Background
A Korean stock company (Company A) acquired a trademark registered in the United States from a U.S. corporation. Pursuant to Korean domestic law, Company A withheld corporate tax on the purchase price paid to the U.S. seller and remitted that withholding tax to the head of the competent district tax office. Company A subsequently filed a request for rectification with the tax authority, seeking a refund of the withheld amount on the ground that the purchase price did not constitute domestic source income subject to Korean taxation under the Convention between the Republic of Korea and the United States of America for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with respect to Taxes on Income and the Encouragement of International Trade and Investment (the “Korea-U.S. Tax Treaty”).
The district tax office head rejected the rectification request, prompting Company A to bring a revocation action before the courts. The central dispute was whether the payment for the U.S. trademark constituted royalty income under Article 14(4)(b) of the Korea-U.S. Tax Treaty — which would have given Korea taxing rights — or capital gains from the transfer of a capital asset under Article 16(1), over which Korea would have no taxing rights.
The lower court ruled in favor of Company A, finding that the purchase price was not royalty income and that the trademark qualified as a capital asset under Article 16(1) of the Treaty, leaving Korea without taxing jurisdiction over the resulting gain. The tax authority appealed to the Supreme Court of Korea.
The Court’s Holding
The Supreme Court affirmed the lower court’s judgment. On the royalty issue, the Court held that the phrase “gains contingent on the productivity, use, or disposition” in Article 14(4)(b) of the Korea-U.S. Tax Treaty does not cover a fixed purchase price paid for the outright transfer of a trademark; such a payment is not royalty income within the ordinary meaning of that provision.
On the capital asset issue, the Court held that trademarks were included within the definition of “capital assets” under the U.S. Internal Revenue Code as it stood at the time the Treaty was concluded in 1976. Applying the principle that treaty terms should be interpreted in light of the domestic law meaning they carried at the time of conclusion, the Court held that trademarks likewise qualify as “capital assets” for purposes of Article 16(1) of the Korea-U.S. Tax Treaty. Because Article 16(1) allocates exclusive taxing rights over capital gains from such assets to the country of the seller’s residence — here, the United States — Korea had no right to impose withholding tax on the transaction.
The Supreme Court therefore upheld the lower court’s order requiring the tax authority to refund the withheld corporate tax, confirming that the disposition refusing rectification was unlawful.
Key Takeaways
- A lump-sum purchase price for an outright trademark transfer does not constitute royalty income under Article 14(4)(b) of the Korea-U.S. Tax Treaty; only payments contingent on productivity, use, or disposition qualify as royalties.
- Trademarks are “capital assets” under Article 16(1) of the Korea-U.S. Tax Treaty, based on their treatment under U.S. tax law at the time of the Treaty’s conclusion in 1976, and gains on their transfer are therefore taxable only in the seller’s country of residence.
- Courts must interpret treaty terms by their ordinary meaning at the time of conclusion, informed by the domestic legal context of the contracting states, consistent with established principles of treaty interpretation.
- Korean companies purchasing U.S.-registered intellectual property from U.S. corporations may not be required to withhold Korean corporate tax on the purchase price where the transaction falls within the capital gains provisions of the Korea-U.S. Tax Treaty.
Why It Matters
This decision provides important clarity for cross-border intellectual property transactions between Korea and the United States. By firmly distinguishing royalty income from capital gains in the context of trademark sales, and by anchoring the definition of “capital assets” to U.S. tax law as it existed when the Treaty was signed, the Supreme Court has given Korean acquirers of U.S. IP a clear framework for assessing their withholding tax obligations. Companies that have already remitted withholding tax on similar transactions may have grounds to seek refunds.
More broadly, the case reaffirms the Korean Supreme Court’s commitment to good-faith treaty interpretation guided by the Vienna Convention on the Law of Treaties — examining the ordinary meaning of treaty terms, their context, and the object and purpose of the agreement. Tax practitioners advising on inbound or outbound IP acquisitions involving Korean counterparties should review their withholding tax positions in light of this ruling.