U.S. Patent History - Creation of the U.S. Patent system

"On April 10, 1790, President George Washington signed the bill which laid the foundations of the modern American patent system. The U.S. patent system was unique; for the first time in history the intrinsic right of an inventor to profit from his invention is recognized by law. Previously, privileges granted to an inventor were dependent upon the prerogative of a monarch or upon a special act of a legislature."