An apparatus and method for determining patent infringement based on analysis of semantic patent claims are disclosed. A data collection unit for extracting information about the claims of the patent, a vector construction unit for converting the information about the claims into a hierarchical subject-action-object (SAO) vector, and a tree in the transformed hierarchical SAO vector The patent infringement determination device based on the analysis of a patent infringement based on a semantic-based patent claim analysis including a infringement determination unit that determines a possibility of patent infringement by applying a matching algorithm and measuring the similarity with a target technology, provides a basis for determining whether a patent infringement is incurred. By considering the structural similarity and the content similarity of the claims at the same time, it is possible to derive a more accurate evaluation results.
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