There are several types of trademarks including service marks, certification marks, collective marks and trade dress. A service mark does the same thing as a trademark, but instead of promoting products, a service mark promotes events and services. Some familiar service marks include Blockbuster or the FedEx logo. A trade dress refers to distinctive décor or shape or a product or service, such as the yellow packaging of Kodak film. A collective mark is a label, word, symbol or phrase used by members of an organization or group to identify members, products, goods or services rendered. A certification mark is a symbol, device or name used by an organization to vouch for service or products provided by others. This can apply to product quality or service accuracy.