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    Educational Information Only

    The content on this page is for general educational purposes and does not constitute legal advice. Every legal situation is unique. For matters involving investigation, arrest, litigation, or formal proceedings, consult a qualified legal professional.

    Competition & Antitrust

    Appeals in Competition & Antitrust Cases

    How to appeal competition & antitrust decisions, grounds for appeal, timelines, and success rates in appellate proceedings.

    Last updated: February 2026

    The Appeal Process

    1

    Court of First Instance

    Initial trial court where cases are first heard. Decisions may be appealed.

    2

    Court of Appeal

    Reviews decisions from Courts of First Instance. Examines both facts and law.

    3

    Supreme Court (Dika)

    Final appellate court. Generally limited to questions of law. Leave may be required.

    Grounds for Appeal

    Errors of Law

    Misinterpretation or misapplication of legal principles, statutes, or precedent.

    Errors of Fact

    Findings unsupported by evidence or clearly erroneous factual conclusions.

    Procedural Errors

    Violations of procedural rules that affected the fairness of proceedings.

    Excessive Sentence

    Sentence disproportionate to the offence or outside statutory guidelines.

    Appeal Timelines

    Critical Deadlines

    • 30 days: Standard deadline to file notice of appeal from Court of First Instance.
    • 1 month: Deadline to file appeal brief after notice of appeal.
    • Varies: Supreme Court appeals have specific requirements and deadlines.

    Missing appeal deadlines typically results in loss of appeal rights. Consult counsel immediately.

    More Competition & Antitrust Topics

    When Legal Representation Matters

    If you need assistance with competition & antitrust matters in Thailand, professional legal advice can help protect your interests.

    Anglo Siam Legal provides experienced legal services across Thailand for both Thai nationals and foreigners.

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