Tessera IP suit targets top ATE suppliers

February 2, 2006 – Tessera Technologies Inc., San Jose, CA, said it has filed lawsuits against ASE, ChipMOS, Siliconware Precision Industries (SPIL), STATS ChipPAC, and STMicroelectronics, regarding illegal use of its patented chip packaging technology.

Despite having licenses with five of the top six global IC manufacturers, Tessera believes those license fees represent only about 36% of packaged chips manufactured using Tessera technology in 2005. With the litigation, the company hopes to increase royalties and license fees to account for more than 80% of packaged chips it says are manufactured with its technology.

For 2005, Tessera reported a 30% increase in revenues (60% of which were for licensing) to $94.7 million, and a profit of $31.4 million, down from $59.0 million in 2004.


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