January 16, 2026
U.S. Patent and Trademark Office Director John Squires has stopped Yangtze Memory Technologies Co.'s challenges to two Micron Technology Inc.-owned patents, saying the Chinese chipmaker did not address concerns over its precise identity.
November 25, 2025
Yangtze Memory Technologies Co. has told the U.S. Patent and Trademark Office that its presence on a list flagging national security risks has nothing to do with its challenge to Micron Technology Inc.'s patents and that Micron shouldn't be able to "weaponize" that list for its own benefit.
November 14, 2025
U.S. Patent and Trademark Office Director John Squires has mandated that Yangtze Memory Technologies Co. Ltd. explain why its challenge to Micron Technology Inc. patents should proceed, given that the Chinese company has been deemed a national security risk.
June 11, 2025
The Patent Trial and Appeal Board has said it will consider patent validity challenges that Micron Technology Inc. and Yangtze Memory Technologies Co. brought against each other, overriding the competing semiconductor companies' efforts to escape scrutiny, including Micron's national security arguments.