On closer look, I think you’re right. I also tried searching the USPTO trademark database by author and by product name and couldn’t find anything. I don’t know

On closer look, I think you’re right. I also tried searching the USPTO trademark database by author and by product name and couldn’t find anything. I don’t know why I thought he had trademarked it. Maybe it could qualify as a common law trademark, but I’m really not sure as this is well outside my area of expertise. https://digital.gov/resources/u-s-trademark-law https://digital.gov/resources/u-s-trademark-law