Patent Act Article 127May 1, 2019

Application and restriction of derivative design patent "For two or more similar designs owned by the same person, applications may be filed for a design patent and its derivative design patent(s). "The filing date of a patent application for derivative design shall not be earlier than the filing date of the original patent application for design. "A patent application for derivative design filed after the publication of the original design patent is not acceptable. "An applicant shall not file a patent application for derivative design patent if the design therein is only similar to another derivative design patent but not to the original design patent.

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