Trademark (noun)

1. A symbol, word, or phrase that is used to identify a product or service and distinguish it from those of other manufacturers.
2. A legally registered symbol, word, or phrase that is used to identify and protect a company's brand or logo.

Origin:

The word trademark comes from the early 17th century and comes from the phrase "trade mark" which means a distinctive mark used by a person or company to identify their goods and distinguish them from those of other manufacturers.

Examples:

1. The company's trademark is a red and white striped pattern.
2. The golden arches are a trademark of the McDonald's restaurant chain.
3. The company has a trademark on the brand name.
4. The product was sold under a different trademark.
5. The company's trademark was infringed by the knockoff product.