Читать книгу Intellectual Property Law for Engineers, Scientists, and Entrepreneurs - Howard B. Rockman - Страница 73

To be patentable, an invention must be shown to work for its intended purpose. Under the Constitutional mandate of Article 1, Section 8, patents can only be granted for advances in the “useful” arts. A patent cannot be granted for an inoperative device or method, and is subject to post‐grant cancellation if the covered device is proven to be inoperative. This is the reason why patents on perpetual motion machines are not granted—they do not work. See Section 4.2 ahead.