以上術(shù)語(yǔ)均用作指商業(yè)、商品或服務(wù)的名稱，但它們并非同義（盡管有些人把它們都當(dāng)作“商標(biāo)”）。差異在于brand (“品牌”）主要指已經(jīng)樹立的，經(jīng)常是著名的且用于廣告的商品名稱，其不是正式的法律術(shù)語(yǔ)，一般不具備法律上的排他權(quán)[1]。brand mark或brand name為“商品商標(biāo)”，常指同一企業(yè)生產(chǎn)或銷售的一系列產(chǎn)品或提供的服務(wù)的名稱，如“長(zhǎng)虹”便是 the brand name of a line of household appliances。與 brand 相比較，trademark (商標(biāo)）為典型的法律術(shù)語(yǔ)，表示經(jīng)登記注冊(cè)之商標(biāo)，具有排他權(quán)，未經(jīng)同意使用則構(gòu)成侵權(quán)，其可以是詞語(yǔ)、符號(hào)等，為制造商或商人所采用以將自己的商品與他人的商品加以區(qū)別[2]。tradename (商號(hào)）是指用于區(qū)分業(yè)務(wù)或職業(yè)的名字或標(biāo)記，有時(shí)也可當(dāng)作商標(biāo)使用，與trademark—樣，其也受到法律的保護(hù)，其多用于表示經(jīng)營(yíng)某種業(yè)務(wù)的公司、企業(yè)、團(tuán)體等實(shí)體的名稱的區(qū)分等[3]。
        
[1]“A word, mark, symbol，design，term, or a combination of these, both visual and oral, used for the purpose of identification of some product or service." Cf. The Publisher's Editorial Staff, Black's Law Dictionary, abridged 6th edition, at p. 130，West Publishing Co. (1991).

[2]“A word, phrase, logo, or other graphic symbol used by a manufacturer or seller to distinguish its product or products from those of others. ”Cf. Bryan A. Gamer, Black's Law Dictionary, 7 th edition, at p. 1500，West Group (1999).

[3]“A name or mark that is used by a person (as an individual proprietor or a corporation) to identify that person's business or vocation and that may also be used as trademark or service mark. Like a trademark or service mark, a trade name is protected by law against infringement. ”Cf. Linda Picard Wood, J. D.，Merriam Webster's Dictionary of Law, at p. 499, Merriam-Webster, Incorporated (1996 ).