Collateral for a security interest recorded Jul 21, 2022 (The Bank of Nova Scotia).
Term ends Jun 6, 2032 · High confidence
20-year base term ends Jun 6, 2032
Held by Quadlogic Controls Corporation
Filed Feb 21, 2018 as application 15/901,533 · Granted May 7, 2019
Base term, 20 years from filing
Today
2012
2032
Clock starts
Jun 6, 2012
Jun 6, 2012
Term ends
Jun 6, 2032
Jun 6, 2032
Granted
May 7, 2019
May 7, 2019
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 9,255,949, US 9,933,465, to Jun 6, 2032. 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.
10
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: 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 Jun 6, 2012, when application 13/489,922, the earliest non-provisional in its chain, was filed (this one was filed Feb 21, 2018) | Jun 6, 2032 | 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 | Disclaimer resolved from the filed document (refs US 9,255,949, US 9,933,465) | resolves to Jun 6, 2032, 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 |
| Computed term end | The steps above, in order | Jun 6, 2032 | High confidence |
This family
| US 7,227,451 | Term ended Aug 2025 | Aug 2025 |
| US 7,596,459 | Term ended May 2026 | May 2026 |
| US 7,948,363 | Lapsed on the fee record May 2023 | May 2023 |
| US 8,026,628 | In force Nov 2026 | Nov 2026 |
| US 8,183,988 | Lapsed on the fee record May 2024 | May 2024 |
| US 9,255,949 | In force Jul 2033 | Jul 2033 |
| US 9,933,465 | Lapsed on the fee record Apr 2026 | Apr 2026 |
| US 10,281,509 | this patent Jun 2032 | Jun 2032 |
8 of 10 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 |
|---|---|---|---|
| Jun 6, 2019 Reel 49394, frame 255 | Swarztrauber, Sayre; Shafrir, Doron | Quadlogic Controls Corporation | Assignment of Assignor's Interest |
| Jul 21, 2022 Reel 60579, frame 877 | Quadlogic Controls Corporation | The Bank of Nova Scotia, as Administrative 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.
What's changing
Jun 2032
Term ends Jun 6, 2032. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,255,949, US 9,933,465, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2019 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.