February 14, 2025 – China Times News Network
by Wang Yixin
MOSFET design company Force-MOS (4923) announced today (14th) that it has won a patent infringement lawsuit against ASUS (2357) in the U.S. District Court for the Eastern District of Texas. The court ruled on February 13, 2025 (U.S. time) that ASUS had willfully infringed on Force-MOS’s patents and ordered ASUS to pay 10.5 million (approximately NT 340 million) in damages. Force-MOS has officially received the court’s judgment and plans to further apply for an injunction to prohibit ASUS from selling the infringing MOSFET products in the United States. Boosted by this positive news, Force-MOS’s stock price surged to the daily limit in early trading, reaching NT 40.2, breaking through the NT 40 mark.
The case originated in 2022 when Force-MOS discovered that ASUS was selling laptops in the U.S. that contained MOSFET products infringing on its U.S. patents (US 7,629,634 and US 7,812,409). Force-MOS followed industry practices by sending a notice to ASUS and attempting to engage in good-faith communication, but received no response, leading to the formal lawsuit. The infringing MOSFET products include Panjit 2N7002K, Excelliance EMB20N03V, LRC L2N7002SLT1G, and UBIQ QM3016AM, among others.
Force-MOS pointed out that these infringing products have been widely used in consumer electronics, including laptops, personal computers, tablets, and battery modules. Each device typically uses dozens to hundreds of MOSFETs, making them highly versatile. The long-term infringement has harmed Force-MOS’s intellectual property rights and market competitiveness. The company emphasized its commitment to protecting shareholder interests and respecting intellectual property rights, vowing to continue defending its rights.
This victory not only confirms that ASUS must pay damages but also opens the possibility for the court to award enhanced damages due to the jury’s finding of “willful infringement.” Additionally, ASUS may be required to cover part or all of Force-MOS’s legal fees. Force-MOS will also take further legal action to ensure that all electronic devices containing the infringing MOSFET products are barred from sale in the U.S. market. Any brand products in the future that incorporate the infringing components will also face legal risks.
The damages were calculated by the jury of the U.S. District Court for the Eastern District of Texas based on ASUS’s total sales in the U.S., the impact on Force-MOS’s orders, and reasonable compensation standards. Force-MOS emphasized that it will continue to monitor market developments and rigorously protect its patent rights to ensure the company’s long-term competitiveness.
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