CN-121998799-A - Intellectual property monitoring and early warning method and system based on knowledge graph

CN121998799ACN 121998799 ACN121998799 ACN 121998799ACN-121998799-A

Abstract

The invention relates to the technical field of information technology and discloses an intellectual property monitoring and early warning method and system based on a knowledge graph, wherein the method comprises the steps of obtaining technical scheme description input by a user and constructing a target technical path; determining a preset patent set based on technical function nodes in a target technical path, analyzing claim texts of the preset patent set, extracting technical function elements, technical means elements and technical constraint elements, constructing a technical path knowledge map, establishing structural mapping for the alignable claim technical paths in the target technical path and the map, keeping a directed connection relationship unchanged and keeping the positions of constraint nodes consistent, comparing constraint point by point under the structural mapping, determining constraint partial order based on parameter intervals, execution sequence and exclusive limitation, judging a dominant relationship, judging a path occupation state when the dominant relationship is established, identifying non-avoidable structural nodes and outputting a structural conflict reasoning result. The invention can reduce misjudgment caused by text matching only.

Inventors

HUANG SHANSHI
SUN HAIXIANG
YANG JUAN
GUAN HONGCAI
ZHANG JIAHUI
ZHENG XIAOZHOU

Assignees

温州市工科院技术经纪服务有限公司

Dates

Publication Date: 20260508
Application Date: 20260123

Claims (10)

