emption

• Thirdly, through analyzing and commenting some classical theories of pre-emption, the author draws the conclusion that pre-eruption is a right in expectancy and a formed right; statutory pre-emption is of the power of real rights, while the contractual pre-emption is of the power of creditor's rights with exception that it is of the power of real rights by public summons
  第三，通过对优先购买权法律性质的几种典型学说逐个评析，得出优先购买权是一种期待权、形成权；法定优先购买权具有物权效力，约定优先购买权只要具备法定公示方式者，才可以认定具有物权效力，否则只具有债权效力。