- CableTelevision Laboratories, Inc.
- Cerinet USA Inc.
- Communications Research Centre Canada (CRC), part of Innovation, Science and Economic Development Canada
- Dolby Laboratories Licensing Corporation
- Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- IDEAHUB, Inc.
- Koninklijke KPN N.V.
- Koninklijke Philips N.V.
- NEC Corporation
- NHK Engineering System, Inc.
- Nippon Hoso Kyokai
- ONE Media, LLC
- Panasonic Holdings Corporation
- Shanghai National Engineering Research Center of Digital Television Co., Ltd (NERC-DTV)
- SK Telecom Co., Ltd.
- Sun Patent Trust
- Technology in Ariscale, LLC