1. The intellectual property monitoring and early warning method based on the knowledge graph is characterized by comprising the following steps of: acquiring technical scheme description input by a user and constructing a target technical path; Determining a preset patent set based on a technical function node in a target technical path; obtaining claim text of a preset patent set, analyzing to obtain technical function elements, technical means elements and technical constraint elements, and constructing a technical path knowledge graph comprising technical function nodes, technical means nodes, technical constraint nodes, technical function completion nodes and directional connection relations; establishing structural mapping for a target technical path and a claim technical path which can be aligned at a technical function node level in the technical path knowledge graph, wherein the structural mapping keeps a directional connection relationship unchanged and keeps the positions of constraint nodes in the claim technical path consistent; comparing constraint point by point under structure mapping, determining constraint partial sequence according to the consistency of parameter interval containing relation, execution sequence strong and weak relation and exclusive limit, and judging that the technical path of the claim dominates the target technical path when all mapping points of the technical path of the claim meet the constraint partial sequence; when the dominance is established, judging whether all technical means nodes of the target technical path fall into the constraint action range of the claim technical path, and marking the path occupation state when the dominance is established; Identifying technical means nodes which simultaneously meet branch convergence and reach all feasible paths of a technical function completion node in claim technical paths and are limited by exclusive constraint or strong dependency constraint, and marking non-avoidable structure nodes; And outputting a structure conflict reasoning result based on the path occupation state and the unavoidable structure nodes.
2. The intellectual property monitoring and early warning method based on the knowledge graph according to claim 1, wherein determining the preset patent set based on the technical function node in the target technical path comprises: Mapping technical function nodes in the target technical path to a technical topic node set and a classification node set preset by a technical path knowledge graph; Based on the technical topic node set and the classification node set, screening patents which are earlier in publication date than a target technical path generation time point and satisfy a mapping relation by the technical topic node or the classification node from a patent data source to form a preset patent set; after the preset patent set is formed, a patent identifier and a claim identifier are established for each patent, and the claim identifier is used as an index key of a claim technical path.
3. The intellectual property monitoring and early warning method based on the knowledge graph according to claim 2, wherein the parsing of the claim text of the preset patent set comprises: Performing clause processing on the claim text, identifying limited phrases, and extracting functional description fragments for representing technical purposes as technical functional elements; Identifying action phrase and noun phrase combinations of a characterization structure, step or module as technical means elements; Identifying a parameter range, a sequence word, a dependency trigger word and an exclusive qualifier for defining a technical means applicable condition as technical constraint elements; The technical functional elements, the technical means elements and the technical constraint elements are written into the technical path knowledge graph according to the ternary structures of the functional nodes, the means nodes and the constraint nodes, and constraint type fields and action range fields are written into each constraint node.
4. The intellectual property monitoring and early warning method based on the knowledge graph according to claim 3, wherein the building of the structural map keeping the oriented connection relation consistent with the constraint node position comprises: establishing a function anchor point mapping by using the technical function node of the target technical path and the technical function node of the claim technical path; Under the function anchor point mapping constraint, mapping the technical means nodes of the target technical path to the technical means nodes with the same front connection structure and the latter connection structure in the claim technical path according to the directed edge topological order; mapping the technical constraint nodes positioned between adjacent technical means nodes in the target technical path to the technical constraint nodes positioned between corresponding technical means nodes in the claim technical path; when there are more than two candidate mapping paths, a structure map that maximizes the number of constraint node mappings and has zero number of topological order violations is preferentially selected as the final structure map.
5. The intellectual property monitoring and early warning method based on the knowledge graph according to claim 4, wherein determining the constraint partial order according to the parameter interval inclusion relation comprises: Combining the unit normalization and the homonymy of the parameter names of the constraint nodes of the corresponding parameter intervals in the target technical path and the claim technical path; reading the lower limit value and the upper limit value of the parameter interval constraint node corresponding to the claim technical path, and reading the lower limit value and the upper limit value of the parameter interval constraint node corresponding to the target technical path; When the lower limit value of the parameter interval constraint node corresponding to the claim technical path is larger than or equal to the lower limit value of the parameter interval constraint node corresponding to the target technical path and the upper limit value of the parameter interval constraint node corresponding to the claim technical path is smaller than or equal to the upper limit value of the parameter interval constraint node corresponding to the target technical path, determining that the parameter interval constraint corresponding to the claim technical path is not weaker than the parameter interval constraint corresponding to the target technical path; When any parameter name lacks an upper limit value or lacks a lower limit value in the target technical path, the missing boundary is marked as an open boundary, and only the corresponding boundary of the claim technical path is allowed to be the same open boundary in constraint partial sequence judgment.
6. The intellectual property monitoring and early warning method based on the knowledge graph according to claim 5, wherein determining the constraint partial order according to the execution order strong-weak relation comprises: dividing the sequence constraint node into a fixed sequence constraint, a partial sequence constraint and an exchangeable sequence constraint; when the claim technical path corresponding sequence constraint node is a fixed sequence constraint and the target technical path corresponding sequence constraint node is a partial sequence constraint or an exchangeable sequence constraint, determining that the claim technical path corresponding sequence constraint is not weaker than the target technical path corresponding sequence constraint; When the claim technical path corresponding sequence constraint node is a partial sequence constraint, verifying whether constrained prior technical means nodes in the target technical path are all positioned in front of subsequent technical means nodes based on the directed side relationship after structural mapping, and determining that constraint partial sequence is satisfied when verification is established; when a conditional trigger edge appears in the structure mapping, the path segment corresponding to the conditional trigger edge is used as an independent sequence domain, and sequence strong and weak relation judgment is respectively executed.
7. The intellectual property monitoring and early warning method based on the knowledge graph according to claim 6, wherein determining the constraint partial order according to the exclusive definition consistency comprises: Resolving exclusive constraint nodes in the claim technology path into a unique manner definition or a restricted set definition, and writing the restricted set definition into a set of allowed implementations; under the structural mapping, reading an implementation mode identifier of a technical means node corresponding to the target technical path; when the exclusive constraint node is defined in a unique mode, checking that the corresponding realization mode identifier of the target technical path is consistent with the unique mode identifier; When the exclusive constraint node is limited by the limited set, checking that the target technology path corresponding implementation identifier belongs to the allowed implementation set; When the check is not established, it is determined that the map point constraint partial order is not satisfied and the dominance determination is terminated.
8. The intellectual property monitoring and early warning method based on the knowledge graph according to claim 7, wherein judging whether the technical means node of the target technical path falls into the constraint action range of the claim technical path comprises: Recording a constraint action range starting technical means node identifier and a constraint action range ending technical means node identifier for each technical constraint node; Determining an reachable path segment set identified by a starting point technical means node and an ending point technical means node based on a directed connection relation, and defining the reachable path segment set as a constraint action range; Under the structural mapping, mapping each technical means node of the target technical path to a technical means node corresponding to the claim technical path, and checking whether the corresponding technical means node belongs to the constraint action range; and when all technical means nodes of the target technical path meet the verification, determining that the path occupation state is established.
9. The intellectual property monitoring and early warning method based on the knowledge graph according to claim 8, wherein the identifying of the collision reasoning result of the non-evasive structure node and the output structure comprises: Judging the technical means nodes with the number of leading directional edges entering the same technical means node in the claim technical path not less than 2 as branch merging nodes; Constructing a feasible directional path set by taking a technical function node of the claim technical path as a starting point and a technical function completion node as an end point, and judging the branch merging node as a necessary node when any feasible directional path comprises the same branch merging node; marking the necessary nodes as non-evasive structure nodes when the exclusive constraint nodes or the dependent constraint nodes exist in the constraint nodes associated with the necessary nodes; the structure conflict reasoning result at least comprises a dominance establishment mark, a path occupation state mark, a non-avoidable structure node identification set, a mapping path section identification corresponding to the non-avoidable structure node and a constraint node identification which does not meet the constraint partial order.
10. An intellectual property monitoring and early warning system based on a knowledge graph, which is used for realizing the intellectual property monitoring and early warning method based on the knowledge graph according to any one of claims 1 to 9, and is characterized by comprising the following steps: the target path construction module is configured to acquire technical scheme description input by a user, and analyze technical functions, technical means and technical constraints of the technical scheme description to construct a target technical path; The patent set determining module is configured to determine a preset patent set with a mapping relation with the technical function node in the patent data source based on the technical function node in the target technical path; The map construction module is configured to acquire claim text of a preset patent set, analyze and obtain technical function elements, technical means elements and technical constraint elements, and construct a technical path knowledge map comprising technical function nodes, technical means nodes, technical constraint nodes and directional connection relations thereof; The structure mapping module is configured to establish structural mapping which keeps the consistent connection relation and constraint node position for a right technical path which can be aligned at the technical function node level in a target technical path and technical path knowledge graph by taking the technical function node as an anchor point; The dominant relation judging module is configured to compare constraint point by point under structural mapping, determine constraint partial order according to the consistency of the parameter interval inclusion relation, the execution sequence strong and weak relation and the exclusive limit, and judge that the claim technical path dominates the target technical path when all mapping points of the claim technical path meet the constraint partial order; the path occupation judging module is configured to judge whether all technical means nodes of the target technical path fall into the constraint action range of the claim technical path when the dominant relationship is established, and mark the path occupation state when the dominant relationship is established; The non-avoidable structure identification module is configured to identify all feasible paths which simultaneously meet branch convergence and reach the technical function completion node from the claim technical paths, and the technical means nodes are limited by exclusive constraint or strong dependency constraint, and mark the non-avoidable structure nodes; and the result output module is configured to output a structure conflict reasoning result based on the path occupation state and the unavoidable structure node.

