FOSSPatents has blogged extensively about the litigation in question, but I'll summarize: Apple is trying to short Ericsson on standards-essential patent (SEP)

FOSSPatents has blogged extensively about the litigation in question, but I'll summarize: Apple is trying to short Ericsson on standards-essential patent (SEP) fees that every smartphone manufacturer has to pay. Ericsson has tried to get an iPhone import ban to compel Apple to a licensing discussion. Apple has argued such a ban shouldn't be imposed because iOS users can't just "get an Android". In other words, the exact opposite argument they used about sideloading mobile apps. Apple's position is basically that they shouldn't have to pay for licensing SEP, but app developers should have to pay for being on iOS. In other words, they have a right to licensing fees but Ericsson doesn't. This is hypocrisy, and Apple is trying to have it both ways because Apple is culturally tainted by Steve Jobs.