This page provides information on the types of patents and types of patent applications, and the examination process. The purpose of this guide is to provide you with basic information about filing a utility patent application with the USPTO.Ply bath tissue having no more than three plies and no fewer than two plies. This Pennsylvania Commercial Item Description covers requirements for paper toilet tissue. 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. Next, distribute Student Worksheet 3- Patent Application . Getting a patent in Pennsylvania is the same as any other state. The patent application is filed with the United States Patent and Trademark Office (USPTO). It also means you don't need to spend tens of thousands of dollars to build a working prototype before your file your patent application with the USPTO.