A fundamental tenet of patent law is that the owner of a patent can preclude others from using or manufacturing inventions that the patent covers. Because of eminent domain, however, that there is a major loophole regarding the U.S. government.
Section 1498(a) of Title 28 of the U.S. Code says, in part:
“Whenever an invention described in and covered by a patent of the United States is used or manufactured by or for the United States without license of the owner thereof or lawful right to use or manufacture the same, the owner’s remedy shall be action against the United States in the United States Court of Federal Claims for recovery of his reasonable and entire compensation for such use and manufacture.”
(Section 1498(b) provides similarly with respect to copyright infringement by the United States.) (more…)