This page provides information on the types of patents and types of patent applications, and the examination process. The answer to the contested question of "should a toilet paper roll face over or under when on the holder?" is answered.The answer is it should face OVER. Join us for a presentation on the basics of filing a patent application. A vintage patent drawing for a wrapping or toilet paper roll. The drawing is in black and white and shows six different views of the roll. The artwork you select wraps around the frame for a stunning look from every angle. We're going to talk about a little bit about patents, a little bit about trademarks and we're going to have an expert panel of entrepreneurs. What are the 3 common types of patents? They are utility, design, and plant patents.