Patent Family Law and Legal Definition

A patent family is a set of patents taken in various countries to protect a single invention, by a common inventor. Patent families may be referred as equivalent patent publications corresponding to a single invention, covering different geographical regions. By owning a patent family the same invention is protected in all the countries from where the patent is taken. A patent family is the same invention disclosed by a common inventor(s) and patented in more than one country [U.S. Patent and Trademark Office].