Who's suing who?

Welcome to the fascinating world of mobile phone lawsuits. I hadn't really been following this, but apparently Microsoft sueing Motorola over Android was just the latest in a long line of mobile-related lawsuits, which The Guardian represented like this:

Too confusing? A clearer (and prettier) representation here: http://news.designlanguage.com/post/1252039209

PS. They seem to have patched it all up in the end, by the way. At least between Microsoft and Motorola...