The expansion of field to protect patent incarnates in the extension from practical science to basic science, method patent to business method patent, and from un-standard to standard and the like.

• 专利权领域的扩张体现为应用科学研究向基础科学研究延伸、方法专利向商业方法领域延伸、专利从非标准领域向标准领域扩张等。