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Patent Act Section 9 — Excluded subject matter
Patent Act (พระราชบัญญัติสิทธิบัตร) — Section 9.
Plain-English Summary
Five categories of invention are not protected: (1) microorganisms and their naturally occurring parts, animals, plants, and extracts of animals or plants; (2) scientific and mathematical rules and theories; (3) information systems for the operation of computers; (4) methods of diagnosing, treating or curing disease in humans or animals; and (5) inventions contrary to public order, morality, health or public welfare. Whether item (3) reaches software in a particular case is a question of interpretation; the Act's words are 'information systems for the operation of computers'.
Official Text
Official Thai text at the Royal Gazette / Office of the Council of State. Translation summary only.
Consult official sourceParent Statute
Patent Act
พระราชบัญญัติสิทธิบัตร · B.E. 2522 (1979)
The Patent Act B.E. 2522 (1979) governs invention patents, design patents, and petty patents (อนุสิทธิบัตร) in Thailand. The Minister of Commerce administers the Act (Section 4), and the Act's Director-General is the Director-General of the Department of Intellectual Property (DIP) (Section 3). The Patent Board hears appeals against the Director-General's orders, and a party may take a Board decision to the court (Sections 66, 72 and 74).
The summary above is a plain-English educational paraphrase of Section 9 of the Patent Act. It is not an authoritative translation. For the binding Thai text, consult the Royal Gazette or the Office of the Council of State. Educational use only — not a substitute for advice from a Thai-qualified lawyer.
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