Article
Who Can Challenge Patent Validity As An “Interested Person” Under Thailand’s Patent Act?
Thailand's Patent Act reserves the right to initiate patent cancellation proceedings exclusively to "interested persons" or the public prosecutor, but the statute does not define who qualifies as an interested person. Through decades of Supreme Court jurisprudence, Thai courts have established that standing requires a direct commercial nexus between the challenger's activities and the patent's exclusive rights—mere regulatory oversight, derivative interests, or preparatory intentions are insufficient.
Tilleke & Gibbins