That's a good question. Obviously there are lots of good examples of patent litigation being used strategically for companies to sort out rights in complex areas. There is an ongoing battle in the smart-phone industry, just as there is when every technology changes. Think of the railroad or the telephone. With all the different leaps forward in technology, there were battles over patents.
Usually these things are being sorted out through complicated cross-licensing agreements between companies. Those kinds of licensing agreements are something that Microsoft embraces and looks to take part in wherever they can, because we think it's much better to be involved in cross-licensing of technology to enable products to get to market than to be fighting about them endlessly in court. Sometimes you can't get to a resolution and you need to go forward and have a legal proceeding to determine where those boundaries lie.