Answer: patent is the invention-creation that receives legal norm to protect, it is to point to an invention-creation to put forward patent application to national examination and approval authority, after passing examination and approval according to law, grant to patent applicant the exclusive right that enjoys to this invention-creation inside the time that sets. The patent right granted by a country in accordance with its patent law is valid only within the scope of the jurisdiction of that country's law and has no binding force on other countries. Foreign countries have no obligation to protect their patent right. If an invention-creation is patented only in our country, the patentee only enjoys the exclusive right or exclusive right in our country.