JP2007148630A - Patent analyzing device, patent analyzing system, patent analyzing method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a patent analyzing device, a patent analyzing system and a patent analyzing method for providing words and phrases much more accurately expressing the summary of a published unexamined patent application. <P>SOLUTION: When acquiring a published unexamined patent application for analysis from a official gazette DB device 1 according to input information accepted by an input device 31, a main device 32 executes the language analysis processing of a document included in the published unexamined patent application for analysis, and extracts words and phrases(temporary subject word, temporary subject category) concerning a subject and words and phrases(temporary solution word, temporary solution category) concerning the solution method of the subject for every published unexamined patent application. Furthermore, the main device 32 acquires the explanatory sentence of the patent classification of the official gazette from a classification DB device 2 for every published unexamined patent application, and verifies and examines the validity of the words and phrases concerning the subject and words and phrases concerning the solution method of the subject by using the explanatory sentence of patent classification for every published unexamined patent application, and determines the words and phrases(subject word, subject category, solution word and solution category) expressing the summary of the published unexamined patent application for analysis. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a patent analysis device, a patent analysis system, a patent analysis method, and a program, and more particularly, to a patent analysis device, a patent analysis system, a patent analysis method, and a program for determining a phrase that represents the gist of a patent document.

  An example of a conventional patent analysis program and apparatus is described in Patent Document 1 (Japanese Patent Laid-Open No. 2004-152243).

  The patent analysis program and apparatus described in Patent Document 1 analyze patent information such as a patent specification, extract keywords from the patent information, and create a patent map based on the keywords. Specifically, this device creates a patent map indicating the number of patent information including a keyword designated by the user.

Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-175331) describes a patent classification display device that extracts a patent classification assigned to a patent document and displays a title of the patent classification.
JP 2004-152243 A JP 2002-175331 A

  Since the apparatus described in Patent Document 1 creates a patent map indicating the number of patent information including a keyword, there is a possibility that the patent information cannot be extracted when a special keyword is described in the specification. In other words, the device described in Patent Document 1 cannot extract a word or phrase that facilitates comparison with other patent information, that is, a word or phrase representing the gist of the patent information, with high accuracy. Therefore, the reliability of the created patent map becomes poor.

  Conventionally, this kind of patent analysis program and apparatus extract a word indicating the gist of the published patent gazette using language processing technology. However, in patent documents such as published patent gazettes, since documents are unique, words and phrases expected by the user are not necessarily extracted by a normal language processing technique.

  In addition, in the patent classification display device described in Patent Document 2, the title of the patent classification assigned to the patent document is displayed, but a phrase representing the gist of the published patent publication cannot be extracted with high accuracy.

  An object of the present invention is to provide a patent analysis device, a patent analysis system, a patent analysis method, and a program capable of providing a user with a phrase that more accurately expresses the gist of the patent document.

  In order to achieve the above object, a patent analysis apparatus of the present invention includes a gazette database apparatus that stores patent documents including documents and patent classifications, and a classification database apparatus that stores explanatory text of the patent classification for each patent classification. , A patent analysis device that analyzes the patent document acquired from the publication database device using the classification database device, and an input unit that receives input information for specifying the patent document for analysis; The patent document for analysis specified by the input information received by the input unit is acquired from the publication database device, the explanation of the patent classification included in the patent document for analysis is acquired from the classification database device, and the analysis A control unit for determining a word or phrase representing the gist of the patent document for analysis based on a document included in the patent document and a description of the patent classification; And a display unit for displaying a phrase control unit has determined.

  The patent analysis method of the present invention is connected to a publication database device that stores patent documents including documents and patent classifications, and a classification database device that stores a description of the patent classification for each patent classification, A patent analysis method performed by a patent analysis device that analyzes patent documents acquired from a gazette database device using the classification database device, an input step for receiving input information for specifying a patent document for analysis, and the input An acquisition step for acquiring an analysis patent document specified by information from the publication database device, an acquisition step for acquiring an explanation of a patent classification included in the analysis patent document from the classification database device, and the analysis A word representing the gist of the patent document for analysis based on the document included in the patent document and the explanation of the patent classification Comprising a determining step of determining, and a display step of displaying the determined words.

  The patent analysis system of the present invention includes a publication database device that stores patent documents including documents and patent classifications, a classification database device that stores a description of the patent classification for each patent classification, and the patent analysis device described above. including.

