[0] http://techcrunch.com/2011/06/09/nuance-sues-vlingo-again-ov... [1] http://techcrunch.com/2011/12/20/after-years-of-patent-litig...
[0] http://techcrunch.com/2011/06/09/nuance-sues-vlingo-again-ov... [1] http://techcrunch.com/2011/12/20/after-years-of-patent-litig...
EDIT: IANAL and the above is not legal advice but I have some familiarity with patent law
http://www.bizjournals.com/boston/blog/mass-high-tech/2008/0...
List of all acquisitions: https://en.wikipedia.org/wiki/Nuance_Communications#Nuance_a...
In the Boston tech scene, it is pretty well-known what Nuance does and why, and is one of the primary reasons I am very against software patents, despite having several to my name.
Everything else is hopelessly out of date. Today voice recognition happens with DNNs or LSTMs. None of those patents would apply to such methods. They seem to have attempted to patent obvious applications of voice recognition.
http://www.google.com/patents/US6839669
Obviously identifies their old product (and I'm pretty sure I can find prior art for this one) where you could report your own voice and have it, say, open notepad when you say "open notepad". It's about making a computer respond to direct commands, and audio prompts. Seems to me like this would (should ?) never apply to a system that transcribes audio. Any modern interaction system would not be about responding to commands, except in an extremely broad sense.
A page filled with a list of prior art: https://books.google.com.au/books?id=f3IV90zLmaEC&pg=PA209&l...
https://www.google.com/patents/US6785653
Is about interactions with users based on prompts. Essentially a scripted interaction with people
Again this was filed in 2000. There has got to be prior art for this one. I remember using a system that did this before I entered high school, in 1994. And that was a pretty mature program, I bet when it comes to demos and papers you should be able to find systems doing this in the 70s.
Obvious prior art, as the computer is obviously using prompts (e.g. the purchase confirmation) : https://www.youtube.com/watch?v=I7q1cE9_AaQ1 (date: 1989)
https://www.google.com/patents/US7058573
Is about methods to adjust past recognized words on semantic meaning. Seems to be talking about this sort of thing "I was about two" => "I was about to". A neural net recognizer doesn't do this at all.
Also obviously prior art : this IBM engineer explains that this is exactly what he's doing. Judging by that computer this is early 80s: https://www.youtube.com/watch?v=cpdm1O-ob48
http://www.google.ch/patents/US7127393
Is about limiting voice recognition results based on a set of rules. Why would anyone work things this way in 2016 ? It is far easier to just transcribe and respond conversationally to the transcription (or just train a network to respond directly, negating the need for actually having any rules at all. You'd just show the system what to do).
Interesting video: https://www.youtube.com/watch?v=uw8XbmzOG5s