This Manual has been prepared in response to repeated demands from developing country Member States for capacity building in patent drafting due to the existing limited professional capacity in this area which is an obstacle to the utilization of the intellectual property system by their nationals. The target audience for this Manual is primarily but not exclusively in developing countries and consists of scientists, researchers, technically trained persons and attorneys with a technical background who wish to draft patent applications. The Manual provides the necessary guidelines and an understanding of the skills needed for drafting a patent application, filing it and working with patent authorities to have it issued as a patent. The primary aim of this Manual is to assist all inventors in protecting their intellectual property through carefully crafted patent applications.