Finally ruling on a hearing held in early December, Judge Koh decided that Apple's billion-dollar verdict won't be getting any bigger - having formally ruled that Samsung did not infringe Apple's patents willfully. Willful infringement is a concept in patent law that is largely self-explanatory (at least in a non-technical sense): did the defendant purposefully or with wanton disregard for obvious risk infringe the plaintiff's patents?
The jury in this trial held that Samsung did willfully infringe. Judge Koh disagreed, overruling the jury's findings on the matter. This finding most likely will not adversely affect Apple's damages award, as willful infringement damages are assessed by a judge, not a jury.