https://www.epo.org/en/service-support/faq/searching-patents/asian-patent-information/korea/filing-grant/are-korean

Are Korean patents and utility models subject to substantive examination?

Yes, both patents and utility models are subject to a prior-art search and to substantive examination for novelty, inventive step and industrial applicability. Utility model applications filed between 1 July 1999 and 30 September 2006 were registered without substantive examination, which was abolished for utility models on 1 July 1999 and then re-introduced on 1 October 2006.

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