After the expiration of the period of public notice or inspection, the expropriation commission makes a decision to commence the determination proceedings and gives public notice of this decision, and then takes a step to register the commencement of the proceedings in the land registry.
　Once such registration is made, any person who acquires a right to the land, except for the right holder's heir, etc., may no longer assert the transfer of the right against the project initiator. The project initiator and the expropriation commission will thereafter treat the persons who held rights at the time of the registration as the parties to the expropriation proceedings.

《Articles 45-2 and 45-3 of the LandExpropriation Act》