In order to register your trademark with the United States Patent and Trademark Office, you need to show that the trademark has been used in interstate commerce*. (Interstate commerce means between states.) So what counts as “use in commerce” is a big question in trademark law. Of course, many businesses are primarily or entirely online these days. So often the best way to show the USPTO that you’re using your mark in commerce is simply to take a screenshot of your website. But does that always work? A recent case reminds us to be careful about the webpage or your…