Taiwan's TWSE Index fell for a second day, led by MediaTek Inc (
MediaTek fell NT$30, or 6.9 percent, to NT$408 while the TAIEX dropped 59.42, or 1.1 percent, to 5202.59.
Within the index, more than two stocks fell for every one that rose. The total value of trade was NT$63.64 billion (US$1.9 billion).
MediaTek has filed a lawsuit against rival VIA Technologies Inc (威盛電子) for violating its DVD chip patents. Last week inspectors sought information from Benq Corp (明基電通), the nation's largest mobile-phone maker, about MediaTek chips Benq is using in its DVD players.
"This kind of action, investigating one's customers in a patent-violation case, is very rare," said Yao Ke-min, a semiconductors analyst at Fubon Securities Co (
Catcher Technology Co (
Compal Electronics Inc (
Formosa Plastics Corp (台塑), Taiwan's biggest petrochemical firm, rose NT$1.70, or 4.1 percent, to NT$43.40 on optimism chemical prices will rise, boosting profits.