Less then a month after they file a suit against Acer for patent infringement, HP is heading back for round two. It seems they found more areas in which they are irked with over Acer's machines, this time in four separate areas:

The areas of focus of the four patents this time range from thermal management to video control, and are being disputed through a complaint filed with the same court and a separate complaint lodged with the U.S. International Trade Commission.
The wording of the patents is relatively simple and wide-reaching, which is a bone of contention among many who oppose the existing patent law system. That aside, the motivations behind HPs pursuits likely have little to do with the patents themselves, but more that they are seeing Acer as more and more of a threat as it continues to gain marketshare.