If you mention a company in a paper you are writing do you have to use their trademark?

Yes, if you mention a company's name in your paper, it's important to use their trademark correctly. This usually means capitalizing the name as the company designates it, such as "google" instead of "google." However, the requirement can vary based on the context and the style guide you are following (e.g., APA, MLA). Always check the guidelines for proper usage of trademarks in academic writing.