According to Reuters, Taiyo Yuden has filed lawsuits against Prodisc
and Ritek, claiming that the two companies infringed upon three patents related to the manufacturing of DVD-R discs and had refused to
pay patent fees.
Japan's Taiyo Yuden Co Ltd said on Monday it has filed a patent suit in the United States against two
Taiwanese makers of DVD discs for violation of manufacturing technology for DVD-R discs.
Taiyo Yuden, an electronic parts maker,
filed a suit at a California district court against Prodisc Technology Inc on Oct. 30 and Ritek Corp on Nov. 21, Taiyo Yuden spokeswoman
Rieko Kimoto said.
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