If you had spent many millions of $'s developing a product, would you sit quietly by, while someone copied it, or registered it's Name in a Market that you were not yet in, in the hope of piggy-backing when you eventually arrived?
The bouncy ball they are arguing about is worth billions of dollars, and comparing the legal battles to arguments between playschool children is an incredibly simplistic approach.
Between them these two companies control a huge slice of the world mobile phone market and the bulk of the tablet market. They are battling for enormous amounts of money,and yes, some serious patent issues are involved.
If you had seen the BBC Top Gear program the other week, when Jeremy Clarkson and James May where in China, looking how the Chinese car industry had progressed over the past few years. Then you would have seen that China are well into cloning anything or everything!.