《中华人民共和国专利法》从1993年1月1日起扩大了专利保护范围。修改后的第二十五条规定“对下列各项,不授予专利权:(一)科学发现;(二)智力活动的规则和方法;(三)疾病的诊断和治疗方法;(四)动物和植物品种;(五)用原子核变换方法获得的物质。对上款第四项所列产品的生产方法,可依本法规定授予专利权。”修改前被列入不授予专利权范围的“食品、饮料和调味品”和“药品和用化学方法获得的物质”, The Patent Law of the People's Republic of China has expanded the scope of patent protection since January 1, 1993. The amended Article 25 stipulates that “no patent shall be granted for the following items: (1) Scientific discovery; (2) Rules and methods of intellectual activity; (3) Diagnosis and treatment of diseases; (4) (5) Substances obtained by the nuclear transformation method The method of production of the products listed in the fourth paragraph of the preceding paragraph may be granted a patent right in accordance with the provisions of this Law. ”Prior to the amendment, it was included in the“ Food, beverages and condiments ”and“ Medicines and substances obtained by chemical methods ”,