The legal battle between Apple and Samsung still drags on. Federal judge Lucy Koh, who has presided over many of the key cases for the past five years, has ordered a new trial in the long-running patent infringement lawsuit. Koh, a US District Court judge, ordered the new trial after she decided that instructions given to the jury, in the initial landmark 2012 cases in San Jose, California, incorrectly stated relevant law. At the time, a nine-person jury awarded Apple $1.05bn in damages when it found in favor of the local firm, which had alleged multiple counts of infringement, mainly of design patents. Samsung had countersued, and the two companies filed tit-for-tat lawsuits in many countries, as well as bringing…