Collateral for a security interest recorded Jul 21, 2022 (The Bank of Nova Scotia).
Lapsed Apr 3, 2026 on the fee record · High confidence
20-year base term ends Jun 6, 2032
Second maintenance fee unpaid; grace period ended.
Held by Quadlogic Controls Corporation
Filed Jan 28, 2016 as application 15/008,567 · Granted Apr 3, 2018
Base term, 20 years from filing, plus 164 days of patent term adjustment (USPTO delay)
Today
Lapsed Apr 3, 2026
2012
2032
Clock starts
Jun 6, 2012
Jun 6, 2012
No longer in force
Apr 3, 2026
Apr 3, 2026
Granted
Apr 3, 2018
Apr 3, 2018
Term would have run to
Nov 17, 2032
Nov 17, 2032
base term
patent term adjustment
after the term ends
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
164
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
10
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 Nov 17, 2032: its 20-year base term plus 164 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 Jun 6, 2012, when application 13/489,922, the earliest non-provisional in its chain, was filed (this one was filed Jan 28, 2016) | Jun 6, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +164 days, USPTO patent term adjustment record | Nov 17, 2032 | 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 | lapsed Apr 3, 2026 | High confidence |
| Computed term end | The steps above, in order | Apr 3, 2026 | 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 | this patent Apr 2026 | Apr 2026 |
| US 10,281,509 | In force 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 |
|---|---|---|---|
| Feb 11, 2021 Reel 55235, frame 269 | 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
Note
The 164 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2018 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.