

At KSN Bangkok Co., Ltd., we are a full-service law firm based in Bangkok, Thailand, offering professional, client-centered legal solutions to individuals, entrepreneurs, and corporate clients, locally and internationally. With a team of experienced and dedicated lawyers, we provide tailored legal services across a wide range of practice areas.
Our approach is built on a commitment to strategic thinking, legal precision, and protecting our clients’ best interests. Whether you are establishing a business, navigating a dispute, managing a property investment, or planning your estate, we are here to guide you every step of the way.
With deep knowledge of Thai law and practical experience across industries, we act not just as legal advisors, but as your legal partner in achieving successful outcomes.
Practice areas
Civil & Human Rights
Our litigation practice covers a broad spectrum of disputes, including commercial disputes, breach of contract, shareholder and partnership conflicts, employment disputes, real estate disputes, inheritance cases, and intellectual property claims. We also handle criminal defense cases, providing strong representation for clients facing criminal allegations, fraud claims, financial crimes, regulatory violations, and other offenses.
From the initial case assessment to trial representation and appeals, our team ensures thorough case preparation, strong legal arguments, and strategic courtroom advocacy. We work tirelessly to safeguard our clients’ rights, mitigate legal risks, and achieve the best possible outcomes in court proceedings.
Criminal Defense
Our litigation practice covers a broad spectrum of disputes, including commercial disputes, breach of contract, shareholder and partnership conflicts, employment disputes, real estate disputes, inheritance cases, and intellectual property claims. We also handle criminal defense cases, providing strong representation for clients facing criminal allegations, fraud claims, financial crimes, regulatory violations, and other offenses.
From the initial case assessment to trial representation and appeals, our team ensures thorough case preparation, strong legal arguments, and strategic courtroom advocacy. We work tirelessly to safeguard our clients’ rights, mitigate legal risks, and achieve the best possible outcomes in court proceedings.
Business
A core focus of our corporate services is helping clients establish and structure their business entities to align with their operational needs and long-term goals. We assist entrepreneurs and corporations in selecting the most suitable corporate structure, considering ownership restrictions, taxation, liability management, and industry-specific regulations. Our legal team advises on company formation, shareholding structures, joint ventures, shareholder agreements, and licensing requirements, ensuring that businesses operate efficiently within Thailand’s legal framework.
We also specialize in Mergers & Acquisitions (M&A), offering strategic legal guidance to companies engaging in acquisitions, mergers, and joint ventures. Our M&A services include legal due diligence, transaction structuring, contract drafting, and regulatory approvals. We work closely with clients to identify potential risks, optimize deal structures, negotiate favorable terms, and ensure compliance with Thai laws and international business regulations. Whether acquiring or selling a business, restructuring ownership, or forming a strategic alliance, we ensure smooth transactions and seamless integration.
Beyond business formation and M&A, our firm provides contract negotiation, drafting, and review services to protect our clients’ commercial interests. We assist businesses with joint venture agreements, partnership agreements, service contracts, distribution agreements, and franchise arrangements, ensuring that all contractual terms are clear, enforceable, and aligned with our clients’ strategic objectives. Our legal team also advises on dispute resolution mechanisms, helping clients mitigate risks and avoid litigation by incorporating strong contractual protections.
Corporate compliance and governance remain a top priority for businesses operating in Thailand. We provide expert guidance on corporate governance best practices, Board of Investment (BOI) promotions, factory license and Industrial Estate Authority of Thailand (IEAT) permissions, licensing, taxation, and regulatory compliance. Our legal team works proactively to help clients navigate foreign business restrictions, mitigate compliance risks, and ensure full legal adherence to Thai corporate laws.
For businesses looking to expand, restructure, or exit the market, we assist with corporate restructuring, capital adjustments, business consolidations, and liquidation procedures. Additionally, we advise foreign investors and multinational corporations on cross-border transactions, investment strategies, and the legal requirements for operating in Thailand, ensuring full compliance with foreign investment laws and financial regulations.
