[4.1审查范围](4.1%E5%AE%A1%E6%9F%A5%E8%8C%83%E5%9B%B4.md) [4.2无效宣告理由的增加](4.2%E6%97%A0%E6%95%88%E5%AE%A3%E5%91%8A%E7%90%86%E7%94%B1%E7%9A%84%E5%A2%9E%E5%8A%A0.md) [4.3举证期限](4.3%E4%B8%BE%E8%AF%81%E6%9C%9F%E9%99%90.md) [4.4审查方式](4.4%E5%AE%A1%E6%9F%A5%E6%96%B9%E5%BC%8F.md) [4.5案件的合并审理](4.5%E6%A1%88%E4%BB%B6%E7%9A%84%E5%90%88%E5%B9%B6%E5%AE%A1%E7%90%86.md) [4.6无效宣告程序中专利文件的修改](4.6%E6%97%A0%E6%95%88%E5%AE%A3%E5%91%8A%E7%A8%8B%E5%BA%8F%E4%B8%AD%E4%B8%93%E5%88%A9%E6%96%87%E4%BB%B6%E7%9A%84%E4%BF%AE%E6%94%B9.md) [4.7无效宣告程序的中止](4.7%E6%97%A0%E6%95%88%E5%AE%A3%E5%91%8A%E7%A8%8B%E5%BA%8F%E7%9A%84%E4%B8%AD%E6%AD%A2.md)