Collateral for a security interest recorded Jun 30, 2025 (UBS AG, Stamford Branch).
Term ends Aug 8, 2037 · High confidence
20-year base term ends Aug 8, 2037
Held by Sonicwall Inc.
Filed Aug 8, 2017 as application 15/671,445 · Granted Dec 22, 2020
Base term, 20 years from filing
Today
2017
2037
Clock starts
Aug 8, 2017
Aug 8, 2017
Term ends
Aug 8, 2037
Aug 8, 2037
Granted
Dec 22, 2020
Dec 22, 2020
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.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
6
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. 1 of 3 maintenance fees is paid so far. 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 Aug 8, 2017, when this application, 15/671,445, was filed | Aug 8, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 8, 2037 | High confidence |
This family
| US 10,873,589 | this patent Aug 2037 | Aug 2037 |
| Application PCT/US2018/045814 | PCT application no patent term | no patent term |
| US 11,558,405 | In force Aug 2037 | Aug 2037 |
| US 12,058,154 | In force no later than Aug 2037 | no later than Aug 2037 |
| US 12,647,433 | In force Aug 2037 | Aug 2037 |
| Application 19/564,118 | Pending 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 |
|---|---|---|---|
| Aug 8, 2017 Reel 43229, frame 541 | Cheetancheri, Senthil; Dubrovsky, Alex; Holagi, Sachin | Sonicwall Inc. | Assignment of Assignor's Interest |
| Jun 30, 2025 Reel 71777, frame 641 | Sonicwall US Holdings Inc. | UBS AG, Stamford Branch, as Collateral Agent | First Lien IP Supplement |
| Jul 9, 2026 Reel 75961, frame 907 | Sonicwall US Holdings Inc.; Sonicwall Inc.; Banyan Security, Inc. | UBS AG, Stamford Branch | 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
Aug 2037
Term ends Aug 8, 2037. Maintenance fees still fall due before then
Citations
31
later US patents cite this one
That is top 10% of utility patents granted in 2020 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.