- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/42 - Systems providing special services or facilities to subscribers
Patent holdings for IPC class H04M 3/42
Total number of patents in this class: 10422
10-year publication summary
|
923
|
812
|
688
|
719
|
574
|
462
|
425
|
303
|
295
|
68
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Microsoft Technology Licensing, LLC | 54215 |
306 |
| Huawei Technologies Co., Ltd. | 119891 |
246 |
| Samsung Electronics Co., Ltd. | 153573 |
213 |
| ZTE Corporation | 43576 |
209 |
| Malikie Innovations Limited | 6679 |
201 |
| AT&T Intellectual Property I, L.P. | 9831 |
192 |
| Google LLC | 43739 |
154 |
| T-Mobile USA, Inc. | 4388 |
147 |
| Verizon Patent And Licensing Inc. | 7487 |
144 |
| RingCentral, Inc. | 785 |
144 |
| Cisco Technology, Inc. | 22256 |
141 |
| International Business Machines Corporation | 62182 |
133 |
| Apple Inc. | 58049 |
128 |
| First Orion Corp. | 180 |
125 |
| NEC Corporation | 36611 |
123 |
| Genesys Cloud Services, Inc., FORMERLY Genesys Telecommunications Laboratories, Inc. | 1085 |
123 |
| Qualcomm Incorporated | 90109 |
111 |
| Avaya Inc. | 1334 |
111 |
| United Services Automobile Association (USAA) | 3156 |
105 |
| West Technology Group, LLC | 408 |
101 |
| Other owners | 7265 |