- A certification mark indicates a property standard or regulation and a claim that the manufacturer has verified compliance with those standards or regulations. The specific specification, test methods, and frequency of testing are published by the standards organization. Certification listing does not necessarily guarantee fitness-for-use. Validation testing, proper usage, and field testing are often needed.
- A product produced in an eco-friendly way that does not damage rainforests might display this symbol to show others it is Rainforest Alliance-certified: There are many other seals of approval that products and services can use to show that they meet specific standards. These are certification marks, and like trademarks, service marks, and other types of trademark protection, these marks can also be protected and registered with the United States Patent and Trademark Office to prevent others from creating confusingly similar certification marks.

Certification marks are protected and regulated as a type of trademark under the Lanham Act but serve a distinctly different function in the marketplace. By simple definition, a certification mark is a mark used in commerce by a person other than its owner. See 15 U.S.C. 1127.

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search you complete before applying for a trademark registration to make sure your trademark is available to register for your particular goods or services, and to make sure that no other trademark conflicts with it.