e.Digital filed two separate suits against Best Buy, Guitar Center, J&R Electronics, KORG, Kraft Music, Sam Ash Corporation, Sweetwater Sound, and Yamaha, alleging that portable recorders/samplers made by KORG and Yamaha and sold by Best Buy, Guitar Center, and J&R infringe four patents related to a handheld record and playback device with flash memory, recording voice messages on flash memory, a flash memory file system, and editing in a handheld recorder.  e.Digital has filed three prior suits since March 2008 against more than 10 companies  including  Canon,  Casio, Coby, LG, Nikon, Olympus, Samsung, and Sanyo.  10/22, Southern District of California, assigned to Judge Gonzalo P. Curiel and referred to Magistrate Judge Ruben B. Brooks, 3:2012cv02571; assigned to Judge John A. Houston and referred to Magistrate Judge William V. Gallo, 3:2012cv03580.