A computer-based method for evaluating patents is provided. The method includes the steps of: obtaining patents to be evaluated from a database server according to a predetermined patents evaluating date; assigning one or more undertakers to evaluate the patents; gathering basic information of the patents from the database server; providing the undertakers with evaluation parameters of each patent according to the basic information of the patents; submitting evaluation opinions made by the undertakers to relevant patents owners; and receiving evaluation decisions made by the patents owners and sending the evaluation decisions to the undertakers. A related system is also disclosed.