A trademark is any word, photograph, or symbol that is used to identify specific products or services. Permission is not required to use a trademark if:
Informational (or “editorial”) uses of a trademark do not require permission. These are uses that inform, educate, or express opinions protected under the First Amendment of the United States Constitution—freedom of speech and of the press. For example, permission is not required to use the Chevrolet logo in an article describing Chevrolet trucks, even if the article is critical of the company. Similarly, if you are making a documentary film on the history of American trucks, you do not need permission to include the Chevrolet logo. However, the use of the logo must have some relevance to the work. For example, it would not be wise to publish an article critical of overseas auto manufacturing practices and include the Chevrolet logo unless Chevrolet were mentioned in the article.
When using a trademark in text for informational purposes, it is not necessary to include the