商业外观是由美国法院通过判例法创立的概念，并通过其兰哈姆法案予以保护。
Trade dress, initially created by the United States Courts in their cases, fails to appear in the statutory definitions of Chinese law.
1946年得《兰哈姆法》规定，注册的商标不能包含如汽车或防晒霜之类通用的字眼或短语。
The Lanham Act of 1946 states registered trademarks must not contain word or phrases in general use, such as automobile or suntan lotion.
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