Sony started the little fight by suing LG for what they think are patent infringements on their Blu-Ray players and cell phones. LG is firing back by
asking for any sales of Bravia TVs or PlayStation 3s in North America to be blocked as they think Sony is infringing on four patents for each.
Most likely, we're going to just get all this settled out of court and nothing much will come out of this as far as the public goes. Both companies get 20%+ of their revenue from North America, and will keep on getting that amount as I don't see this going anywhere. Maybe LG can have Sony remove another feature (OtherOS, backwards compatibility) and that will have the same effect of blocking sales rather than trying to sue them.
