Rebuttable presumption

legal presumption that can be refuted

Both in common law and in civil law, a rebuttable presumption (in Latin, praesumptio iuris tantum) is an assumption made by a court, one that is taken to be true unless someone comes forward to contest it and prove otherwise. A rebuttable presumption is often associated with prima facie evidence.Rebuttable presumptions in criminal law are somewhat controversial in that they do effectively reverse the presumption of innocence in some cases.
See more at Wikipedia.org...

Usually, every element of a case must be proven to a judge or a jury. - (read more on Rebuttable presumption)