Comparison To Utility Patents
US utility patents protect the functionality of a given item. Providing the maintenance fees are paid, utility patents are generally valid for up to 20 years from the date of filing (with some exceptions).
Design patents cover the ornamental nonfunctional design of an item. Design patents can be invalidated if the design has practical utility (e.g. the shape of a gear). Design patents are valid for 14 years from the date of issue. There are no maintenance fees.
Read more about this topic: Design Patent
Famous quotes containing the words comparison and/or utility:
“Away with the cant of “Measures, not men!”Mthe idle supposition that it is the harness and not the horses that draw the chariot along. No, Sir, if the comparison must be made, if the distinction must be taken, men are everything, measures comparatively nothing.”
—George Canning (1770–1827)
“Moral sensibilities are nowadays at such cross-purposes that to one man a morality is proved by its utility, while to another its utility refutes it.”
—Friedrich Nietzsche (1844–1900)