Now that the case has been decided, and Amber Heard has announced she will appeal, Newsweek asked Mark what her prospects are for a successful appeal. The answer is that it will be difficult for her to succeed with an appeal because she has to have grounds for the appellate court to overturn the lower court. The Appellate court does not hear witnesses but makes it decisions based on a transcript of the trial. Unless the judge made a serious error, it will be difficult for her to prevail on appeal.
           The outcome of the case is surprising as a previous defamation case in the United Kingdom had found that Depp was a wife beater. One difference between the cases is the UK case was a bench trial decided solely by a judge without a jury. The United States trial had a jury and the trial was televised to a worldwide audience. The jurors apparently did not believe Heard and her witnesses.
the Newsweek Article