857 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Dec 2026. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
66
Ending by 2030
Dec 2026
Next term end
713
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
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
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Jan 2032 · High confidence
Also notable
Ends Apr 2031 · High confidence
Also notable
Ends Nov 2031 · High confidence
Presentation of Direct Accessed Storage Under a Logical Drive Model
US 9,417,821
Cited by 82 later US patents, top 5% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2032.
Hybrid Memory Architectures
US 8,914,568
Cited by 105 later US patents, top 5% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031.
Method and System to Improve the Performance And/Or Reliability of a Solid-State Drive
US 8,533,550
Cited by 91 later US patents, top 10% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031.
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 24 fees due Dec 2 to 30, 2026 · next Dec 2
- 22 fees due Jan 2 to 30, 2027 · next Jan 2
- 16 fees due Feb 1 to 28, 2027 · next Feb 1
- 14 fees due Mar 5 to 26, 2027 · next Mar 5
- 20 fees due Apr 1 to 30, 2027 · next Apr 1
- 16 fees due May 5 to 28, 2027 · next May 5
- 21 fees due Jun 1 to 30, 2027 · next Jun 1
- 11 fees due Jul 2 to 28, 2027 · next Jul 2
- 18 fees due Aug 2 to 27, 2027 · next Aug 2
- 13 fees due Sep 3 to 30, 2027 · next Sep 3
- 14 fees due Oct 2 to 30, 2027 · next Oct 2
- 3 fees due Nov 3 to 10, 2027 · next Nov 3
Recent changes
- 19 of the patents on this record were granted since Aug 16, 2026
- 3 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 713 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Reduced Uncorrectable Memory Errors | 4 in force | to Jul 2033 |
| Techniques to Perform Power Fail-Safe Caching Without Atomic Metadata | 4 in force | to Oct 2030 |
| Check Node Data Compression in Memory Systems | 3 in force | to Jul 2043 |
| SSD Managed Host Write Atomicity with Arbitrary Transfer Length | 3 in force | to Aug 2042 |
| Zoned Namespace with Zone Grouping | 3 in force | to Feb 2042 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,458,415 | Flexible Selection Command for Non-Volatile Memory In force · High confidence | In force | High confidence | |
| US 7,968,976 | Guard Ring Extension to Prevent Reliability Failures In force · High confidence | In force | High confidence | |
| US 7,972,909 | Guard Ring Extension to Prevent Realiability Failures In force · High confidence | In force | High confidence | |
| US 7,609,562 | Configurable Device Id in Non-Volatile Memory In force · High confidence | In force | High confidence | |
| US 7,627,713 | Method and Apparatus to Maintain Data Integrity in Disk Cache Memory During and After Periods of Cache Inaccessiblity In force · High confidence | In force | High confidence | |
| US 8,909,853 | Methods and Apparatus to Share a Thread to Reclaim Memory Space in a Non-Volatile Memory File System In force · High confidence | In force | High confidence | |
| US 7,566,915 | Guard Ring Extension to Prevent Reliability Failures In force · High confidence | In force | High confidence | |
| US 8,051,355 | Multilevel Low Density Parity-Check Coded Modulation In force · High confidence | In force | High confidence | |
| US 7,688,628 | Device Selection Circuit and Method In force · High confidence | In force | High confidence | |
| US 8,886,513 | Embedded Bus Emulation In force · High confidence | In force | High confidence |
Also on record, not counted in the 857: 39 patents ended · 143 applications pending · 46 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.