Reverse passing off often happens when a company selling the product removes the mark and sells it.Below-cost sellingsUnauthorized substitution of one brand of products or goods for anotherRumormongering or trade slander/libel, such as verbal or written communications that would harm or ruin a company’s reputation in the industryCounterfeiting or imitationThe Laws Governing Unfair Competition State unfair competition law mainly governs unfair competition, although issues of false advertisement, trademark infringement, and copyrights often involve federal unfair competition law as well.
Title 16 of the Code of Federal Regulations mainly contains information about specific deceptive trade practices that may cause damage to business and create confusion among consumers.
This intellectual property branch law particularly relates to substituting one company’s products or services for another to mislead the consumers.
A business primarily uses these four devices to distinguish itself from others: Trademarks  Symbols, words, phrases, emblems, slogans, and other devices get used to signify source and authenticity to the public.
A company’s trade dress can also get served by combining specific colors, such as the color red and yellow used by Chevron Chemical Company.
Using generic words or phrasing could limit competition, so these are not eligible for trademark protection.