Sonrai Memory Sues Dell for Patent Infringement

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Sonrai Memory Limited filed a complaint on Monday in the Western District of Texas against Dell Technologies Inc. alleging that the defendant infringed its patents-in-suit for products such as laptops, desktop computers, and servers.
The patents-in-suit are United States Patent Nos. 6,724,241 (the ’241 patent); 6,920,527 (the ’527 patent); and 7,436,232 (the ’232 patent), which “relate to improvements in charge pump circuits,” “portable memory devices with both volatile and non-volatile memory,” and “regenerative clock repeating.”
The plaintiff claimed that Dell’s purportedly infringing products include laptops, desktop computers, and servers “with SanDisk/Toshiba 64L 3D NAND flash chips.” They alleged the products infringe the ’241 patent, entitled “Variable Charge Pump Circuit with Dynamic Load.” According to the claim chart, claim 1 of the ’241 patent states: “A charge pump circuit for generating a charge pump voltage having minimal voltage ripples …”

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