Patent Act Article 29May 1, 2019

Claim of priority

An applicant claiming priority in accordance with the preceding article shall simultaneously make a declaration with respect to the following when filing a patent application:

1. the filing date of the first patent application;
2. the country or member of WTO in which the first patent application was filed; and
3. the application number of the first patent application.

Within sixteen (16) months after the earliest priority date, the applicant shall submit a certified copy of the first patent application issued by the foreign patent authority under the preceding paragraph.

In case of a violation of Subparagraph 1 or Subparagraph 2 of Paragraph 1 or the preceding paragraph, the priority claim shall be deemed not to have been made.

Where an applicant unintentionally fails to claim priority claim at the time of filing, or where the priority claim is deemed not to have been made as prescribed in violation of Subparagraph 1 or Subparagraph 2 of Paragraph 1, the applicant may, within sixteen (16) months after the earliest priority date, apply for reinstatement of priority claim, pay the required fees and undertake actions set forth in Paragraph 1.

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Patent Act Article 28May 1, 2019

Priority claim under WTO membership, etc.

Where an applicant has first applied for a patent in a foreign country, which reciprocally allows ROC nationals to claim patent priority, or with any member of the World Trade Organization (WTO), the applicant may claim priority in respect of an ROC patent application for the same invention if the ROC patent application for the same invention is filed within twelve (12) months after the filing date of the said first patent application.

Where an applicant claims two or more priorities in respect of a patent application, the period referred to in the preceding paragraph shall be on the basis of the earliest priority date.

If a foreign applicant is a citizen of a non-member of the WTO and whose home country does not mutually recognize priority with the ROC, but the applicant has domicile or business establishment in any member of the WTO or in the territory of a reciprocal country, the applicant shall also be entitled to claim priority in accordance with the provisions set forth in Paragraph 1.

For a patent application filed with priority, examination on its patentability shall be based on the priority date.

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