Tax Appeal

• Won litigation for the imposition of corporate tax of 37 billion in relation to L-Electronics overseas payment guarantee commission

• Won litigation for cancellation of the disposition of corporate tax worth KRW 22.5 billion related to Company I's software usage fee

• Won litigation for the cancellation of corporate tax of KRW 12.5 billion related to zero tax rate of L- trading company's purchase confirmation letter

• Won lawsuit for cancellation of KRW 3.2 billion worth value-added tax of D sugar manufacturing company on eatery supply tax invoice

• Won lawsuit for cancellation of KRW 2.2 billion for the disposition in gift tax related to the sale of property contributed by W Foundation

• Won lawsuit against the imposition of KRW 1.2 billion in corporate tax related to the capital expenditure of S company

• Won litigation in the first trial against the imposition of corporate tax of KRW 12.7 billion in relation to the acquisition of shares of 3 public interest corporations including the M Foundation

• Won litigation in the first trial against the imposition of corporate tax of 4.7 billion won in relation to illegal expenses under the Insurance Business Act of Company E

• Won lawsuit in the first trial to cancel the disposition of acquisition tax of KRW 3.5 billion in relation to the sale of rental housing by H E&C

• Won litigation in the first trial for cancellation of the corporation tax worth KRW 1.4 billion in relation to company D's investment conversion and debt-free profit

• Won lawsuit for tax adjudication request to cancel a disposition of KRW 7.4 billion of acquisition tax in relation to the overlapping maintenance infrastructure of the D Union

• Won lawsuit to cancel the disposition of gift tax imposition of KRW 1.2 billion in relation to the pre-taxation review for the acquisition of stocks in the public interest corporation M Museum of Art

Tax investigation and investigation response

• Responded to tax investigation related to corporate tax for K Holdings Qualified Spin-off

• Responded to police investigations under the Tax Offenders Punishment Act for Company H

• Responded to police and prosecution investigations in violation of the Tax Offenders Punishment Act for Company M

Advisory work

• Established tax strategy related to family business inheritance

• Established tax strategies related to mergers between affiliates

• Established tax strategy related to overseas business relocation

• Established tax strategies related to business restructuring, such as division of subsidiaries

• Established tax strategies related to the disposal of title trust stocks

• Analysis of Issues in Case Law and Review of Improvement Measures Regarding Income Classification Criteria for Software Acquisition Payments -Focusing on Two Court Rulings Delivered After 2020- (2025. 4. 30., Seoul Tax Law Review Vol.31-1)
• Special Law Review, Vol. 20 (Contributor, 2025. 1., Judicial Development Foundation under the Supreme Court of Korea)
• A Study on the Application of the “Post-Filing Adjustments” Provisions of the Global Minimum Tax and Related Issues (2024. 9. 30., Journal of IFA Korea Vol.40-3)
• Selected Tax Cases 3 (co-author, 2024. 6. 30., PAKYOUNGSA)
• Assessment of the Current Taxation System and Legislative Improvement Proposals on Treasury Stock Acquisition and Disposal (2023. 11. 30., Seoul Tax Law Review Vol.29-3)
• Understanding American Private Law (co-author, 2023. 3. 30., PAKYOUNGSA)
• Classification criteria for the cost of the introduction of software (2021. 4, The Law Times)
• Criteria for the Distinction of whether the cost of the introduction of software is the introduction of 'technology and know-how' or the simple importation of 'commodity' (2020. 11., International tax studies)
• A Case Study on Teleological Expansion of the Claim of Reassessment by later reasons (2017. 8., master thesis)
• Discussion about whether the uncollectible is subject to the claim of reassessment by later reasons (2016. 10., National tax vol. 596)
• Issues between customs and national taxes in terms of transfer price (2016. 5., National tax vol. 591)
• Whether the tax investigation has the character of administrative disposition (2016. 4., National tax vol. 590)
• The presenter of the Second Agenda, at the Special Litigation Practice Research Committee of the Supreme Court (270th Session), November 2023
• Assessment on inherited properties in the event that there is significant reason to doubt recoverability of monetary account receivables (2016. 1., National tax vol. 587)
• On September 25, 2025, Lecture on “Tax Risk Management for Housing Construction Companies” at the “2025 Second Half Practical Training for Member Companies on Housing Business” hosted by the Korea Housing Builders Association
• On August 22, 2025, participated as a panelist in Session 1 of the Summer Conference of the Korea Tax Research Forum
• On February 28, 2025, Presenter at YIN Winter Seminar, Session 2
• On November 22, 2024, participated as a panelist in the 128th Seminar of the Financial Taxation Forum.
• On October 25, 2024, participated as a panelist in the Taw Law Association Fall Academic Presentation Conference
• On September 6, 2024, Lecture on "Tax Issues Entrepreneurs Need to Know" for the 6th cohort of the Yonsei University Young Owners CEO Program.
• On June 28, 2024, presented at the IFA KOREA's 2024 Monthly International Tax Forum on "Understanding and Analyzing the Application Stage of Post-filing Adjustment Rules under Pillar 2"
• On June 22, 2024, gave a lecture on "Key Issues in Corporate Tax Law" at the 6th mandatory legal education of the Seoul Bar Association.
• On April 13, 2024, participated as a panelist in the Korean Academic Society of Taxation Spring Academic Presentation Conference
• On February 23, 2024, attended as a panelist in Session 1 of the International Fiscal Association YIN KOREA Winter Seminar
• On January 12, 2022, participated as a panelist in the Local Tax Future Forum Winter Seminar
• On November 13, 2021, participated as a panelist in the Korean Academic Society of Taxation Fall Academic Presentation Conference
• Webinar presentation on “Family Business Succession Tax Issue” hosted by Lee & Ko, July 2021
• Presenter at YIN(Young IFA Network Korea) Winter Seminar, January 2021