Submitting a provisional patent application is easy. You can submit it electronically on the USPTO website.NRS 639.2805 Substances licensed for manufacture in Nevada: Filling prescriptions; labeling of containers. These guidelines set out the practice within the Intellectual Property Office as it relates to patent applications for medical inventions. In a patent application, "prior use" was critical. Search within the title, abstract, claims, or full patent document: You can restrict your search to a specific field using field names. With the application filed, your invention has patent pending status. Suppose chemical compound XYZ is already known, and has been used to treat diabetes. A patent attorney will know and understand the application process very well so you can know you are filling out everything correctly. The first medical use of a known substance can be claimed for use in a method of medical treatment the first time such a use is disclosed.