Your focus while preparing drafting for the exam should be to practice writing patent applications for simple mechanical or pharma inventions. This process includes consulting, drafting, filing, and responding to the USPTO to get an approved patent.First, every patent claim needs a preamble, which is the introductory phrase in a claim. Second, every patent claim needs a transition. All Patent Attorneys must pass the United States Patent Bar Exam. Actually, when preparing a Patent Application, state law is not involved. As a registered Patent Agent you can represent clients before the patent office writing and prosecuting patents. Because you will graduate with a physics degree, you're patent bar exam eligible and you don't need a PHD degree.