Lawyers for Apple Inc. and Samsung Electronics Co. have narrowed down their cases in advance of a federal patent trial set to begin March 31.

In court filings Tuesday, the companies provided a final list of infringement claims and accused products for the upcoming trial, which focuses on more recent phones and tablets than their 2012 showdown. That trial ended in a $1 billion win for Apple and its legal team from Morrison & Foerster and Wilmer Cutler Pickering Hale and Dorr.