SIAM JURIS

A Bangkok-based law firm focused on delivering strategic legal solutions where legal complexity and business realities intersect.

ABOUT SIAM JURIS
ABOUT THE FIRM

  1. Senior legal expertise

    A team of highly experienced lawyers with decades of experience across complex legal matters and industries.

  2. Commercial understanding

    We combine legal expertise with a strong understanding of business realities and commercial objectives.

  3. Strategic judgment

    We handle high-value and sensitive matters with precision, discretion, and practical judgment.

OUR EXPERTISE
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  1. Dispute Resolution & Arbitration
    We represent clients in complex civil, commercial, and criminal disputes, as well as arbitration proceedings. Our approach is strategic, focused, and aligned with achieving the best possible outcome in high-stakes situations.
  2. Corporate & Commercial
    We advise on mergers and acquisitions, joint ventures, foreign investment, and commercial contracts, supporting clients throughout the lifecycle of their business operations in Thailand.
  3. Restructuring & Insolvency
    We provide comprehensive legal services in restructuring and insolvency matters, advising companies, creditors, investors, and other stakeholders on debt restructuring, insolvency proceedings, rehabilitation, and related disputes.
  4. Intellectual Property & Technology
    Our team has experience handling trademark, copyright, patent, trade secret, and unfair competition matters, including complex disputes, infringement actions, licensing, technology-related issues, and regulatory proceedings.
  5. Regulatory & Risk Advisory
    We guide clients through regulatory compliance, competition law, and administrative matters, helping them manage legal risks effectively.
  6. Private Client
    We provide discreet advice on sensitive matters, including inheritance disputes, family matters, and personal legal risks.
  7. Land & Real Estate
    Our expertise spans real estate development, land acquisition, construction, infrastructure, industrial operations, environmental compliance, data centers, energy projects, and investment structures. We provide strategic and commercially focused legal advice to investors, developers, corporations, financial institutions, and industrial operators across Thailand. We support clients throughout the entire project lifecycle, from planning and acquisition to development, execution, and long-term expansion.
PEOPLE
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Chavalit Uttasart

Managing Partner

Chavalit Uttasart is a senior lawyer with more than four decades of experience in dispute resolution, intellectual property, corporate and commercial law. He is widely recognised for his expertise in complex litigation, strategic dispute management, and high-value commercial matters.

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Punjaporn Kosolkitiwong

Managing Partner

Punjaporn Kosolkitiwong is a highly experienced disputes lawyer with more than four decades of practice in litigation and arbitration. She advises and represents clients in a broad range of contentious matters, including civil and criminal litigation, intellectual property disputes, tax disputes, administrative proceedings, restructuring and insolvency, and labor matters.

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Kallayarat Chinsrivongkul

Partner

Kallayarat Chinsrivongkul is one of Thailand's leading patent practitioners, with more than 30 years of expertise in intellectual property law. She advises domestic and international clients on all aspects of patent protection, including patent prosecution, infringement and validity matters, third party observations, restoration of patent rights, patent portfolio management, and intellectual property protection strategies in Thailand and neighboring jurisdictions, particularly Laos and Cambodia.

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Malinee Kriengkrailipikorn

Partner

Malinee Kriengkrailipikorn is a corporate and commercial lawyer advising on a range of corporate transactions, investments, and restructuring matters. She brings a strong combination of legal expertise and commercial acumen, supporting clients in navigating strategic decisions, regulatory frameworks, and legal compliance.

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Pasayu Israsena Nah Ayudhaya

Partner

Pasayu Israsena Nah Ayudhaya is a disputes lawyer with significant experience in complex, high-value litigation and arbitration. He advises and represents international and Thai clients in commercial, corporate, and criminal matters, with a particular focus on strategically sensitive and high-stakes disputes.

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Wannaporn Siribunjirdsak

Partner

Wannaporn Siribunjirdsuk is a disputes lawyer with over 20 years of experience in civil and commercial litigation. She advises and represents clients in a wide range of contentious matters, including commercial disputes, labor cases, intellectual property disputes, and tax-related matters.

