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. All test data from the Contractor shall be furnished in the Close-out Manuals, paper format and electronic format on an optical disk. General Provision - 63. What are the 3 common types of patents? They are utility, design, and plant patents.