A patent is an intellectual home correct that provides the holder, not an working proper, but a correct to prohibit the use by a third party of the patented invention, from a specific date and for a restricted duration (usually twenty years).

Some countries may at the time of registration issue a "provisional patent" and may grant a "grace time period" of 1 12 months which avoids the invalidity of the patent to an inventor who disclosed his invention before filing a patent in a non-confidential basis with the advantage of enabling speedy dissemination of technical inventions data although...