ocr: Doing - a - preliminary patent search is not as hard as it sounds. Most large libraries have facilities for doing this, and a librarian can give you instructions on hov to use the computer. The information you can glean from this search often vill be enough to help you justify or alter your game plan for the development of your concept. once you are satisfied that your concept can be patented, you mmay still yant to hire a professional patent-search firm to do - a more extensive, cross-referenced search before you file a patent application.