Ecobee sued three Amazon sellers, accusing each of obtaining and reselling ecobee products bearing the ecobee trademark without authorization. Ecobee makes a number of automated, “smart” home control products (thermostats, light controls, and the like) which it sells only through authorized resellers. By contract, these resellers are prohibited from selling to anyone other than consumers. Ecobee asserts that the Amazon sellers obtained ecobee products either through fraud or by tortuously interfering with ecobee’s contracts with its authorized resellers. In addition to trademark and tortious interference claims, ecobee asserts unfair competition and false designation of origin. This is the second such case brought by ecobee in Massachusetts in the past several months. Judge Saris has the case.