There are a variety of manifestations of intellectual property - trademarks, copyrights, patents. Many things can be copyrighted and patented ... even business methods can be copyrighted! Famously, Amazon patented its so-called "1-click" purchase option, threatening other online sellers who dared to imitate its brilliant invention with lawsuits! Leaving aside conceptual definitions of IP, what are its ultimate effects? The ultimate effects of IP are to prohibit certain sorts of actions by individuals which are construed to be violations of the "intellectual property" rights of others. Now, the essence of property - in a Hoppean/Rothbardian conception - is to assign rights to exclusive use of a physical resource to a specific individual. If John owns a car, that means John has the exclusive right to operate and control the car and to determine who else is allowed to operate and control the car. When the State arrogates to itself the authority to license John's op...