This guide will help you navigate the resources we provide at The Ohio State University Libraries as a Patent and Trademark Resource Center (PTRC). Resources are available for Ohio residents to help inventors and entrepreneurs learn more about protecting their intellectual property.Calfee's patent lawyers assist with the preparation and prosecution of patents for a variety of industries, covering all disciplines. In order to qualify for the Patent Exam, you will need at least a bachelor's degree in one of the specified fields of science or engineering. Intellectual Property covers disputes related to patent, copyright and trademark infringement. Litigation concerning trade secrets also features. 152 of the Invention. 10.6. Goldstein Patent Law has given advice to more than 10000 inventors from all over the United States,and have obtained over 2.000 patents for clients. Each state can approach both of these areas of intellectual property law in slightly different ways. He specializes in trademark and copyright law, as well as in patents.