The company's stock price has begun to rise in the last two days, and on Wednesday closed up 19 cents at $14.79. In December, Taiwan Semiconductor, the world's largest maker of custom chips, filed a lawsuit in Federal District Court in San Francisco accusing the Chinese chip maker of stealing trade secrets and infringing on its American patents. On Monday, it filed additional legal documents with the court that detailed its accusations against the Chinese company. Semiconductor Manufacturing International "has engaged in an ongoing scheme of industrial espionage and unfair competition," Taiwan Semiconductor contends in its latest filing. Charles Byers, worldwide brand manager at the North American operations of Taiwan Semiconductor, said the company was seeking a jury trial "based on the belief that they infringed our patents and misappropriated our trade secrets."