Description

Intellectual property monitoring and early warning method and system based on knowledge graph Technical Field The invention relates to the technical field of information technology, in particular to an intellectual property monitoring and early warning method and system based on a knowledge graph. Background With the continuous deepening of technical innovation activities, various innovation subjects are increasingly pressing the demands for intellectual property risk assessment in the technical development process. Current intellectual property monitoring practices rely primarily on patent retrieval systems and text similarity analysis tools to screen potentially related patents by keyword matching or semantic vector computation. The method has the advantages that structural defects are exposed in the implementation process, firstly, the comparison of a technical scheme and patent claims is limited to surface text characteristics, a dynamic association model among technical function nodes, technical means nodes and technical constraint nodes cannot be established, so that topological dependence of all elements in a technical path cannot be accurately identified, secondly, a multi-layer limiting structure inherent in the patent claims is simplified into a discrete technical feature set, key structural information such as execution sequence constraint, parameter interval limiting and exclusive conditions of the technical means is split in the analysis process, technical path integrity is lost, thirdly, when the technical scheme is provided with a branch merging structure or a complex technical scheme passing through the nodes, the prior art lacks depth analysis capability of path structure conflict, and when the target technical scheme has difference in local technical characteristics but the whole path still falls into the constraint range of the claim structure, the technical nodes cannot be effectively identified, fourthly, a screening mechanism of a patent data source excessively depends on a preset class number system, the analysis range cannot be dynamically constructed according to the functional characteristics of the technical scheme, and a screening result contains a large number of irrelevant patents or key constraint patents. The defects cause the analysis capability of the existing monitoring system on the technical path structure level to be fundamentally insufficient, and whether the technical scheme falls into the claim structure range of the prior patent is difficult to accurately judge, so that the risk early warning result finally lacks the reliability support on the legal level. Disclosure of Invention In view of the above, the invention provides an intellectual property monitoring and early warning method and system based on a knowledge graph, which aim to solve the problem that the corresponding relation between the structural layer and the patent claims is difficult to accurately describe by relying on text similarity calculation or keyword retrieval for patent comparison. In one aspect, the invention provides an intellectual property monitoring and early warning method based on a knowledge graph, which comprises the following steps: acquiring technical scheme description input by a user and constructing a target technical path; Determining a preset patent set based on a technical function node in a target technical path; obtaining claim text of a preset patent set, analyzing to obtain technical function elements, technical means elements and technical constraint elements, and constructing a technical path knowledge graph comprising technical function nodes, technical means nodes, technical constraint nodes, technical function completion nodes and directional connection relations; establishing structural mapping for a target technical path and a claim technical path which can be aligned at a technical function node level in the technical path knowledge graph, wherein the structural mapping keeps a directional connection relationship unchanged and keeps the positions of constraint nodes in the claim technical path consistent; comparing constraint point by point under structure mapping, determining constraint partial sequence according to the consistency of parameter interval containing relation, execution sequence strong and weak relation and exclusive limit, and judging that the technical path of the claim dominates the target technical path when all mapping points of the technical path of the claim meet the constraint partial sequence; when the dominance is established, judging whether all technical means nodes of the target technical path fall into the constraint action range of the claim technical path, and marking the path occupation state when the dominance is established; Identifying technical means nodes which simultaneously meet branch convergence and reach all feasible paths of a technical function completion node in claim technical paths and are limited by exclusive constrain