  According to the above invention, the phrase representing the gist of the analysis patent document is determined based on the document included in the analysis patent document and the description of the patent classification included in the analysis patent document. The patent classification indicates the characteristics of the patent document, and the explanation is made up of common words and phrases.

  For this reason, compared with the case where the word or phrase representing the gist of the analytical patent document is determined based only on the document included in the analytical patent document, the decided word or phrase is more accurate than the gist of the analytical patent document. Can be expressed as

  For example, if the gist of the patent document is used as data for creating a patent map, a highly accurate patent map can be created.

  The control unit extracts a word / phrase related to a problem and a word / phrase related to a problem solving method from a document included in the patent document for analysis, extracts a word / phrase from the explanatory text of the patent classification, and relates to the problem It is desirable to determine a phrase representing the gist of the patent document for analysis based on the phrase, the phrase related to the problem solving technique, and the phrase extracted from the explanatory text of the patent classification.

  According to the above-described invention, it is possible to examine carefully whether or not the phrase related to the problem and the phrase related to the technique for solving the problem indicate the gist of the patent document for analysis, using the explanatory text of the patent classification. Therefore, it is possible to determine with high accuracy a word indicating the gist of the patent document for analysis.

  Further, the phrase related to the problem is composed of a problem word indicating the problem and a problem category indicating the category of the problem, and the word / phrase regarding the problem solving technique is a solution word indicating the solution technique, and It is desirable to consist of a solution category indicating a category.

  In addition, when the phrase extracted from the document included in the analysis patent document matches the phrase extracted from the explanatory text of the patent classification, the control unit extracts the gist of the analysis patent document. It is desirable to determine that it is an important word to represent.

  According to the above invention, it is possible to make a word / phrase having a high possibility of showing the characteristics of the patent document among the words / phrases extracted from the patent document as an important word / phrase.

  In addition, the control unit has a synonym dictionary storing synonyms for each phrase, and synonyms of phrases extracted from documents included in the patent document for analysis are extracted from the explanatory text of the patent classification It is desirable to determine that the synonym is an important word representing the gist of the analytical patent document when it matches the word.

  The description of the patent classification is made up of common words and phrases. For this reason, according to the said invention, the phrase with high possibility of showing the characteristic of a patent document is substituted by a general word, and it becomes possible to make the general word a key word. Therefore, it is possible to make a word representing the gist of the patent document not a special word but a general word.

  Further, the input unit further receives a correction instruction for correcting a word representing the gist of the analytical patent document displayed on the display unit, and the control unit is based on the correction instruction received by the input unit. It is desirable to correct the word displayed on the display unit.

  According to the above invention, since the word representing the gist of the patent document displayed on the display unit is almost a general word, the analyst can easily understand whether or not the word is valid. , You can efficiently correct the phrase.

  Further, the program of the present invention is a computer connected to a publication database device that stores patent documents including documents and patent classifications, and a classification database device that stores a description of the patent classification for each patent classification. A program for executing a patent analysis process, an input process for receiving input information for specifying a patent document for analysis, and an acquisition process for acquiring the patent document for analysis specified by the input information from the publication database device Based on the acquisition process for obtaining the description of the patent classification included in the patent document for analysis from the classification database device, the document included in the patent document for analysis, and the description of the patent classification, The computer is caused to execute a patent analysis process including a determination process for determining a word representing the gist of the patent document for analysis.

  According to the said invention, it becomes possible to make a computer perform the said patent-analysis method.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide a user with the phrase which represents the summary of a patent document more correctly.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a patent analysis system according to an embodiment of the present invention.

  1, the patent analysis system includes a patent publication gazette database device (hereinafter referred to as “gazette DB device”) 1, a patent classification code database device (hereinafter referred to as “classification DB device”) 2, and a patent analysis. Device 3. The patent analysis apparatus 3 includes at least an input device (input unit) 31, a main device (control unit) 32 for data processing, a display device (display unit) 33, and a storage device 34.

  The publication DB device 1, the classification DB device 2, and the patent analysis device 3 are connected to each other via a network 4 such as a LAN.

  The publication DB device 1 stores an electronic published patent publication. The publication DB device 1 also stores a published patent publication narrowed down by a patent search system or the like. An open patent gazette is an example of a patent document.

  The published patent publication includes bibliographic items, claims, specifications, drawings and abstracts. Bibliographic items include at least patent classifications such as IPC, FI and F-term. The claims, the description and the abstract are documents.

  The classification DB device 2 stores a description of patent classification for each patent classification such as IPC, FI, and F-term. This descriptive text includes the technical classification name.

