The arguments that justify intellectual property fall into three major categories. Personality theorists believe intellectual property is an extension of an individual. Utilitarians believe that intellectual property stimulates social progress and pushes people to further innovation. Lockeans argue that intellectual property is justified based on deservedness and hard work.
Various moral justifications for private property can be used to argue in favor of the morality of intellectual property, such as:
1. Natural Rights/Justice Argument: this argument is based on Locke’s idea that a person has a natural right over the labour and/or products which is produced by his/her body. Appropriating these products is viewed as unjust. Although Locke had never explicitly stated that natural right applied to products of the mind,[34] it is possible to apply his argument to intellectual property rights, in which it would be unjust for people to misuse another's ideas.[35] Lokeans argument for intellectual property is based upon the idea that laborers have the right to control that which they create. They argue that we own our bodies which are the laborers, this right of ownership extends to what we create. Thus, intellectual property ensures this right when it comes to production.
2. Utilitarian-Pragmatic Argument: according to this rationale, a society that protects private property is more effective and prosperous than societies that do not. Innovation and invention in 19th century America has been said to be attributed to the development of the patent system.[36] By providing innovators with