A trademark is a recognizable sign, design, or expression that identifies and distinguishes products or services of a particular source from others. It can include words, logos, symbols, or even sounds. Trademarks help consumers identify the origin of goods and services, ensuring they receive quality and consistency. Registering a trademark provides legal protection, preventing others from using a similar mark that could confuse consumers. This protection encourages businesses to invest in their brands, fostering competition and innovation in the marketplace. Well-known trademarks, like those of Coca-Cola or Nike, become valuable assets for companies.