Section 1808. Judgment obtained to be res judicata in certain cases

A  judgment  obtained  under  this  article  shall  not  be  deemed an
  adjudication of any fact at issue or found therein in any  other  action
  or  court;  except that a subsequent judgment obtained in another action
  or court involving the same facts, issues and parties shall  be  reduced
  by the amount of a judgment awarded under this article.