Voice Tech's patents, according to their abstract, involve "receiving audio data from [a] mobile device at the computer. The audio data is decoded into a command. A software program that the command was provided for is determined. At least one process is executed at the computer in response to the command. Output data is generated at the computer in response to executing at least one process at the computer. The output data is transmitted to the mobile device."
https://www.theregister.com/2020/02/12/mycroft_patent_troll/