Infringement of DDR4 memory patents? Dell is sued in the U.S.

It is reported that Goodman's litigation patents are US Patent Nos. 4,617,624B2; 6,243,315B1 (the "315 patent") and 6257911b1, respectively named as multi-configuration storage circuits, computer storage systems in low power consumption modes, and low insertion force erasing connectors. Dell is accused of infringing these patents on infringing products manufactured, imported and sold in the United States.

Goodman pointed out in the patent document that a storage system provided by Dell for use in a computer system at least infringes the fifth claim of the "315 patent". The computer system has multiple volatile solid-state storage devices. Information is retained when power is applied. The storage device is within a predetermined voltage range and can be placed in a self-refresh mode. It is said that the DDR4 memory product used by Dell meets the requirements of the United States Joint Electronic Equipment Engineering Council Solid State Technology Association (JEDEC), which means that the product meets the required standards and requirements.

The complaint further explained that DDR4 SDRAM is equipped with a high-speed dynamic random access memory with 16 storage areas, which means that there are two or more storage devices in the storage system that can write data to or from it. Data can be retrieved when power is applied to the storage device, and when the voltage reaches a predetermined threshold outside this range, the storage device will no longer retain its current information state. In addition, Goodman claims that the chip requires "a specific range of applied voltage to retain data" as specified by JEDEC. Therefore, the plaintiff used this so-called information, that DDR4 assumes the use of multiple volatile state storage devices that require power, as evidence for its accusation of Dell's use of this patented technology.

In addition, as stated in the patent claims, DDR4 SDRAM is said to "can be placed in self-refresh mode." Claim 5 states that when "the memory device is electrically isolated, any signals received on the address line and control line will not reach the memory device".

According to the complaint, Goodman is seeking declaratory judgment, damages, compensation for costs and expenses, compensation for royalties, and other relief.