Change of the legal structure of sales contract, acquisition of title by good will and notification of jus in rem put liability incurred by defects of right into an embarrassing position.

• 买卖契约法律结构的改变、善意取得制度及物权公示原则的确立，造成了权利瑕疵担保责任制度在近现代买卖法体系中的尴尬地位。