The US federal court decided that Samsung did indeed infringe on several of Apple's patents (including the pinch-and-zoom, bounceback patent) and designs. Samsung got a $1 billion fine. Apple is seeking to ban certain Samsung products (such as the Galaxy S and the S II) from sale in the US.
This is a major win for Apple and a big loss for Samsung. Some fear that this may lead to a blow on the OLED market as well - where Android based devices (mostly made by Samsung) are the main clients of OLED displays currently. On the other hand, this may force Samsung (and other companies) to show new innovations, which perhaps may lead to faster adoption of new technologies including next-gen OLED panels (such as flexible or transparent ones).
According to Goldman Sacks, the phones in the case represent less than 5% of all phones sold by Samsung in the first half of 2012, so this isn't really meaningful in terms of device sales (the Galaxy S3 for example was not included in the case).