Almost two years after a patent dispute, rivals Apple and Samsung will return to the courtroom in a similar trial about smartphone and tablet patents – only this time, with brand new devices , including the Galaxy S3 and iPhone 4S.

The trial, which begins March 31, according to CNET, is the latest in a patent infringement battle that has involved jury trials, International Trade Commission disputes, and even international suits. Apple and Samsung have accused each other of copying features in their smartphones and tablets, and a jury will have to decide who infringed and how much money is due.

To get a clearer understanding of what the patent war is about, CNET put together an FAQ: