Persaingan curang merupakan fenomena yang kerap ditemui dalam dunia perdagangan. Konvensi Paris mengatur mengenai persaingan curang dan mewajibkan negara peserta untuk memberikan perlindungan yang efektif terhadap tindakan persaingan curang. Indonesia sebagai negara peserta dari Konvensi Paris belum mengatur persaingan curang secara khusus dan komprehensif dalam undang-undang. Berbeda halnya dengan Korea Selatan yang juga merupakan negara peserta Konvensi Paris mengatur persaingan curang dalam undang-undang yang dinamakan Unfair Competition Prevention Act (“UCPA”). Pengaturan persaingan curang sangat diperlukan untuk memberikan perlindungan kepada pemilik merek terhadap tindakan persaingan curang dalam bidang merek. Melalui penelitian yuridis-normatif, peneliti menganalisis hubungan antara persaingan curang dengan merek, khususnya unsur persaingan curang pada pelanggaran merek. Hasil penelitian menyarankan bahwa perlu dibentuk Undang-Undang Persaingan Curang di Indonesia untuk dapat memberikan perlindungan yang lebih efektif kepada pelaku usaha sebagaimana diamanatkan oleh Konvensi Paris.

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Unfair competition is a phenomenon that is often encountered in the world of trade. Paris Convention regulates unfair competition and requires participating countries to provide effective protection against unfair competition. Indonesia as a participating country of the Paris Convention has not specifically and comprehensively regulated unfair competition in its national law. In contrast, South Korea, which is also a participating country of the Paris Convention, regulates unfair competition in an act called the Unfair Competition Prevention Act (“UCPA”). The regulation of unfair competition is very necessary to provide protection to trademark owners against acts of unfair competition in the field of trademarks. Through juridical-normative research, the researcher analyzes the relationship between unfair competition and trademarks, especially the element of unfair competition in trademark infringement. The results suggest that it is necessary to establish an Unfair Competition Act in Indonesia in order to provide more effective protection to business owners as mandated by the Paris Convention.