408 patents currently held

265 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 Mar 2027. from the record

Of the 265 now held by other companies, 259 name AAC Optics Solutions Pte Ltd. as their current owner, and 6 more name another party. Each row says which.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Mar 2027

Next term end

383

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 202820292030 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

Micro-Electro-Mechanical System (MEMS) Variable Capacitors and Actuation Components and Related Methods US 7,545,622

Cited by 58 later US patents, top 25% of utility patents granted in 2009 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.

Ends Mar 2027 · High confidence Also notable

Vibration Motor with Guide Rail and Rolling Members and Stopping Magnet US 11,569,723

Cited by 3 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2040.

Ends Apr 2040 · High confidence Also notable

Sounding Device US 11,240,605

Granted 2022. Computed term ends 2039.

Ends Jun 2039 · High confidence

Formerly held, still cited

Notable

A Vibration Motor with Magnetic Steel Assemlby and Elastic Support Between Pillars US 11,515,774

Cited by 7 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2040.

now held by AAC Optics Solutions Pte. Ltd.

Ends Feb 2040 · High confidence

Also notable

Vibration Motor with Elastic Connector Shaft Holding Pole Plate with Magnets Moving in at Least Two Directions and Coils on Housing Walls US 11,641,152

Cited by 5 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2040.

now held by AAC Optics Solutions Pte. Ltd.

Ends Apr 2040 · 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.

2 fees due Nov 23 to 30, 2026 · next Nov 23
5 fees due Dec 2 to 25, 2026 · next Dec 2
3 fees due Jan 2 to 30, 2027 · next Jan 2
1 fee due Feb 27, 2027
The maintenance fee for Method for Avoiding an Offset of a Membrane of a Electrodynamic Acoustic Transducer (US 10,397,706) comes due Feb 27, 2027. Unpaid by Aug 27, 2027, it lapses early.
1 fee due Mar 29, 2027
The maintenance fee for Micro-Speaker (US 9,148,711) comes due Mar 29, 2027. Unpaid by Sep 29, 2027, it lapses early.
13 fees due Apr 13 to 30, 2027 · next Apr 13
5 fees due May 3 to 26, 2027 · next May 3
2 fees due Jun 3 to 5, 2027 · next Jun 3
6 fees due Jul 7 to 30, 2027 · next Jul 7
6 fees due Aug 9 to 27, 2027 · next Aug 9
13 fees due Sep 3 to 30, 2027 · next Sep 3
2 fees due Oct 5 to 7, 2027 · next Oct 5
6 fees due Nov 5 to 10, 2027 · next Nov 5

Which patents, and when each one lapses · Pro

Recent changes

13 of the patents on this record were granted since Aug 16, 2026
6 terms have ended since Aug 16, 2026

What they patent

The 5 largest of its 383 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Micro-Electro-Mechanical System (MEMS) Variable Capacitors and Actuation Components and Related Methods	26 in force	to Oct 2038
Film Bulk Acoustic Resonator	1 in force	to Dec 2044
Rubber Voice Diaphragm and Method for Preparing the Same, and Speaker	1 in force	to Jul 2044
Speaker Control Method and Device, Terminal Equipment and Computer-Readable Storage Medium	1 in force	to Jun 2044
Speaker Box and Electronic Device	1 in force	to May 2044

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,545,622	Micro-Electro-Mechanical System (MEMS) Variable Capacitors and Actuation Components and Related Methods In force Term ends Mar 8, 2027 · High confidence	In force	Term ends Mar 8, 2027	High confidence
US 8,891,223	Micro-Electro-Mechanical System (MEMS) Variable Capacitors and Actuation Components and Related Methods In force Term ends Mar 8, 2027 · High confidence	In force	Term ends Mar 8, 2027	High confidence
US D695,721	Earphone In force Term ends Dec 17, 2027 · High confidence	In force	Term ends Dec 17, 2027	High confidence
US D695,722	Earphone In force Term ends Dec 17, 2027 · High confidence	In force	Term ends Dec 17, 2027	High confidence
US D697,050	Headset In force Term ends Jan 7, 2028 · High confidence	In force	Term ends Jan 7, 2028	High confidence
US D697,058	Earphone In force Term ends Jan 7, 2028 · High confidence	In force	Term ends Jan 7, 2028	High confidence
US D698,761	Earphone In force Term ends Feb 4, 2028 · High confidence	In force	Term ends Feb 4, 2028	High confidence
US 8,673,671	Methods and Devices for Fabricating Tri-Layer Beams In force Term ends Jul 23, 2028 · High confidence	In force	Term ends Jul 23, 2028	High confidence
US 8,141,675	Micro-Speaker In force Term ends Jan 31, 2030 · High confidence	In force	Term ends Jan 31, 2030	High confidence
US 8,059,385	Substrates with Slotted Metals and Related Methods In force Term ends Feb 4, 2030 · High confidence	In force	Term ends Feb 4, 2030	High confidence

10 of 408 patents shown.

Pro members see all 408.

Pro members: see all 408 patents

Also on record, not counted in the 408: 265 patents in force now held by others · 559 patents ended · 33 applications pending · 245 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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AAC Technologies Pte. Ltd.