A mystery to anyone other than Sony and LG, anyway. While the lawsuit was filed on Tuesday, it seems that the majority of pertinent details aren't being outlined quite yet. It is known that Sony is specifically targeting LG Electronics Mobilecomm USA inc., as well as LG Electronics USA Inc. The lawsuit could touch on many things, but considering LG Electronics Mobilecomm's marketing for cellphones, accessories, and 3G notebooks, we can imagine that it has something to do with that, in one fashion or another.
It also seems that the lawsuit has nothing to do with an actual patent infringement, which is pretty common practice amongst the large tech companies out there. The lawsuit itself was filed in the US District Court for the Central District of California. As of right now, that seems to be about everything we know, regarding Sony's lawsuit against LG. As soon as more is known, we'll update accordingly.