  The patent analysis apparatus 3 is a personal computer (PC) or other information processing apparatus and is used by an analyst. The patent analysis apparatus 3 executes various operations by executing a program.

  The input device 31 is a keyboard or a mouse, and receives input information (for example, a publication number) for specifying an analysis published patent publication from an analyst.

  The main device 32 is a computer such as a CPU, for example, and performs the following operation by executing a program stored in a memory (not shown).

  The main device 32 acquires the analysis public patent gazette from the gazette DB device 1 in accordance with the input information received by the input device 31, and then transmits the description of the patent classification included in the analysis public patent gazette to the classification DB device. Obtain from 2. The main device 32 determines a word representing the gist of the analytical open patent gazette based on the document included in the open patent gazette for analysis and the explanatory text of the patent classification.

  Specifically, when the main device 32 obtains the analytical published patent gazette, the main device 32 performs language analysis processing on the document included in the analyzed published patent gazette, and for each published patent gazette, the word (provisional subject word) And provisional problem category) and phrases (provisional solution word and provisional solution category) related to the problem solving technique.

  Further, the main device 32 obtains an explanation of the patent classification of the publication from the classification DB device 2 for each published patent publication, and for each published patent publication, the validity of the words related to the problem and the words related to the problem solving method. The characteristics are verified by using an explanation of the patent classification and examined carefully, and words (problem words, problem categories, solution words, and solution categories) that represent the gist of the open patent gazette for analysis are determined.

  The main device 32 has a synonym dictionary storing synonyms for each phrase.

  The display device 33 displays the words (task words, task categories, solution words, and solution categories) determined by the main device 32.

  Next, the operation will be described.

  FIG. 2 is a flowchart for explaining the operation of the patent analysis system. The operation of this patent analysis system will be described below with reference to FIG.

  When the analyst inputs input information for specifying an analysis patent gazette to the input device 31, the main device 32 executes Step A1.

  In step A1, the main device 32 accesses the publication DB device 1 and extracts an analysis published patent publication according to the input information. The gazette DB device 1 executes step A2 when the analytical open patent gazette is extracted.

  In step A <b> 2, the publication DB device 1 transmits the analysis open patent publication to the patent analysis device 3. When the main device 32 of the patent analyzer 3 receives the published patent application for analysis, the main device 32 executes Step A3.

  In step A3, the main apparatus 32 extracts a temporary problem word, a temporary solution word, a temporary problem category, and a temporary solution category from the document of the analysis open patent publication. When the main device 32 accepts a plurality of analytical open patent publications, it extracts them for each analytical open patent publication.

  The main device 32 extracts a temporary task word and a temporary solution word through three steps of a syntax analysis process using morphological analysis and the like, an extraction process based on the extraction rule, and a post-process.

  In the parsing process, the main device 32 decomposes the abstract document included in the analysis published patent publication into a subject, a predicate, an object, and a modifier.

  After that, the main device 32 extracts “(target word) (modifier)” (for example, “acceleration of processing speed”) from the problem column of the summary as a temporary problem word candidate.

  In addition, the main device 32 extracts “(subject) or (object) + (predicate)” (for example, “terminal is connected”) from the solution section of the summary as a temporary solution.

  In the extraction process, the main device 32 extracts a temporary task word from the temporary task word candidates based on the task word extraction rule. The task word extraction rule is, for example, to extract a temporary task word candidate as a temporary task word if “for the purpose” or “for” is appended to the temporary task word candidate. This is the rule.

  In the post-processing, if the extracted temporary task word and temporary solution word are too long, the main device 32 automatically cuts out a place (punctuation mark) within 200 bytes and having a good delimiter from the temporary word.

  Further, the main device 32 extracts a temporary task category and a temporary solution category by a syntax analysis process using morphological analysis and the like and an extraction process based on the category extraction rule.

  In the parsing process, the main device 32 breaks down the abstract document included in the analytical open patent publication into words.

  In the extraction process, the main device 32 counts the number of occurrences of each word included in the problem column of the summary, and extracts the word having the highest count (for example, the top three) as a temporary problem category. To do. The main device 32 counts the number of appearances of each word included in the solution section of the summary, and extracts the word having the highest count (for example, the top three) as a temporary solution category. .

  When the main device 32 extracts the temporary task word, the temporary solution word, the temporary task category, and the temporary solution category, it executes Step A4.