Consumer Rights
From the initial case assessment to trial representation and appeals, our team ensures thorough case preparation, strong legal arguments, and strategic courtroom advocacy. We work tirelessly to safeguard our clients’ rights, mitigate legal risks, and achieve the best possible outcomes in court proceedings
Employment & Labor
For businesses operating in Thailand, compliance with labor laws is crucial to avoiding disputes, regulatory penalties, and reputational risks. Our firm provides strategic legal counsel on employment-related matters, ensuring that companies establish clear and enforceable employment structures while protecting their interests.
Despite best efforts in compliance, labor disputes can arise in any workplace. We provide expert legal representation in employment-related disputes, assisting clients in negotiations, mediation, and litigation before the Labor Court.
Family
Our Family Law Services Include:
Marriage & Prenuptial Agreements
We assist with marriage registration, drafting and reviewing prenuptial agreements, and ensuring financial and asset protections.
Divorce & Separation
Our firm handles both mutual consent divorces and contested divorce proceedings, including asset division, alimony, and financial settlements.
Child Custody & Parental Rights
We provide legal representation in custody disputes, parental rights matters, visitation agreements, and child support claims, ensuring the best interests of the child are prioritized.
Adoption & Guardianship
We guide clients through domestic and international adoptions, ensuring full compliance with Thai adoption laws and regulatory requirements.
Spousal & Child Support Claims
We assist in establishing, negotiating, and enforcing financial support agreements following separation or divorce.
Family Law Litigation & Dispute Resolution
Family disputes can sometimes escalate to litigation, requiring strong legal representation to protect our clients’ interests. Our firm has extensive experience handling family law litigation, representing clients in divorce lawsuits, custody battles, property disputes, and enforcement of court orders. We advocate for our clients in Thai family courts, ensuring that their rights are upheld and that fair, legally sound solutions are reached.
Whenever possible, we encourage mediation and amicable settlements to minimize stress, costs, and prolonged legal conflicts. However, when litigation is necessary, our experienced legal team provides assertive courtroom representation to secure the best outcomes for our clients.
Lawsuits & Disputes
Our litigation practice covers a broad spectrum of disputes, including commercial disputes, breach of contract, shareholder and partnership conflicts, employment disputes, real estate disputes, inheritance cases, and intellectual property claims. We also handle criminal defense cases, providing strong representation for clients facing criminal allegations, fraud claims, financial crimes, regulatory violations, and other offenses.
From the initial case assessment to trial representation and appeals, our team ensures thorough case preparation, strong legal arguments, and strategic courtroom advocacy. We work tirelessly to safeguard our clients’ rights, mitigate legal risks, and achieve the best possible outcomes in court proceedings.
ALTERNATIVE DISPUTE RESOLUTION
Litigation is not always the most efficient or desirable option for resolving disputes. At KSN Bangkok Co., Ltd., we offer alternative dispute resolution (ADR) services, including negotiation and mediation, to help clients resolve conflicts amicably, avoid prolonged court battles, and maintain business relationships.
- Negotiation & Mediation – Our legal team facilitates constructive discussions between parties, seeking mutually beneficial solutions to disputes without the need for litigation.
- Settlement Advisory – We assist in structuring and negotiating settlements that protect our clients’ legal and financial interests.
Real Estate
At KSN Bangkok Co., Ltd., we provide comprehensive legal services for real estate investment, property transactions, and property management in Thailand. Whether assisting individual investors, developers, corporations, or foreign buyers, our legal team offers strategic guidance, due diligence, and regulatory compliance support to ensure that real estate transactions are conducted smoothly, securely, and in full compliance with Thai laws.
Thailand’s real estate market presents significant investment opportunities, but it also comes with complex legal requirements and regulatory challenges. Our firm helps clients mitigate risks, navigate property laws, and secure their investments by providing expert legal counsel at every stage of the transaction process from property acquisition and leasing to asset management and dispute resolution.
Our Real Estate Legal Services Include:
Due Diligence for Land and Property Transactions
We conduct thorough legal and financial due diligence to verify land ownership, title deeds, zoning laws, encumbrances, and potential legal risks before property purchases.
Corporate Real Estate Due Diligence
We assist businesses in conducting corporate property due diligence, ensuring that commercial real estate acquisitions or leases comply with Thai corporate and investment laws.
Financial Due Diligence for Real Estate Investments
We provide legal reviews of financial records, investment agreements, and tax implications related to property transactions.
