经授权使用他人商标应保证商品质量

Unauthorized use of another's trademark should ensure the quality of goods

保证商品质量就是商标被许可人应履行的法定义务。相对应的，商标许可人就有监督被许可商标的商品质量的法定权利。

Legal obligation to ensure the quality of goods is a trademark licensee should fulfill.Correspondingly,there is oversight trademark licensee licensed trademark goods quality legal rights.