  In step A4, the main device 32 temporarily stores the temporary problem word, the temporary solution word, the temporary problem category, and the temporary solution category in the storage device 34 for each analysis published patent publication. Step A5 is executed.

  In step A5, the main device 32 extracts a patent classification such as IPC, FI, and F-term for each open patent publication for analysis, and accesses the classification DB device 2 based on the extracted patent classification. Upon receiving the patent classification, the classification DB device 2 executes Step A6.

  In step A <b> 6, the classification DB device 2 transmits an explanatory text corresponding to the patent classification to the patent analysis device 3. When the main device 32 of the patent analysis apparatus 3 receives the explanation of the patent classification, it executes Step A7.

  In step A <b> 7, the main device 32 extracts words / phrases from the description text of the patent classification acquired from the classification DB device 2. For example, the main device 32 extracts words by performing morphological analysis on the explanation text of the patent classification. When there are a plurality of analytical open patent publications, the main device 32 extracts words and phrases from the description of the patent classification for each analytical open patent publication.

  When the main device 32 extracts a phrase from the explanation of the patent classification, it executes Step A8.

  In step A8, the main device 32 uses the words extracted from the explanation text of the patent classification for each of the published patent gazettes for analysis, and uses the temporary task words and temporary solution words stored in the storage device 34. The tentative task category and the tentative solution category are scrutinized, and words (problem word, solution word, task category, and solution category) representing the gist of the published patent publication for analysis are determined.

  Specifically, the main apparatus 32 examines the temporary task word, the temporary solution word, the temporary task category, and the temporary solution category as follows.

  (1) The main device 32 has a word / phrase (provisional problem word, temporary solution word, temporary problem category, and temporary solution category) extracted from the published patent gazette by language processing technology. When the phrase extracted from the description of the patent classification included in the published patent publication matches, the phrase is regarded as an important word (problem word, solution word, problem category or solution category).

  In addition, the main device 32 determines whether the synonym of the phrase among the provisional problem word, the provisional solution word, the provisional problem category, and the provisional solution category is included in the published patent publication in which the word is extracted. If it matches the phrase extracted from the explanatory note, the synonym is regarded as an important word (problem word, solution word, problem category or solution category) instead of the temporary word.

  The main device 32 uses the synonym dictionary (thesaurus dictionary) to select the synonyms of the temporary task word, the temporary solution word, the temporary task category, and the temporary solution category.

  (2) The main device 32 uses the provisional problem word, the provisional solution word, the provisional problem category, and the provisional solution category to describe the patent classification included in the published patent publication in which those words and phrases are extracted. Delete words that do not match or do not resemble the included words.

  (3) The main device 32 matches the phrase included in the “problem or purpose” (for example, 5B035AA) from the viewpoint of the F term included in the published patent publication from which the phrase is extracted, If there is something similar, the word is weighted as important as the task word.

  (4) When the main device 32 has extracted a word related to the configuration from claim 1 and the independent claim of each gazette using a language processing technique, the main device 32 discloses the word / phrase extracted from the word related to the configuration. If there is a word that matches or resembles a word included in the “configuration” (for example, 5B035BA) from the viewpoint of the F term included in the patent publication, the word is weighted as important as a word related to the structure.

  (5) The main device 32 has “˜means” (in terms of the method, “method” if there is a viewpoint of “method” in terms of the F term included in the published patent gazette from which the word is extracted in the temporary solution word. ”” (For example, if there is a word that matches or is similar to a word included in 4B021MP), the word is weighted as important as a solution word.

  In addition, regarding the weighting, the main apparatus 32 may consider the frequency | count of appearance of a phrase. For example, the main device 32 considers that words with a larger number of appearances are more important.

  Further, the main device 32 may weight the word based on whether or not the word extracted from the gazette or the similar word is present in the explanatory text of the higher rank (higher level concept) of the patent classification. . For example, if the word / phrase extracted from the official gazette exists in the explanatory text of the higher rank (higher level concept) of the patent classification, the main device 32 regards the word / phrase as an important word.

  When determining the task word, the solution word, the task category, and the solution category, the main device 32 executes Step A9.

  In step A <b> 9, the main device 32 displays the examined task word, solution word, task category, and solution category on the display device 33. Thereafter, when the analyst operates the input device 11 to correct the examined task word, solution word, task category, and solution category, the main device 32 executes Step A10. In step A10, the main device 32 displays the corrected task word, solution word, task category, and solution category on the display device 33 as the final result.

