Historical Analysis of Justification to Protect Trademark Right——On the Basis of the Three Times of The Trademark Changes

Through the formation process of the trademark,there is a process from owner's mark to maker's mark,then to trademark.In the process,mark functions were from distinguishing among persons to articles,then to trademark.The reason from mark to trademark is its use in trade that develops justification to protect trademark right.If mark separates from trade,trademark right would not exist.