- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/663 - Preventing unauthorised calls to a telephone set
Patent holdings for IPC class H04M 1/663
Total number of patents in this class: 385
10-year publication summary
|
40
|
33
|
25
|
39
|
26
|
23
|
11
|
11
|
9
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 58024 |
31 |
| Huawei Technologies Co., Ltd. | 119724 |
23 |
| Microsoft Technology Licensing, LLC | 54202 |
18 |
| Samsung Electronics Co., Ltd. | 153357 |
15 |
| ZTE Corporation | 43559 |
13 |
| International Business Machines Corporation | 62153 |
12 |
| OnePIN, Inc. | 68 |
10 |
| Malikie Innovations Limited | 6687 |
9 |
| Qualcomm Incorporated | 90013 |
8 |
| Tencent Technology (Shenzhen) Company Limited | 15618 |
8 |
| Google LLC | 43702 |
7 |
| AT&T Intellectual Property I, L.P. | 9833 |
6 |
| Beijing Qihoo Technology Company Limited | 950 |
6 |
| CenturyLink Intellectual Property LLC | 1276 |
6 |
| YouMail, Inc. | 53 |
6 |
| Ericsson | 22261 |
5 |
| Huawei Device Co., Ltd. | 2753 |
5 |
| First Orion Corp. | 180 |
5 |
| Ooma, Inc. | 77 |
5 |
| Qizhi Software (Beijing) Co. Ltd | 549 |
5 |
| Other owners | 182 |