- 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: 10490
10-year publication summary
|
923
|
812
|
688
|
719
|
574
|
462
|
424
|
301
|
295
|
53
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Microsoft Technology Licensing, LLC | 54220 |
307 |
| Huawei Technologies Co., Ltd. | 119081 |
252 |
| Samsung Electronics Co., Ltd. | 152534 |
214 |
| ZTE Corporation | 43468 |
210 |
| Malikie Innovations Limited | 6761 |
203 |
| AT&T Intellectual Property I, L.P. | 9815 |
193 |
| Google LLC | 43583 |
154 |
| Cisco Technology, Inc. | 22238 |
147 |
| T-Mobile USA, Inc. | 4359 |
147 |
| RingCentral, Inc. | 781 |
145 |
| Verizon Patent And Licensing Inc. | 7431 |
143 |
| International Business Machines Corporation | 62076 |
133 |
| Apple Inc. | 57505 |
128 |
| First Orion Corp. | 180 |
125 |
| NEC Corporation | 36472 |
123 |
| Genesys Cloud Services, Inc., FORMERLY Genesys Telecommunications Laboratories, Inc. | 1072 |
123 |
| Qualcomm Incorporated | 89428 |
113 |
| Avaya Inc. | 1342 |
111 |
| United Services Automobile Association (USAA) | 3136 |
105 |
| Arlington Technologies, LLC | 617 |
102 |
| Other owners | 7312 |