Certicom, a content security specialist, has filed the suit as it believes that its copyright on security technology used in PS3, DVD players, VAIO personal computers and certain high definition TV models and audio equipment has been infringed.

The patents relate to the Advanced Access Control System used in Blu-Ray and Digital Transmission Content Protection used in wired and wireless distrubtion of compression aaudio and video.

“We have invested heavily in ECC research and development over many years and feel strongly that our shareholders deserve fair value from companies using our patented technology,” said Certicom president and chief executive officer Bernard Crotty.

“We prefer to resolve these issues through commercial discussions and without litigation.  However, at this point we are left with no alternative but to file suit.”