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Chalisa Uttasart

Counsel

Chalisa Uttasart is a Thai-licensed lawyer with experience in business immigration, corporate and commercial matters, legal research, legal translation, and cross-border legal work. She advises and supports international and domestic clients in navigating Thai legal and regulatory requirements, with a particular focus on providing practical and commercially minded solutions.

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Thawan Suprom

Attorney-at-Law

Thawan Suprom is a disputes lawyer with over 25 years of litigation experience. He advises and represents clients in administrative, corruption and misconduct, family and inheritance, commercial, labor, civil, and criminal matters.

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Nattanun Decharit

Attorney-at-Law

Nattanun Decharit is an attorney-at-law whose practice focuses primarily on dispute resolution and litigation. He has experience representing and advising clients in a broad range of disputes before Thai courts, including investment disputes, international trade and commercial disputes, bankruptcy and restructuring, labor disputes, criminal cases, inheritance and estate disputes, administrative cases, and intellectual property disputes.

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Chanwit Saekow

Attorney-at-Law

Chanwit Saekow (贺子凡) is a dispute resolution lawyer. His practice focuses on all types of dispute resolution works at both domestic courts and international arbitral institutes. The area of disputes spans from investment dispute, construction, international trade, bankruptcy and restructuring, labor, criminal cases, heritage, administrative cases, etc.

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Kittitach Ritteeverakul

Attorney-at-Law

Kittitach Ritteeverakul is a litigation and dispute resolution lawyer with experience advising and representing domestic and international clients in a broad range of contentious matters. His practice focuses on commercial litigation, arbitration, labor, criminal, and intellectual property disputes, with particular experience in complex commercial and corporate conflicts.

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Sirawit Singharaj

Attorney-at-Law

Sirawit Singharaj is a litigation lawyer with extensive experience in high-stakes dispute resolution, complex arbitration, and white-collar criminal matters. He advises and represents both international and domestic clients, with a particular focus on strategically sensitive, high-value commercial disputes and construction-related litigation.

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Thammarin Boonpraparkorn

Associate

Thammarin Boonpraparkorn is a dispute resolution lawyer advising and representing domestic and international clients in a wide range of contentious and commercial matters. His practice covers commercial litigation, arbitration, intellectual property, construction, employment and labor, and criminal matters, with a particular focus on complex commercial and construction disputes.

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Pisanu Thanadolsathien

Associate

A dedicated Registered Patent Agent and former Patent Examiner at the Department of Intellectual Property (DIP), offering over 15 years of end-to-end patent strategic counsel across Thailand and international jurisdictions. Backed by a strong scientific foundation in Biotechnology and Pharmaceutical products and deep-seated expertise in patentability, PCT procedures, and examination practices, he routinely handles complex patentability assessments, claim drafting, PCT national phase entries, and Freedom-to-Operate (FTO) opinions. Furthermore, leveraging his comprehensive mastery of IP law and prosecution frameworks, he has served for several years as an expert lecturer and practical trainer for various official DIP training programs.

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Worada Changtum

Associate

Worada Changtum is an intellectual property practitioner specializing in patent prosecution. With an academic background in chemistry, she applies her technical knowledge to patent matters involving chemical inventions.

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Chanath Khaophaueg

Associate

Chanath Khaophaueg is an Associate at Siam Juris Partners Limited, supporting the firm's intellectual property practice with a focus on trademark and patent matters. His work includes assisting with the preparation and handling of trademark and patent-related matters.

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WHY SIAM JURIS PARTNERS

  • Senior experience

    We are engaged in high-value and sensitive matters where clarity and experience are essential.

  • Strategic approach

    We focus on practical, outcome-driven solutions that align legal strategy with business objectives.

  • Trusted in complex matters

    Our team includes highly experienced lawyers with decades of practice, bringing depth and judgment to every matter.