The present invention relates to a kind of method and system, use patent information determines promising technology. More specifically, the present invention analyzes the document stored in patent information database, compares the information submitted in primary keyword and main opener's patent application document and parsed in special time period, determine the analysis of promising technology bank. Disclosed promising technology determination method is the following steps are included: (one) generates search expression; (2) the nearest patent list of the search through patent information Database and past patent list are from predetermined point; (3) the key patent catalogue and applicant for creating keyword are based on key patent catalogue from nearest patent list and past patent; D selects promising memory technology to be based on key with applicant's patent list from the key patent catalogue based on keyword. The present invention can be searched through patent information database, establish nearest patent list and past patent list, it creates and compares key patent catalogue and the critical patent list of applicant based on keyword and be based on from nearest patent list and past patent list to select promising technology, high reliablity. ;The 2015 of copyright KIPO submissions
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