Andrea Electronics Corporation (AEC) continues its campaign with a new round of lawsuits. The entity asserts a group of five patents (5,825,898; 6,049,607; 6,363,345; 6,377,637; 6,483,923), and filed suit against Acer (2:15-cv-00210), ASUS (2:15-cv-00214), Dell (2:15-cv-00209), HP (2:15-cv-00208), Lenovo (2:15-cv-00212), Realtek Semiconductor (2:15-cv-00215), and Toshiba (2:15-cv-00211). It previously sued Acer, Lenovo, and Toshiba in July 2014, asserting four of the five patents-in-suit (all but the ‘637 patent). Those cases are still open, and the new suits against those defendants assert only the ‘637 patent, while the other recent suits assert all five patents. The patents-in-suit relate to digital signal interference cancelling, and the suits accuse defendants’ personal computer products of infringement.