According to DVD-Recordable.org, Ciba Specialty Chemicals has filed a patent infringement suit in Germany and the Netherlands against RITEK and its european subsidiaries Conrexx Technology B.V., RME Manufacturing GmbH, RITEK Media Europe, and PrimeDisc Technologies GmbH.

Ciba claims that RiTEK and its named subsidiaries import and sell RiTEK-manufactured CD-R which infringe Ciba's patented CD-R dye technology. Ciba IRGAPHOR Ultragreen is globally recognized by the industry as the optical dye of choice for CD-R manufacturing known for high quality and consistency.

"We will not tolerate that our technology is illegally copied and counterfeit products are spread in the market. Therefore we are carefully and continuously monitoring the media market. We are prepared to vigorously defend our intellectual property and will not hesitate to take legal action against infringers", a Ciba spokesperson said.

Source: DVD-Recordable.org