Claim Term Held Indefinite

There is a lot going on in this 51 page claim construction order resolving disputes across the 14 asserted patents.  Some practitioners might find instructive the court’s conclusion that the preamble is limiting, but others might find more interesting the court’s conclusion that a term was indefinite because it was subjective, and the intrinsic record provided no objective standard by which a skilled artisan determine what is and is not a “natural sounding voice”.