If anything it could be a sign that the US trial was flawed, because believe me, the Japanese don't particularly like (or benefit from the success of) Korean companies.
Really? Is this because the same things were being tried in both courts? Or because the Japanese are racist? Or perhaps because the Japanese don't particularly like (or benefit from the success of) Apple?
> Japan and South Korea have an incredibly poor relationship
That's a overly simplistic. The relationship between Japan and Korea is very complicated. They have a long history together, and a lot of culture in common.
There are certain issues over which there is conflict, and certain classes of people within each country that beat the nationalist drums harder than average, but there's also a lot of mutual admiration, especially among the young. The antagonism won't die down anytime soon, but I'd say the trend is definitely downwards.
"Asia" isn't an homogeneous mass. And historically Japan haven't been overly fond of the Koreans and really have no reason to want to see them succeed.
In Japanese TV, Koreans are often portrayed in the same way as a US tv-show would portray a Mexican in a parodical way, i.e. primitive and under-developed.
I doubt the Japanese courts would hand them any free favours.
Not exactly the same. Samsung's loss against Apple in the US was devastating. It wasn't a clear cut loss for Apple in South Korea. The South Korean court also found against Samsung and banned some of their products.