YMTC, 3 Patent Infringement Lawsuits Against Micron Underway
 |
| (Source: https://www.ymtc.com/cn/technicalintroduction.html) |
YMTC, which is currently involved in patent infringement litigation against Micron in the United States, has now filed petitions for invalidation of Micron patents.
From November 2023 to July 2024, YMTC filed four patent infringement lawsuits against Micron in U.S. federal court. As of February 2025, the lawsuits filed in November 2023 in the California Northern District Court and the California Eastern District Court, as well as the lawsuit filed in July 2024 in the California Eastern District Court, remain ongoing.
As of February 2025, Micron has not filed any lawsuits against YMTC in the United States.
Between November 2024 and February 2025, YMTC also filed petitions for Inter Partes Review (IPR) with the Patent Trial and Appeal Board (PTAB) against five Micron patents:
Patent No. 10,872,903 ("Three dimensional memory and methods of forming the same")
Patent No. 8,945,996 ("Methods of forming circuitry components and methods of forming an array of memory cells")
Patent No. 10,475,737 ("Stack of horizontally extending and vertically overlapping features, methods of forming circuitry components, and methods of forming an array of memory cells")
Patent No. 10,373,974 ("Microelectronic devices and related methods")
Patent No. 8,803,214 ("Three dimensional memory and methods of forming the same")
The decision on whether to institute these IPR proceedings has not yet been determined.
The patents in question cover technologies related to 3D memory structures and the manufacturing processes for memory cells or circuitry components. The '903 and '214 patents employ a multilayer, three-dimensional stacking approach to enhance memory density by designing memory cells that are vertically stacked to store more data.
The '996 and '737 patents describe methods for forming memory cell arrays by manufacturing structures that expand and overlap horizontally and vertically. These techniques aim to improve circuit performance and reliability while overcoming limitations in microfabrication technology. The '974 patent encompasses methods for manufacturing not only memory but also various microelectronic devices, detailing improvements in semiconductor device design and production processes.
By PatenTrip
Comments
Post a Comment