- AT&T Intellectual Property II, L.P.
- Dolby International AB
- Dolby Laboratories Licensing Corporation
- Fujitsu Limited
- Hitachi, Ltd.
- JVCKENWOOD Corporation
- Koninklijke Philips N.V.
- LG Electronics Inc.
- Microsoft Corporation
- Mitsubishi Electric Corporation
- Nippon Telegraph and Telephone Corporation
- Orange
- Panasonic Holdings Corporation
- Pantech Inc.
- Samsung Electronics Co., Ltd.
- Sharp Corporation
- Siemens AG
- Sony Group Corporation
- Sun Patent Trust
- Telenor ASA
- Toshiba Corporation
- ZTE Corporation