Apparently, the business model for voice services in the past has been to snap up as many broad patents as possible to keep competitors at bay. I read an interview with a google engineer a couple years back claiming the same thing. They have to carefully work around a patent minefield with their own services and how these patents are holding back better voice search on mobile technology.
https://www.quora.com/Is-anyone-working-on-an-open-source-ve...
Apparently, the business model for voice services in the past has been to snap up as many broad patents as possible to keep competitors at bay. I read an interview with a google engineer a couple years back claiming the same thing. They have to carefully work around a patent minefield with their own services and how these patents are holding back better voice search on mobile technology.