Collateral for a security interest recorded Nov 14, 2024 (JPMorgan Chase Bank, N.A.).
Term ends Aug 30, 2027 · High confidence
20-year base term ends Aug 30, 2027
Filed Jun 17, 2011 as application 13/163,581 · Granted Apr 1, 2014
Base term plus 263 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2007
2027
Clock starts
Aug 30, 2007
Aug 30, 2007
Term ends
Aug 30, 2027
Aug 30, 2027
Granted
Apr 1, 2014
Apr 1, 2014
base term
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
263
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,225,006.
3 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.
24
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 263 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. All three maintenance fees are recorded paid; no more fees are due. 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 Aug 30, 2007, when application 11/847,986, the earliest non-provisional in its chain, was filed (this one was filed Jun 17, 2011) | Aug 30, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +263 days, USPTO patent term adjustment record | May 19, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,225,006) | capped to Aug 30, 2027 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 30, 2027 | High confidence |
This family
| US 7,761,626 | Lapsed on the fee record Jul 2022 | Jul 2022 |
| US 7,761,623 | Lapsed on the fee record Jul 2022 | Jul 2022 |
| US 8,806,116 | In force Jul 2030 | Jul 2030 |
| US 8,370,547 | Lapsed on the fee record Feb 2025 | Feb 2025 |
| US 8,370,548 | Lapsed on the fee record Feb 2021 | Feb 2021 |
| US 8,949,555 | Lapsed on the fee record Feb 2023 | Feb 2023 |
| US 8,341,300 | Lapsed on the fee record Dec 2024 | Dec 2024 |
| US 8,689,042 | this patent Aug 2027 | Aug 2027 |
8 of 24 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 |
|---|---|---|---|
| Jan 17, 2013 Reel 29644, frame 693 | Kanapathippillai, Ruban; Narasimha, Ashwin; Okin, Kenneth A.; Karamcheti, Vijay | Virident Systems, Inc. | Assignment of Assignor's Interest |
| Jan 30, 2019 Reel 48196, frame 580 | Virident Systems, Inc. | Virident Systems, LLC | Change of Name |
| Jul 9, 2020 Reel 53180, frame 472 | Virident Systems, LLC | Western Digital Technologies, Inc. | Assignment of Assignor's Interest |
| Sep 29, 2020 Reel 53926, frame 446 | Western Digital Technologies, Inc. | JPMorgan Chase Bank, N.A., as Agent | Security Interest |
| Feb 8, 2022 Reel 58966, frame 321 | Jpmorgan Chase Bank, N.a. | Western Digital Technologies, Inc. | Release of Security Interest at Reel 053926 Frame 0446 |
| Aug 21, 2023 Reel 64715, frame 1 | Western Digital Technologies, Inc. | Jpmorgan Chase Bank, N.a. | Patent Collateral Agreement - A&r Loan Agreement |
| Aug 21, 2023 Reel 67045, frame 156 | Western Digital Technologies, Inc. | Jpmorgan Chase Bank, N.a. | Patent Collateral Agreement - DDTL Loan Agreement |
| May 29, 2024 Reel 67567, frame 682 | Western Digital Technologies, Inc. | SanDisk Technologies, Inc. | Assignment of Assignor's Interest |
| Jun 27, 2024 Reel 67982, frame 32 | SanDisk Technologies, Inc. | SanDisk Technologies, Inc. | Change of Name |
| Aug 23, 2024 Reel 68762, frame 494 | SanDisk Technologies, Inc. | JPMorgan Chase Bank, N.A., as the Agent | Patent Collateral Agreement |
| Oct 11, 2024 Reel 69168, frame 273 | SanDisk Technologies, Inc. | Western Digital Technologies, Inc. | Assignment of Assignor's Interest |
| Nov 14, 2024 Reel 69411, frame 208 | Western Digital Technologies, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Agreement (SUPPLEMENTAL) |
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
Aug 2027
Term ends Aug 30, 2027. No further fees fall due before then
Note
The 263 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,225,006.
Citations
184
later US patents cite this one
That is top 5% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.