Companies use trademarks to identify either the company itself or the goods and/or services it offers. Trademarks are registered with the United States Patent and Trademark Office (USPTO), which provides legal protection for words, designs, logos, colors, or symbols used for identification. 

Owning a patent, copyright, or trademark for intellectual property is valuable to people who create things. However, many people don't know that there are works that they can use, either in a limited capacity or freely.