Created with difficulty, contested by many and with an ambiguous legal nature, the patent is the legal instrument required to protect the new and useful accomplishments in industry, those creations that represent the uncontested source of richness, prosperity, new products and quality. The patent is a title of protection and not the object of protection as often wrongly presented. It fulfills multiple functions (reward of the inventor, legal protection, sharing and appropriation of the invention, encouragement of research, stimulation of investments, enrichment of technical knowledge etc.) and its utility is now rarely contested. Generally, the patent confers its holder the right to decide if – and how – the invention can be used by third parties.