Patent Act Article 4May 1, 2019

Acceptance of foreign application

A patent application filed by a foreign applicant shall not be accepted if the home country of such foreign applicant is not a signatory to an international treaty for protection of patent right to which the Republic of China (ROC) is a signatory, or if the home country does not conclude with the ROC a treaty or an agreement for reciprocal protection of patent rights, or if no patent protection agreement is concluded by and between organizations or institutions of the ROC and said foreign country and approved by the respective competent authorities, or if the laws of said foreign country do not accept patent applications filed by ROC nationals.

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