Lapsed Feb 5, 2025 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.
Held by Western Digital Israel Ltd.
Filed Feb 25, 2008 as application 12/036,440 · Granted Feb 5, 2013
Base term, 20 years from filing, plus 1243 days of patent term adjustment (USPTO delay)
Today
Lapsed Feb 5, 2025
2008
2031
Clock starts
Feb 25, 2008
Feb 25, 2008
No longer in force
Feb 5, 2025
Feb 5, 2025
Granted
Feb 5, 2013
Feb 5, 2013
Term would have run to
Jul 22, 2031
Jul 22, 2031
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
1,243
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
12
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 Jul 22, 2031: its 20-year base term plus 1243 days of term 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 this application, 12/036,440, was filed | Feb 25, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1243 days, USPTO patent term adjustment record | Jul 22, 2031 | 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 Feb 5, 2025 | High confidence |
| Computed term end | The steps above, in order | Feb 5, 2025 | Medium confidence |
This family
| US 8,452,927 | Lapsed on the fee record May 2025 | May 2025 |
| US 8,583,878 | Lapsed on the fee record Nov 2025 | Nov 2025 |
| US 8,370,850 | this patent Feb 2025 | Feb 2025 |
| US 8,359,654 | Lapsed on the fee record Jan 2025 | Jan 2025 |
| US 10,289,349 | In force Mar 2037 | Mar 2037 |
| US 8,959,285 | In force Jun 2029 | Jun 2029 |
| US 9,098,506 | Lapsed on the fee record Aug 2023 | Aug 2023 |
| Application 12/123,304 | Abandoned not computed | not computed |
8 of 12 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 25, 2008 Reel 20557, frame 337 | Nochimowski, Alain; Mosek, Amir | SanDisk Il Ltd. | Assignment of Assignor's Interest |
| Aug 21, 2020 Reel 53574, frame 513 | SanDisk Il Ltd. | Western Digital Israel Ltd. | 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.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 1243 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Feb 5, 2025. We will not guess the cap.
Citations
11
later US patents cite this one
That is above the median of utility patents granted in 2013 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.