Conclusiveness of Certificate of Actions of Ejectment

or Partitions or Possession. In any action or proceeding brought for ejectment, partitions, or possession of land, the certificate of title of a registered owner shall be held in every court to be conclusive evidence, except as herein otherwise provided, that such registered owner has a good and valid title to the land, and for the estate or interest therein mentioned or described, and that such registered owner is entitled to the possession of said land.