Land Purchase & Sales Agreements
Our firm drafts and reviews sale and purchase agreements, lease contracts, and investment agreements, ensuring they align with legal protections and investor interests.
Foreign Property Ownership & Investment Structuring
We advise foreign investors on legal options for property ownership in Thailand, including leasehold agreements, BOI-approved property investments, and corporate ownership structures.
Real Estate Development & Joint Ventures
We assist property developers and investors in joint venture agreements, land development projects, and regulatory approvals.
Property Lease Agreements & Landlord-Tenant Disputes
We draft and review rental contracts, commercial lease agreements, and property management contracts, protecting the rights of both landlords and tenants.
Real Estate Litigation & Dispute Resolution
We represent clients in property disputes, breach of contract cases, title deed conflicts, and land encroachment claims, ensuring that their legal rights are protected in court or through alternative dispute resolution.
Our Partners and Associates

Thanissa Khunphasee is an accomplished legal practitioner with over ten years of experience in civil, criminal, and corporate law. A member of the Thai Bar and a certified Notarial Services Attorney, she is also a Co-Founder and Partner at KSN Law & Partners, where she plays a central role in leading complex legal matters for both individual and corporate clients.
Thanissa specializes in dispute resolution and litigation, with a strong track record in handling high-stakes civil and criminal cases. Her experience includes breach of contract, tort claims, debt recovery, business fraud, defamation and regulatory offenses. She is adept at navigating clients through all stages of litigation, from pre-dispute negotiation and risk assessment to courtroom representation and enforcement of judgments.
In civil law, Thanissa advises on a broad spectrum of legal issues, including commercial disputes, property and lease conflicts, and personal injury claims. She is known for her ability to resolve matters efficiently while safeguarding her clients’ interests through both litigation and alternative dispute resolution methods.
Her criminal law practice includes defending clients in cases involving fraud, embezzlement, and other economic crimes, as well as representing victims in seeking remedies under criminal procedures.
In addition, Thanissa provides legal counsel in family and succession law, including divorce proceedings, custody disputes, inheritance planning, and probate matters. Her guidance combines legal precision with empathy, particularly in emotionally charged cases.
Her work in corporate law involves contract drafting, business structuring, and regulatory compliance, with a focus on minimizing legal risks and ensuring operational integrity for Thai and foreign-owned businesses.
Thanissa is widely respected for her strategic thinking, thorough legal analysis, and unwavering commitment to her clients. Her ability to translate complex legal principles into clear and actionable advice makes her a sought-after advisor in both contentious and non-contentious matters.

Ard Sakuntanakalap is a trusted legal advisor with over ten years of experience specializing in Corporate and M&A, Real Estate, and Hospitality Law. As Co-Founder and Partner at KSN Law & Partners, Ard plays a key role in advising both domestic and international clients on high-value transactions and regulatory compliance. His practice spans multiple jurisdictions, including Thailand, Vietnam, the British Virgin Islands (BVI), and Seychelles, making him a go-to counsel for cross-border matters.
In the area of Corporate and M&A, Ard is highly regarded for his ability to structure and negotiate complex corporate transactions, including mergers, acquisitions, joint ventures, and corporate restructuring. He is particularly experienced in advising on foreign direct investment (FDI) matters, especially under Thailand’s Board of Investment (BOI) and Foreign Business Act (FBA). His strategic insight helps clients efficiently navigate the regulatory framework while protecting their business interests.
Ard also brings extensive experience in real estate law, where he regularly handles property acquisitions, leasing agreements, and development projects. His work includes legal due diligence, contract negotiation, and compliance with zoning, licensing, and land-use regulations. His comprehensive understanding of both legal and commercial aspects ensures smooth execution of real estate transactions.
In the hospitality sector, Ard provides tailored legal services to hotel and resort operators, as well as other hospitality businesses. He advises on business structuring, licensing, and regulatory compliance—particularly in obtaining business operation permits and ensuring alignment with tourism and consumer protection laws. His practical legal solutions are designed to support both startup ventures and established players in the hospitality industry.
Clients value Ard for his in-depth legal knowledge, practical problem-solving, and commitment to achieving successful outcomes. His ability to provide well-rounded legal counsel across multiple sectors has earned him long-standing trust from clients across a wide range of industries.
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