All of a sudden, Samsung drops the patent suit it filed a few days ago. It was an answer to the latest Apple patent complaint and was filed at a US federal court.
Samsung made it clear that it will continue to defend and protect its intellectual property. Samsung has already other claims against Apple in South Korea, Japan, Germany and another one in the USA.
The only possible reason for Samsung to drop this suit is that it was filed in a hurry and probably wasn't prepared that well. We are yet to see how things will turn out.
Source