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Hyundai joins Micron in suing Rambus

Hyundai joins Micron in suing Rambus

Signalling that it, too, plans to contest patent claims by Rambus, South Korea's Hyundai Electronics Industries has filed a suit against the developer of high-speed memory interface technology.

The suit was filed both by Hyundai Electronics and its North American subsidiary, Hyundai Electronics America, in the US District Court in San Jose. It seeks that the court rule certain patents owned by Rambus "invalid, unenforceable and not infringed by any Hyundai products", the companies said in a statement.

"It is Hyundai's position that the patents held by Rambus are not being infringed by Hyundai's current product offerings," the company said in a statement.

Hyundai's suit comes a day after Micron Technologies, a major US memory chip producer, filed a similar suit against Rambus in the US District Court in Delaware.

The dispute stems from attempts by Rambus to collect royalty for technology that it claims is used in conventional dynamic random access memory (DRAM) chips and on which it holds patents.

It has already faced down Hitachi and Toshiba and won - both companies agreed to license the technology and pay Rambus a sum for each chip they produce - and says it is in talks with all other major DRAM chip makers on similar pacts.

Rambus' claims sent shock waves through the memory chip industry because the technologies used in the chips have been, until now, jointly pooled under JEDEC, the Joint Electron Device Engineering Council, and made available to all manufacturers royalty free to ensure common standards among manufacturers and between memory and its associated controller chips.

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