Re: @Graham Before people get in to a panic...
I would also note that the appellate court, generically referred to as the patent court, based its decisions on facts not presented in the original case, which as the Supreme Court has noted repeatedly in slapping them down, is wrong.
Appeals are supposed to be decided on issues of the law, with the lower court being (pretty much) the arbiter of issues of fact.
The reason that SCOTUS has been reversing them regularly lately is because the patent court is bat guano insane, and has been for years. (They literally allowed the patenting of a rainy day)