GroupChatter LLC has added cases against Landis+Gyr (6:15-cv-00886), a subsidiary of Toshiba, and Itron (6:15-cv-00900) to the one that it filed against Sensus (6:15-cv-863) just a couple of weeks ago. The three cases assert four patents (7,969,959, 8,199,740, 8,588,207, 9,014,659) against each defendant’s “wide area Advanced Metering Infrastructure (AMI) network that enables remote configuration, operation, and monitoring of utility meters”, namely, L+G’s Gridstream, Itron’s OpenWay, and Sensus’s Flexnet.