The purpose of this guide is to provide you with basic information about filing a utility patent application with the USPTO. Find the best doctors in your area.Please use one or more of the fields below to begin your search. To apply for a patent, you must file an application and pay required fees. The claims at issue recite administering RAS inhibitors to patients diagnosed as in need of stroke treatment or prevention. If an invention has been described in writing in a patent or other printed publication, it is NOT con-.