Property Rights can be rendered worthless if law cannot protect those rights. Therefore, governments grant to an individual or firm the exclusive legal right to, within a certain period, use intellectual property rights (IPRS) such as copyright, patent, or trademark. Patents are governmental authorizations which ensure that inventors can exclusively produce and sell their inventions for a certain period of time, usually 20 years. Most developed countries provide for the protection and enforcement of IPRS laws. However, IPRS are widely pirated in developing countries. For the last 50 years, the international community has been struggling to establish a consistent international IRPS legal system and environment. At last, the first truly effective and viable international intellectual property protection system - "Agreement on Trade-Related Aspects of Intellectual Property Rights" (TRIPS) - was implemented during the Uruguay Round of GATT. TRIPS requires every member of the WTO to implement the GATT principle of national treatment, so that all foreign IRP owners can receive the same protection as nationals. This thesis focuses on the contents and effects of the new Patent Law in China, as well as the influences of the TRIPS of WTO on the law-revising process in China, the substantive norm of the Chinese Patent Law (e.g. background, purpose, protective objects and constitutive elements, etc.), the related investigative procedure (e.g. application procedure and investigative procedure), the dispute settlement procedure, and the enforcement results.