Which form of intellectual property BEST protects a fashion brand's slogan or tagline?

A trademark is the form of intellectual property that BEST protects a fashion brand's slogan or tagline. A trademark is a symbol, design, or phrase legally registered to represent a company or product. In the context of fashion, a slogan or tagline used to identify and distinguish a brand's goods or services from those of others can be trademarked. This prevents competitors from using similar slogans that could cause confusion among consumers. For example, 'Just Do It' is a trademarked slogan of Nike, protecting its use in connection with athletic apparel and footwear. Similarly, a fashion brand could trademark a tagline like 'Elegance Redefined' to protect its use in marketing its clothing line. While copyright protects original artistic or literary works, it generally does not apply to short phrases or slogans. Patents protect inventions and discoveries, which are not relevant to slogans. Registering a trademark provides legal protection against infringement and allows the brand to take action against those who use a confusingly similar slogan. Trademark protection can last indefinitely, as long as the trademark is actively used and renewed periodically.