The South Korean conglomerate Samsung has become the target of another antitrust investigation concerning suspected abuse of FRAND-pledged standard-essential patents, which the company asserted against Apple in litigation and recently used to sue the Cupertino, California firm over 4G wireless technology utilized for the iPhone 5. This time around, the United States Department of Justice is preliminary probing Samsung, which could lead to a full-blown investigation. If it finds an unlawful use of standard-essential wireless patents on Samsung's part, it'll clear Apple of a possible U.S. import ban sought by Samsung because the iPhone maker had refused to accept a Samsung-suggested per-device royalty fee of 2.4 percent (Apple wanted to pay half a cent per device )… The news comes via Apple's statement on public interest considerations relevant to the investigation of Samsung's complaint, filed with the ITC on Monday, notes patent blogger Florian Müeller on FOSS Patents.