  In this way, the words extracted from the gazette use the patent classification instead of displaying only the final result suddenly so that the analyst can easily determine whether the extracted words are semantically close or far. Thus, the “problem word, solution word, problem category, and solution category” that are easy to understand for the user are displayed before the final result.

  According to the present embodiment, the following effects can be obtained.

  The first effect is that the automatically extracted task words, solution words, and categories are closer to the words expected by the user.

  The reason is that the patent analysis device 3 examines the words automatically extracted from the published patent gazette by the language processing technique using the explanation text of the patent classification.

  The second effect is that it is possible for the analyst to improve the work of correcting the phrase.

  The reason is that the patent analysis apparatus 3 replaces the phrase automatically extracted by the language processing technique with a more general and representative phrase.

  In the present embodiment, the main device 32 determines a phrase representing the gist of the analysis patent document based on the document included in the analysis patent document and the description of the patent classification included in the analysis patent document. . The patent classification indicates the characteristics of the patent document, and the explanation is made up of common words and phrases.

  For this reason, compared with the case where the word or phrase representing the gist of the analytical patent document is determined based only on the document included in the analytical patent document, the decided word or phrase is more accurate than the gist of the analytical patent document. Can be expressed as

  Therefore, an engineer or an analyst such as a patent searcher can efficiently read a patent gazette.

  Further, for example, if the word / phrase is used as data for creating a patent map, a highly accurate patent map can be created.

  Further, in the present embodiment, the main device 32 extracts the word / phrase related to the problem and the word / phrase related to the problem solving method from the document included in the patent document for analysis, and extracts the word / phrase from the explanatory text of the patent classification, Based on the word / phrase related to the problem, the word / phrase related to the problem solving technique, and the word / phrase extracted from the explanatory text of the patent classification, the word / phrase representing the gist of the patent document for analysis is determined.

  In this case, it is possible to examine carefully whether or not the phrase related to the problem and the phrase related to the problem solving technique indicate the gist of the patent document for analysis, using the explanatory text of the patent classification. Therefore, it is possible to determine with high accuracy a word indicating the gist of the patent document for analysis.

  Further, in this embodiment, when the word / phrase extracted from the document included in the analysis patent document matches the word / phrase extracted from the explanatory text of the patent classification, the main device 32 determines that the word / phrase is that of the analysis patent document. It is determined that this is an important phrase that represents the abstract.

  In this case, among the phrases extracted from the patent document, it is possible to make a phrase having a high possibility of showing the characteristics of the patent document as an important phrase.

  Further, in the present embodiment, the main device 32 has a synonym dictionary storing synonyms for each word and phrase synonyms extracted from a document included in the patent document for analysis are extracted from the explanation text of the patent classification. If it matches the extracted word, the synonym is determined to be an important word representing the gist of the patent document for analysis.

  The description of the patent classification is made up of common words and phrases. For this reason, a word / phrase with a high possibility of showing the characteristic of patent documents is replaced with a common word / phrase, and the common word / phrase can be made an important word / phrase. Therefore, it is possible to make a word representing the gist of the patent document not a special word but a general word.

  Further, in this embodiment, the input device 31 receives a correction instruction for correcting a word representing the gist of the analytical patent document displayed on the display device 33, and the main device 32 receives the correction received by the input device 31. Based on the instruction, the phrase displayed on the display device 33 is corrected.

  In this case, since the word representing the gist of the patent document displayed on the display device 33 is almost a common word, the analyst can easily understand whether or not the word is valid. Work on correcting words efficiently.

  In the embodiment described above, the illustrated configuration is merely an example, and the present invention is not limited to the configuration.

It is the block diagram which showed the patent analysis system of one Example of this invention. It is a flowchart for demonstrating operation | movement of this patent analysis system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Patent publication gazette database apparatus 2 Patent classification code database apparatus 3 Patent analysis apparatus 31 Input apparatus 32 Main apparatus 33 Display apparatus 34 Storage apparatus 4 Network

Claims (14)

