United Microelectronics Corporation shares rise 1.22% premarket after Elan Microelectronics files patent infringement lawsuit.

United Microelectronics Corporation rose 1.22% in premarket trading. The company's stock price increase may be attributed to the recent news of Elan Microelectronics filing a patent infringement lawsuit, which could potentially benefit United Microelectronics Corporation if the lawsuit results in a favorable outcome. Additionally, the launch of an ADC chip by Chengdu Sino-Microelectronics Tech may have positively impacted the stock price, as it indicates growth and innovation in the microelectronics industry.