A patent grants an exclusive right over the patent for twenty years and is granted when three important requirements are passed: novelty, utility, and non-obviousness. Out of these important tests, novelty is the most important one. An invention must be novel to qualify it for grant of the patent. The Prior art search is the method of finding the existence of any similar knowledge or literature matching with the current invention. As prior knowledge destroys the patentability of an invention, the Prior Art Search is the most important activity before an inventor writes the specification or files the patent. The Sooner it is done the better it will be.