The US Patent and Trademark Office rejected Jenner's claim, but the "Keeping Up with the Kardashians" star is already planning an appeal to use the brand name "Kylie" for her growing fashion and beauty lines, reported People.
In 2014, Jenner, 19, filed a US trademark application for the term "Kylie," seeking protection for the term in connection with advertising services.
Minogue, 48, filed a notice of opposition to Jenner's application in February 2016.
Court document submitted by KDB, an Australian-based business representing Minogue, claimed that approval of Jenner's application will confuse audiences and dilute Minogue's brand.