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通过对国内外数字版权管理(Digital Rigkcs Management,DRM)技术专利情报的检索,在国际层面上揭示美国已授权和已公开专利数据库、欧洲专利检索网世界范围专利申请数据库和PCT国际专利公报数据库的DRM专利发展态势;在国内层面上根据在我国申请DRM专利的检索结果,分析有关申请量年度变化情况、国内外申请人排名、专利授权等情况。在此基础上,对当前DRM技术的专利发展态势、缘由及相关宏观专利情报进行解析。
Through the search of patent information of digital Rigkcs Management (DRM) technologies both at home and abroad, the United States authorized and published patent databases, the European patent search worldwide patent application database and the PCT international patent publication database are disclosed at the international level DRM patent development trend; at the domestic level based on the results of the DRM patent applications in China, the analysis of the annual changes in the amount of applications, domestic and foreign applicants rankings, patent licenses and so on. On this basis, we analyze the current situation and the reasons of patent development of DRM technology and relevant macro-patent information.