Computer Circuit Operations LLC has sued Acer, MediaTek, and Rockchip (6:20-cv-00419) in a single Western District of Texas complaint over the provision of devices (e.g., tablets, Chromebooks, SoCs, etc.) that feature Double Data Rate (DDR) controllers (e.g., DDR3, DDR4, LPDDR3, LPDDR4, and/or LPDDR4x controller). Infringement allegations against Acer focus on mobile devices that use certain Mediatek Systems-on-Chip (SoCs) and Rockchip SoCs, with allegations as to Mediatek and Rockchip directed to the supplied SoCs themselves. The new case joins active suits filed separately in the same district against Marvell and Socionext this past January; cases against Arastu Systems and VIA Technologies have both been dismissed with prejudice.