- 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: 11124
10-year publication summary
|
1056
|
1079
|
929
|
821
|
700
|
737
|
581
|
466
|
408
|
95
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 100781 |
336 |
| Microsoft Technology Licensing, LLC | 51439 |
325 |
| AT&T Intellectual Property I, L.P. | 9886 |
233 |
| Samsung Electronics Co., Ltd. | 131630 |
224 |
| Malikie Innovations Limited | 7703 |
222 |
| ZTE Corporation | 39218 |
214 |
| Cisco Technology, Inc. | 18858 |
178 |
| Google LLC | 38759 |
160 |
| Verizon Patent And Licensing Inc. | 6900 |
157 |
| RingCentral, Inc. | 731 |
153 |
| International Business Machines Corporation | 60644 |
152 |
| T-Mobile USA, Inc. | 3668 |
136 |
| NEC Corporation | 32703 |
132 |
| Apple Inc. | 50209 |
128 |
| Qualcomm Incorporated | 76576 |
128 |
| Avaya Inc. | 1529 |
123 |
| Genesys Telecommunications Laboratories, Inc. | 749 |
113 |
| Arlington Technologies, LLC | 642 |
105 |
| West Technology Group, LLC | 414 |
104 |
| First Orion Corp. | 140 |
96 |
| Other owners | 7705 |