Answer: C
The legal characteristics of patent rights are mainly relative to traditional property ownership, especially ownership. According to the provisions of the Patent Law, the legal characteristics of patent rights mainly include three aspects, namely exclusivity, territoriality and temporality. The intangibility of the object is also an important feature of patent rights, but intangibility is not a feature of patent rights itself, because intangibility is a feature of all rights. Patent rights are absolute rights and are absolute, but this does not belong to its characteristics relative to ownership.