Collateral for a security interest recorded Jun 22, 2023 (Blue Torch Finance, LLC).
Lapsed Jan 26, 2025 on the fee record · High confidence
20-year base term ends May 27, 2035
First maintenance fee unpaid; grace period ended.
Held by Quantum Corporation
Filed May 27, 2015 as application 14/722,809 · Granted Jan 26, 2021
Base term, 20 years from filing, plus 457 days of patent term adjustment (USPTO delay)
Today
Lapsed Jan 26, 2025
2015
2036
Clock starts
May 27, 2015
May 27, 2015
No longer in force
Jan 26, 2025
Jan 26, 2025
Granted
Jan 26, 2021
Jan 26, 2021
Term would have run to
Aug 26, 2036
Aug 26, 2036
base term
patent term adjustment
after the term ends
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
457
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
3
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 Aug 26, 2036: its 20-year base term plus 457 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 May 27, 2015, when this application, 14/722,809, was filed | May 27, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +457 days, USPTO patent term adjustment record | Aug 26, 2036 | 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 | 0 of 3 maintenance fees paid | lapsed Jan 26, 2025 | High confidence |
| Computed term end | The steps above, in order | Jan 26, 2025 | High confidence |
This family
| US 10,903,858 | this patent Jan 2025 | Jan 2025 |
| US 11,398,836 | In force May 2035 | May 2035 |
| US 11,626,890 | In force May 2035 | May 2035 |
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 |
|---|---|---|---|
| May 27, 2015 Reel 35723, frame 278 | Saliba, George | Quantum Corporation | Assignment of Assignor's Interest |
| Oct 21, 2016 Reel 40451, frame 183 | Quantum Corporation | TCW Asset Management Company LLC, as Agent | Security Interest |
| Oct 25, 2016 Reel 40473, frame 378 | Quantum Corporation | Pnc Bank, National Association | Security Interest |
| Dec 27, 2018 Reel 47988, frame 642 | TCW Asset Management Company LLC, as Agent | Quantum Corporation | Release of Security Interest |
| Dec 27, 2018 Reel 49153, frame 518 | Quantum Corporation, As Grantor; Quantum Lto Holdings, LLC, as Grantor | U.S. Bank National Association, as Agent | Security Interest |
| Jan 8, 2019 Reel 48029, frame 525 | Quantum Corporation | Pnc Bank, National Association | Security Interest |
| Aug 10, 2021 Reel 57142, frame 252 | U.S. Bank National Association | Quantum Corporation; Quantum Lto Holdings, LLC | Release of Security Interest |
| Aug 10, 2021 reel/frame not recorded | U.S. Bank National Association | Quantum Corporation | Release of Security Interest |
| Aug 10, 2021 reel/frame not recorded | U.S. Bank National Association | Quantum Lto Holdings, LLC | Release of Security Interest |
| Jun 22, 2023 Reel 64069, frame 563 | Quantum Corporation; Quantum Lto Holdings, LLC | Blue Torch Finance, LLC | Supplement to Intellectual Property Security Agreement |
| Apr 24, 2025 Reel 71019, frame 850 | Blue Torch Finance LLC, as Agent for the Secured Parties | Alter Domus (US) LLC, as Agent for the Secured Parties | Assignment of Assignor's Interest |
| Aug 19, 2025 Reel 72542, frame 594 | PNC Bank, National Association, as Agent | Quantum Corporation | Termination and Release of Amended and Restated Intellectual Property Security Agreement at Reel/Frame No. 48029/0525 |
| Oct 8, 2025 Reel 73061, frame 454 | PNC Bank, National Association, as Agent | Quantum Corporation | Termination and Release of Intellectual Property Security Agreement at Reel/Frame No. 40473/0378 |
| Dec 18, 2025 Reel 74024, frame 84 | Quantum Corporation | U.S. Bank Trust Company, National Association, as Agent | Intellectual Property Security Agreement |
| Jul 3, 2026 Reel 75901, frame 285 | U.S. Bank Trust Company, National Association | Quantum Corporation; Quantum Lto Holdings, LLC | Release of Security Interest |
| Jul 3, 2026 Reel 76712, frame 936 | Alter Domus (US) LLC | Quantum Corporation; Quantum Lto Holdings, LLC | Release of Security Interest |
| Jul 3, 2026 reel/frame not recorded | U.S. Bank Trust Company, National Association | Quantum Corporation | Release of Security Interest |
| Jul 3, 2026 reel/frame not recorded | U.S. Bank Trust Company, National Association | Quantum Lto Holdings, LLC | Release of Security Interest |
| Jul 3, 2026 reel/frame not recorded | Alter Domus (US) LLC | Quantum Corporation | Release of Security Interest |
| Jul 3, 2026 reel/frame not recorded | Alter Domus (US) LLC | Quantum Lto Holdings, LLC | Release of 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 457 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is above the median of utility patents granted in 2021 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.