1,107 patents currently held

2 more in force are now held by other companies

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

The next term ends in Oct 2028. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Oct 2028

Next term end

865

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

202620272028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045

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

Flash Memory Apparatus and Storage Management Method for Flash Memory US 10,019,314

The most cited patent in this portfolio, cited by 173 later US patents, top 1% of utility patents granted in 2018 in our data. Protection runs to 2037.

Ends Apr 2037 · High confidence Also notable

Method and Memory Controller for Reading Data Stored in Flash Memory by Referring to Binary Digit Distribution Characteristics of Bit Sequences Read from Flash Memory US 8,427,875

Cited by 55 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.

Ends Oct 2031 · High confidence Also notable

Flash Memory Apparatus and Storage Management Method for Flash Memory US 10,236,908

Cited by 37 later US patents, top 10% of utility patents granted in 2019 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2037.

Ends Apr 2037 · High confidence

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.

1 fee due Nov 30, 2026
The maintenance fee for Method and Apparatus for Accessing to Data in Response to Power-Supply Event (US 11,664,056) comes due Nov 30, 2026. Unpaid by Jun 1, 2027, it lapses early.
13 fees due Dec 4 to 30, 2026 · next Dec 4
17 fees due Jan 2 to 28, 2027 · next Jan 2
19 fees due Feb 1 to 28, 2027 · next Feb 1
15 fees due Mar 3 to 22, 2027 · next Mar 3
16 fees due Apr 1 to 30, 2027 · next Apr 1
27 fees due May 3 to 28, 2027 · next May 3
18 fees due Jun 5 to 30, 2027 · next Jun 5
19 fees due Jul 2 to 28, 2027 · next Jul 2
17 fees due Aug 2 to 27, 2027 · next Aug 2
19 fees due Sep 1 to 30, 2027 · next Sep 1
22 fees due Oct 2 to 30, 2027 · next Oct 2
12 fees due Nov 3 to 12, 2027 · next Nov 3

Which patents, and when each one lapses · Pro

Recent changes

20 of the patents on this record were granted since Aug 16, 2026

What they patent

The 5 largest of its 865 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Method for Performing Memory Access Management, and Associated Memory Device and Controller Thereof	12 in force	to Oct 2031
Flash Memory Apparatus and Storage Management Method for Flash Memory	11 in force	to Apr 2037
Flash Memory Controller	11 in force	to Oct 2033
Method and Memory Controller for Reading Data Stored in Flash Memory by Referring to Binary Digit Distribution Characteristics of Bit Sequences Read from Flash Memory	11 in force	to Oct 2031
Method for Managing a Memory Apparatus, and Associated Memory Apparatus Thereof	11 in force	to May 2031

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 8,856,432	Data Programming Methods and Devices for Programming Data into Memories In force Term ends Oct 2, 2028 · High confidence	In force	Term ends Oct 2, 2028	High confidence
US 7,843,672	Input/Output Regulating Circuitry with Self-Electrostatic-Discharge Protection In force Term ends Dec 1, 2028 · High confidence	In force	Term ends Dec 1, 2028	High confidence
US 7,737,541	Semiconductor Chip Package Structure In force Term ends Feb 18, 2029 · High confidence	In force	Term ends Feb 18, 2029	High confidence
US 8,122,179	Memory Apparatus and Method of Evenly Using the Blocks of a Flash Memory In force Term ends Mar 22, 2029 · High confidence	In force	Term ends Mar 22, 2029	High confidence
US 7,908,423	Memory Apparatus, and Method of Averagely Using Blocks of a Flash Memory In force Term ends Apr 13, 2029 · High confidence	In force	Term ends Apr 13, 2029	High confidence
US 7,962,683	Flash Memory, and Method for Operating a Flash Memory In force Term ends May 9, 2029 · High confidence	In force	Term ends May 9, 2029	High confidence
US 8,756,366	Method for Operating Non-Volatile Memory and Data Storage System Using the Same In force Term ends May 10, 2029 · High confidence	In force	Term ends May 10, 2029	High confidence
US 8,473,712	Method for Managing a Memory Apparatus, and Associated Memory Apparatus Thereof In force Term ends May 25, 2029 · High confidence	In force	Term ends May 25, 2029	High confidence
US 8,473,713	Method for Managing a Memory Apparatus In force Term ends May 25, 2029 · High confidence	In force	Term ends May 25, 2029	High confidence
US 8,799,622	Method for Managing a Memory Apparatus In force Term ends May 25, 2029 · High confidence	In force	Term ends May 25, 2029	High confidence

10 of 1,107 patents shown.

Pro members see all 1,107.

Pro members: see all 1,107 patents

Also on record, not counted in the 1,107: 2 patents in force now held by others · 25 patents ended · 61 applications pending · 122 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.

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Silicon Motion Inc.