Reed Semiconductor Corp., a global innovator in advanced semiconductor solutions, has filed a patent infringement lawsuit against Monolithic Power Systems, Inc. (MPS) in the United States District Court for the Western District of Texas. The case, numbered 6:25-cv-00449, alleges that MPS infringes U.S. Patent No. 7,960,955, which covers power semiconductor devices featuring a linear regulator designed to stabilize input voltage across multiple product lines. The lawsuit comes in response to a series of legal actions initiated by MPS in 2023, 2024, and 2025 in the U.S. District Court for the District of Delaware. Reed Semiconductor claims that discovery in those cases has exposed the allegations as baseless. Additionally, Reed’s complaint asserts that MPS engaged in bad-faith conduct by interfering with Reed’s existing business relationships and contractual agreements. Founded in 2019 in Warwick, Rhode Island, by a team of semiconductor design and packaging experts, Reed Semiconductor has quickly established itself as a key player in solving complex power management challenges. The company’s engineers have been instrumental in developing foundational technologies such as Constant On-Time (COT) control, Smart Power Stage (SPS) architecture, and DDR5 PMICs—core components driving performance in AI systems and modern data centers. “We believe in competing fairly through innovation, not legal intimidation,” said Wenkai Wu, CEO of Reed Semiconductor. “The evidence shows that MPS has repeatedly attempted to profit from the intellectual property of others while using weak and questionable patents to pressure competitors and stifle innovation. Their litigation strategy appears less about protecting legitimate inventions and more about leveraging the legal system to harass rivals and maintain market dominance.” Reed continues to invest heavily in research and development, dedicating millions of dollars annually to advance its technology portfolio. Recent product launches include high-efficiency power stages, vertical power delivery (VPD) modules, multiphase controllers, and intermediate bus converters. Despite its relatively short history, the company has earned strong recognition and widespread adoption from leading customers in the semiconductor and tech industries. Reed Semiconductor is represented in this matter by Morgan Lewis LLP, a global law firm with extensive experience in intellectual property litigation.