US patent law gives a patent owner the right to exclude others from making, utilizing, offering to sell, selling, or importing into the...

Patent litigation in the US often involves expert witnesses playing the central role and function of a person of (ordinary) skill in the art (POSITA or PSITA). The expert witnesses assist the court with the professional or technical matters arising in a case where they testify about the complex and technical subject matter involved in the case that is litigated to provide the relevant and necessary information, and opinions as to such matters on account of their skill, techni