Practice Areas
Drawing on deep experience and expertise accumulated in each field, Changchun provides legal services optimized for every client.
Corporate Advisory · M&A
We diagnose the legal issues that arise across a company's entire life cycle — from incorporation and operation to sale — and provide optimal solutions, with strong results in shareholder disputes, management-rights defense, and structurally complex M&A projects.
- Corporate governance
- Management disputes
- M&A contracts and advisory
- JTBC Corporate Bond Mis-Selling — Representing Injured Investors Against Alleged Concealment of Capital Impairment
- Complete Victory in a Key Money Refund Claim Arising From a Pharmacy Business Transfer Agreement
- "Half the Company's Shares Are Mine," on the Strength of KakaoTalk Messages Alone — Defeating a Co-CEO's Claims to Equity and Control in Full
Construction · Real Estate
We reconcile the complex interests surrounding land and buildings — urban redevelopment and reconstruction projects, real estate project financing (PF), and trust-related disputes. Practical, field-oriented advice keeps projects moving forward on solid ground.
- Redevelopment
- Reconstruction
- Real estate development and trusts
- Blocking Demands to Void a Pre-Sale Contract and Assume a Loan — The Applicant Withdrew the Entire Mediation Request
- Defeating a Down-Payment Refund Claim Premised on "Termination for Statutory Violation" — Defending a Pre-Sale Developer
- A Sewer Pipe Across the Ceiling of a Purchased Retail Unit — Recovering Damages for an Undisclosed Design Change
Sports · Entertainment
To protect the rights and interests of artists and sports stars, we review exclusive contracts, protect publicity rights, and advise on crisis management, so creators and artists can focus on their craft.
- Exclusive contracts
- Publicity rights disputes
- Management advisory
IT · Startups
We support startups across their entire life cycle, from early-stage regulatory review to fundraising (VC/PE) and pre-IPO advisory, proactively managing legal risk in emerging fields such as digital assets and AI.
- Fundraising
- Regulatory sandbox
- Trade secret protection
- Virtual Assets Lost to Hacking — Is the Exchange Liable? Defeating a Damages Claim by Proving No Causation and No Negligence
- Suspending an Exchange Account at an Investigating Authority's Request Is Lawful — Defeating a Claim for Return of Virtual Assets on Appeal
- A Large Administrative Fine on a Virtual Asset Exchange — Korea's First Revocation
Labor & Employment
We advise on work rules, wage system design, and labor-management consultation in step with the changing labor environment, and deliver reasonable and swift solutions in wrongful dismissal claims and wage litigation.
- HR and labor advisory
- Wrongful dismissal
- Collective bargaining
AML · Compliance
We audit and upgrade the anti-money-laundering systems of financial institutions and businesses subject to Korea's Specified Financial Information Act, and build compliance training and internal control systems.
- AML systems
- Internal controls
- Corporate ethics codes
- Virtual Assets Lost to Hacking — Is the Exchange Liable? Defeating a Damages Claim by Proving No Causation and No Negligence
- Suspending an Exchange Account at an Investigating Authority's Request Is Lawful — Defeating a Claim for Return of Virtual Assets on Appeal
- A Large Administrative Fine on a Virtual Asset Exchange — Korea's First Revocation
Tax
Attorneys with tax practice experience collaborate to provide one-stop support for pre-assessment reviews, tax tribunal proceedings, and administrative litigation, protecting our clients' legitimate property rights.
- Tax audit defense
- Tax tribunal appeals and administrative litigation
- A Travel Ban That Never Ended, Against a Client With No Assets — Proving There Was No Flight Risk and Having the Ban Revoked
- Disclose the "Ambassador Appearance Fees" Paid With Taxpayer Money — Winning an Information Disclosure Suit Against the Seoul Metropolitan Government
- Answering the Suspicion That "the Head Office Is a Sham" — Defeating a Tax Audit Aimed at Heavy Acquisition Tax
Civil · Class Actions
Partner attorneys with extensive trial experience take responsibility for the key decisions in each case, with particular expertise in securing fair compensation in class actions involving many stakeholders, such as product liability and financial damages cases.
- Large-scale class actions
- Damages claims
- Civil disputes
- A Collapsed Import and Distribution Venture — Recovering a Large Sum Paid for Goods From the Counterparty
- A Star Instructor's Breach of a Non-Competition Covenant — Establishing Liability for Liquidated Damages on Behalf of the Academy
- Overturning the First Instance — Protecting a Client Who Took Consigned Paintings as Security Through "Bona Fide Acquisition of a Pledge"
Divorce · Inheritance
We take a considerate approach that minimizes family conflict while clearly securing your rights — from complex property division to family business succession planning.
- Property division
- Custody disputes
- Wills and estate administration
- Securing Recognition of the Defendant's Contribution Share in a Forced Heirship Claim, Leading to a Successful Mediated Settlement
- Complete Victory for the Defendant in a Forced Heirship Claim
- Sharing an Inheritance With a Sibling With Disabilities — Securing Court Approval to Honor the Family's Wishes
Criminal Defense
Through active advocacy from the investigation stage, we stand closely by our clients — from corporate criminal matters such as embezzlement and breach of trust to general criminal cases including sexual offenses and traffic accidents.
- White-collar crime
- Election law violations
- General criminal cases
- Full Acquittal on Embezzlement and Bribery Allegations Involving Hundreds of Millions of Won — Litigating "Legal Elements," Not "Suspicion"
- Acquittal on a Complaint Alleging Misappropriated Investment Funds — The Money Was Repayment of a Debt
- Clearing a False "Road Rage" Accusation With Dashcam Footage — Non-Indictment on Aggravated Intimidation