Alpha and Omega Semiconductor Limited (AOSL)
Nasdaq: AOSL · Semiconductors & Related Devices · Sunnyvale, CA · filing with the SEC since 2007
Grade4.5
◀ Past 4.7● Present 5.0▶ Future 3.8
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026796 patents granted to the 7 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Alpha and Omega Semiconductor Limited’s names, not what it holds today.
Patents granted
796
793 utility, 3 design, 1976 to Dec 31, 2025
Granted in 2025
12
Against 14 in 2024 and 26 in 2023
Applications published
612
32 of them in 2025
Names they are printed under
7
its own name, a subsidiary
By yearGrantedApplications published
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Semiconductors59
Electrical machinery, apparatus, energy34
Basic communication processes4
Computer technology3
Telecommunications2
Measurement2
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name7 counted
Alpha and Omega Semiconductor, Ltd. its own name
US, as the owner printed on each patent. 123 more under the same name are not counted (printed in BM, printed in KY)
287 published
Alpha and Omega Semiconductor Incorporated its own name
named as the applicant on its applications, in US. 8 more under the same name are not counted (printed in BM)
160 published
Alpha and Omega Semiconductor (Cayman) Ltd. a subsidiary
KY, as the owner printed on each patent. 50 more under the same name are not counted (printed in US)
21 published
ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP a subsidiary
CA, as the owner printed on each patent. 20 more under the same name are not counted (printed in US)
38 published
Alpha and Omega Semiconductor (Cayman) Ltd. a subsidiary
named as the applicant on its applications, in KY. 35 more under the same name are not counted (printed in US)
59 published
ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP a subsidiary
named as the applicant on its applications, in CA. 18 more under the same name are not counted (printed in US)
31 published
CHONGQING ALPHA AND OMEGA SEMICONDUCTOR LIMITED a subsidiary
named as the applicant on its applications, in CN
16 published
Names not counted (2)
Agape Limited
Most of its patents print IT; this name counts in HK. 3 granted and 0 published under it are not counted.
Agape Limited
Most of its patents print US; this name counts in HK. 1 granted and 0 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|---|---|---|---|
| Dec 11, 2025 | 2025/0379564 | DEMODULATION CIRCUIT AND DIGITAL ISOLATOR | Basic communication processes | ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP |
| Dec 4, 2025 | 2025/0373138 | High Power Fast Transient Response Linear Current Sensing Topology | Electrical machinery, apparatus, energy | ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP |
| Nov 27, 2025 | 2025/0364932 | PRECISION TWO-STAGE INTEGRATED MOTOR CONTROL | Electrical machinery, apparatus, energy | ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP |
| Nov 20, 2025 | 2025/0357279 | SEMICONDUCTOR PACKAGE HAVING TWO OR MORE DRIVER DEVICES AND METHOD OF MAKING THE SAME | Semiconductors | ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP |
| Oct 30, 2025 | 2025/0337314 | ZERO VOLTAGE SWITCHING HYBRID CONVERTER | Electrical machinery, apparatus, energy | ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP |
| Oct 16, 2025 | 2025/0323108 | SEMICONDUCTOR PACKAGE HAVING ULTRA-THIN SUBSTRATE AND METHOD OF MAKING THE SAME | Semiconductors | ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP |
| Oct 2, 2025 | 2025/0311290 | TRENCH DEVICE TERMINAL STRUCTURE AND MANUFACTURING METHOD THEREOF | Semiconductors | CHONGQING ALPHA AND OMEGA SEMICONDUCTOR LIMITED |
| Sep 11, 2025 | 2025/0287662 | SUPER JUNCTION IGBT DEVICE BASED ON CONTROLLED HOLE EXTRACTION STRUCTURE AND MANUFACTURING METHOD THEREOF | Semiconductors | CHONGQING ALPHA AND OMEGA SEMICONDUCTOR LIMITED |
| Sep 4, 2025 | 2025/0279370 | METHOD FOR ALIGNING BACKSIDE PATTERN BASED ON ONE OR MORE FRONTSIDE ALIGNMENT MARKS OF A SEMICONDUCTOR WAFER | Semiconductors | ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP |
| Aug 28, 2025 | 2025/0275214 | TRENCH CELL STRUCTURE HAVING SCHOTTKY BARRIERS AND PREPARATION METHOD THEREOF | Semiconductors | CHONGQING ALPHA AND OMEGA SEMICONDUCTOR LIMITED |
What it applied for, 2024 to 2025: Semiconductors 38 · Electrical machinery, apparatus, energy 12 · Basic communication processes 3 · Measurement 1.
A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.