release of Security Interest |
| Jan 29, 2024 reel/frame not recorded | Western Alliance Bank | Corvil Limited | Release of Security Interest |
| Jan 29, 2024 reel/frame not recorded | Western Alliance Bank | Corvil, Inc. | Release of Security Interest |
| Jan 29, 2024 reel/frame not recorded | Western Alliance Bank | Pico Quantitative Trading Holdings LLC | Release of Security Interest |
| Jul 10, 2026 Reel 75237, frame 764 | Obsidian Agency Services, Inc., as Collateral Agent | Corvil Limited | Release of Security Interest |
| Jul 10, 2026 Reel 75239, frame 94 | Corvil Limited | Acquiom Agency Services LLC, as Collateral Agent | Security 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jul 2031
Term ends Jul 26, 2031. No further fees fall due before then
Note
The 497 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
61
later US patents cite this one
That is top 10% of utility patents granted in 2013 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.