TV/Com has launched legal proceedings against two suppliers of scrambling technology for UK cable operator Telewest and digital TV service ONdigital.
The cable technology developer has alleged that the system used by both companies to ensure only authorised customers can gain access to certain content is an unlicensed use of its patented technology.
The actions are against Nagra Kudelski and Canal Plus Technologies for allegedly supplying the systems without consent.
Graham Kill, director of TV/Com, said: "We strongly value intellectual property rights and we believe substantial damages could be due to us if the complaints that these patents have been used by these companies are upheld."
"While we desire that the parties will come to a licensing agreement that would resolve all issues with respect to past, present and future use of the patents, we strongly support these global actions to assert TV/Com's intellectual property rights," he added.
If the claims proceed to court, it will typically take about a year to reach a resolution.
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