Lapsed Aug 23, 2023 on the fee record · High confidence
20-year base term ended Jul 31, 2026
Third maintenance fee unpaid; grace period ended.
Held by SanDisk Technologies LLC
Filed Mar 2, 2009 as application 12/396,461 · Granted Aug 23, 2011
Base term, 20 years from filing, plus 299 days of patent term adjustment (USPTO delay)
Today
Lapsed Aug 23, 2023
2006
2027
Clock starts
Jul 31, 2006
Jul 31, 2006
No longer in force
Aug 23, 2023
Aug 23, 2023
Granted
Aug 23, 2011
Aug 23, 2011
Term would have run to
May 26, 2027
May 26, 2027
base term
patent term adjustment
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
299
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
7
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 May 26, 2027: its 20-year base term plus 299 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 Jul 31, 2006, when application 11/461,369, the earliest non-provisional in its chain, was filed (this one was filed Mar 2, 2009) | Jul 31, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +299 days, USPTO patent term adjustment record | May 26, 2027 | 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 | 2 of 3 maintenance fees paid | lapsed Aug 23, 2023 | High confidence |
| Computed term end | The steps above, in order | Aug 23, 2023 | High confidence |
This family
| US 7,499,366 | In force Nov 2026 | Nov 2026 |
| US 7,486,587 | Term ended Sep 2026 | Sep 2026 |
| Application PCT/US2007/074901 | PCT application no patent term | no patent term |
| US 8,004,927 | this patent Aug 2023 | Aug 2023 |
| US 8,279,704 | Lapsed on the fee record Oct 2024 | Oct 2024 |
| US 8,509,025 | Term ended Jul 2026 | Jul 2026 |
| Application PCT/US2011/050012 | PCT application no patent term | no patent term |
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 |
|---|---|---|---|
| Mar 30, 2016 Reel 38300, frame 665 | SanDisk 3D LLC. | SanDisk Technologies Inc. | Assignment of Assignor's Interest |
| Apr 25, 2016 Reel 38520, frame 552 | SanDisk 3D LLC | SanDisk Technologies Inc. | Corrective Assignment to Correct the Incorrect Listed Patent Number 8853569 to the Correct Patent Number 8883569 Previously Recorded on Reel 038300 Frame 0665. Assignor(S) Hereby Confirms the Assignment. |
| May 25, 2016 Reel 38809, frame 600 | SanDisk Technologies Inc. | SanDisk Technologies LLC | Change of Name |
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
Note
The 299 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 below the median of utility patents granted in 2011 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.