PROBLEM TO BE SOLVED: To provide a system for outputting useful information for a translator to efficiently or properly translate an invention document. An invention document analysis system 10 that analyzes an invention document includes a setting information acquisition unit 101 that acquires setting information including condition information indicating conditions for extracting important words, and a document acquisition unit 102 that acquires the invention document. , Information generated based on the analysis result of the analysis unit 105 that analyzes the invention document acquired by the document acquisition unit 102 based on the setting information and the analysis unit 105 of the invention document acquired by the document acquisition unit 102. The analysis unit 105 includes an important word / phrase extraction unit 1051 that extracts important words / phrases from the invention document acquired by the document acquisition unit 102 based on the setting information, and the output unit 108 includes a document. Information generated based on each of the plurality of important words extracted by the important word extraction unit 1051 from the invention document acquired by the acquisition unit 102 is output. [Selection diagram] Fig. 4
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