Patent documents obtained from the publication database device connected to the publication database device for storing patent documents including documents and patent classifications, and the classification database device for storing explanations of the patent classification for each patent classification, A patent analysis device that analyzes using the classification database device,
An input unit for receiving input information for specifying the patent document for analysis;
The analysis patent document specified by the input information received by the input unit is acquired from the publication database device, the explanation of the patent classification included in the analysis patent document is acquired from the classification database device, and the analysis A control unit for determining a word or phrase representing the gist of the patent document for analysis based on a document included in the patent document for analysis and an explanation of the patent classification;
And a display unit that displays the words determined by the control unit. The patent analysis apparatus according to claim 1,
The control unit extracts a word related to a problem and a word related to a problem solving method from a document included in the analysis patent document, extracts a word from a description of the patent classification, and a word related to the problem A patent analysis device that determines a phrase representing the gist of the patent document for analysis based on a phrase related to the solution to the problem and a phrase extracted from the explanatory text of the patent classification. The patent analysis apparatus according to claim 2,
The phrase related to the task consists of a task word indicating the task and a task category indicating the category of the task,
The patent analysis apparatus, wherein the phrase related to the solution technique of the problem includes a solution word indicating the solution technique and a solution category indicating a category of the solution technique. In the patent analysis device according to claim 2 or 3,
When the phrase extracted from the document included in the analytical patent document matches the phrase extracted from the explanatory text of the patent classification, the control unit represents the gist of the analytical patent document. Patent analysis device that determines a word or phrase. In the patent analysis device according to any one of claims 2 to 4,
The control unit has a synonym dictionary storing synonyms for each word,
When a synonym of a word extracted from a document included in the analysis patent document matches a word extracted from the explanatory text of the patent classification, the synonym is an important word representing the gist of the analysis patent document Patent analysis device that decides. The patent analysis device according to claim 5,
The input unit further accepts a correction instruction for correcting a word representing the gist of the patent document for analysis displayed on the display unit,
The said analysis part is a patent analysis apparatus which corrects the said phrase displayed on the said display part based on the correction instruction | indication which the said input part received.   A patent document database storing patent documents including documents and patent classifications, a classification database apparatus storing a description of the patent classification for each patent classification, and a patent analysis according to any one of claims 1 to 6. And a patent analysis system including the device. Patent documents obtained from the publication database device connected to the publication database device for storing patent documents including documents and patent classifications, and the classification database device for storing explanations of the patent classification for each patent classification, A patent analysis method performed by a patent analysis device that analyzes using the classification database device,
An input step for receiving input information for specifying the patent document for analysis;
An acquisition step of acquiring the patent document for analysis specified by the input information from the publication database device;
Obtaining a description of patent classification included in the patent document for analysis from the classification database device;
A determination step for determining a word or phrase representing the gist of the patent document for analysis based on a document included in the patent document for analysis and an explanatory note of the patent classification;
And a display step of displaying the determined word / phrase. The patent analysis method according to claim 8,
In the determining step, from a document included in the analysis patent document, a word related to a problem and a word related to a problem solving method are extracted, a word is extracted from an explanatory text of the patent classification, and a word related to the problem A patent analysis method for determining a phrase representing a gist of the patent document for analysis based on a phrase related to the solution to the problem and a phrase extracted from an explanatory note of the patent classification. The patent analysis method according to claim 9,
The phrase related to the task consists of a task word indicating the task and a task category indicating the category of the task,
The patent analysis method, wherein the phrase related to the solution method of the problem includes a solution word indicating the solution method and a solution category indicating a category of the solution method. The patent analysis method according to claim 9 or 10,
In the determination step, when a phrase extracted from a document included in the analysis patent document matches a phrase extracted from the explanatory text of the patent classification, the phrase represents an important point of the analysis patent document. Patent analysis method that determines a phrase. The patent analysis method according to any one of claims 9 to 11,
The patent analyzer has a synonym dictionary storing synonyms for each word,
In the determining step, when a synonym of a phrase extracted from a document included in the analysis patent document matches a phrase extracted from the explanatory text of the patent classification, the synonym Patent analysis method that determines that it is an important word to represent. The patent analysis method according to claim 12,
An accepting step of accepting a correction instruction for correcting a word representing the gist of the displayed analytical patent document;
A patent analysis method, further comprising: a correction step of correcting the displayed phrase based on the correction instruction. A program for causing a computer connected to a publication database device for storing patent documents including documents and patent classifications and a classification database device for storing explanations of the patent classification for each patent classification to execute a patent analysis process. There,
An input process for receiving input information for specifying the patent document for analysis;
An acquisition process for acquiring the patent document for analysis specified by the input information from the publication database device;
An acquisition process for obtaining a description of a patent classification included in the patent document for analysis from the classification database device;
A patent analysis process including: a determination process for determining a word representing the gist of the patent document for analysis based on a document included in the patent document for analysis and an explanatory text of the patent classification; The program to be executed.

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