Indonesia’s trademark legal system brings together the protection of well-known marks and the cancellation of trademarks due to non-use for three consecutive years. This study analyzes the conformity of the judges’ considerations in Supreme Court Decision No. 264 K/Pdt.Sus-HKI/2015 with Article 6 paragraph (1) letter b and Article 61 paragraph (2) letter a of Law No. 15 of 2001 on Trademarks, as well as its implications for legal certainty. This study employs a normative legal research method using statutory and case approaches, based on laws and regulations and court decisions analyzed descriptively and qualitatively through legal deduction. The results show that the cancellation of the IKEA trademark was applied through a textual-formalistic approach without adequate consideration of its status as a well-known mark and the alleged bad faith of the local registrant, thereby being inconsistent with the principles of Article 6bis of the Paris Convention. This study recommends that judges balance the provisions on non-use cancellation with the protection of well-known marks and the assessment of good faith in order to ensure legal certainty.
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