Lapsed Sep 22, 2021 on the fee record · High confidence
20-year base term ended Oct 24, 2026
Third maintenance fee unpaid; grace period ended.
Held by Woden Technologies Inc.
Filed Jun 17, 2008 as application 12/140,991 · Granted Sep 22, 2009
Base term, 20 years from filing
Today
Lapsed Sep 22, 2021
2006
2026
Clock starts
Oct 24, 2006
Oct 24, 2006
No longer in force
Sep 22, 2021
Sep 22, 2021
Granted
Sep 22, 2009
Sep 22, 2009
Term would have run to
Oct 24, 2026
Oct 24, 2026
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
2
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 Oct 24, 2026: its 20-year base term, with no 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 Oct 24, 2006, when application 11/552,426, the earliest non-provisional in its chain, was filed (this one was filed Jun 17, 2008) | Oct 24, 2026 | 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 | 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 Sep 22, 2021 | High confidence |
| Computed term end | The steps above, in order | Sep 22, 2021 | High confidence |
This family
| US 7,391,638 | In force Dec 2026 | Dec 2026 |
| US 7,593,249 | this patent Sep 2021 | Sep 2021 |
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 |
| Nov 12, 2021 Reel 58871, frame 928 | SanDisk Technologies LLC | Woden Technologies Inc. | Assignment of Assignor's 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.
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2009 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.