Over the last 6 months, Google Now has gone from an idea to a key differentiator when competing against arch rival Apple. Google Now is very good and in many cases beats Siri when it comes to speed of reponse, accuracy of understanding and breadth of knowledge. Google Now simply shines.
Apple has now decided that Google Now violates 2 Apple patents used by Siri (U.S. Patent 8,086,604, and U.S. Patent 6,846,959).
Both patents are related to a "universal interace for retrieval of information in a computer system."
Competition is good for innovation, it is good for consumers and I wish companies would spend less time litigating and more time innovating.
Source : FOSS Patents