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. Due to the enactment of the America Invents Act in 2012, this page contains forms for patent applications filed on or after September 16, 2012. We have been providing porta potties to the construction industry and for special events throughout New York City, Long Island and Westchester, New York. The first-to-invent rules will continue to apply to existing patents, and applications filed until March 17,. 2013. What are the 3 common types of patents? They are utility, design, and plant patents. Figs. 1, 2, and 7 of the drawings show a roll or package of paper applied to the holder. Utility Patents – Toilet Paper Roll.