History of patents

Although there is evidence suggesting that something like patents was used among some ancient Greek cities, patents in the modern sense originated in Italy in 1474. At that time the Republic of Venice issued a decree by which new and inventive devices, once they had been put into practice, had to be communicated to the Republic in order to obtain legal protection against potential infringers. England followed with the Statute of Monopolies in 1623 under King James I, which declared that patents could only be granted for "projects of new invention." During the reign of Queen Anne (1702-1714), the lawyers of the English Court developed the requirement that a written description of the invention must be submitted. These developments, which were in place during the Colonial period, formed the basis for modern English and United States patent law.

In the United States, during the colonial period and Articles of Confederation years (1778-1789), several states adopted patent systems of their own. The first Congress adopted a Patent Act, in 1790, and the first patent was issued under this Act on July 31, 1790 (and the subject matter of that patent was for the making of potash).