Lapsed Apr 22, 2026 on the fee record · Medium confidence
20-year base term ends Feb 25, 2028
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
Third maintenance fee unpaid; grace period ended.
No current holder resolved from the recorded chain.
Filed Jun 6, 2012 as application 13/490,380 · Granted Apr 22, 2014
Base term, 20 years from filing
Today
Lapsed Apr 22, 2026
2008
2028
Clock starts
Feb 25, 2008
Feb 25, 2008
No longer in force
Apr 22, 2026
Apr 22, 2026
Granted
Apr 22, 2014
Apr 22, 2014
Term would have run to
Feb 25, 2028
Feb 25, 2028
base term
after the term ends
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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
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 Feb 25, 2028: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Medium. 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 Feb 25, 2008, when application 12/036,705, the earliest non-provisional in its chain, was filed (this one was filed Jun 6, 2012) | Feb 25, 2028 | 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 on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | lapsed Apr 22, 2026 | High confidence |
| Computed term end | The steps above, in order | Apr 22, 2026 | Medium confidence |
This family
| US 7,738,212 | In force Apr 2028 | Apr 2028 |
| US 8,213,107 | Lapsed on the fee record Jul 2024 | Jul 2024 |
| US 8,705,199 | this patent Apr 2026 | Apr 2026 |
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 |
|---|---|---|---|
| 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 5, 2021 Reel 57107, frame 1 | Quantum Corporation; Quantum Lto Holdings, LLC | Blue Torch Finance LLC, as Agent | 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 |
| 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.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Apr 22, 2026. We will not guess the cap.
Citations
10
later US patents cite this one
That is above the median of utility patents granted in 2014 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.