trademark
n.
Aname, symbol, or other device identifying a product, officially registered and legally restricted to the use of the owner or manufacturer.
It can be seen from its English meaning that trademark is officially registered are legally restricted to the owner and manufacturer.
Trademark is used to identify products. Its dictionary Chinese meaning is: (registered) trademark
logo
n.Aname, symbol, or trademark designed for easy and definiterecognition, especially oneborneonasingleprintingplateorpieceoftype.
A logo can be just a recognition logo. More than just merchandise. Its Chinese meaning is: special mark, mark,