Enforcement Rules of the Patent Act Article 4

Any document(s) of proof submitted pursuant to the Act and these Enforcement Rules shall be the original or the certified copy thereof.Upon making preliminary showing that the photocopy of the document(s) of proof is identical to the original or the certified copy, except for the certified priority document, the parties involved may submit the photocopy instead. However, where a photocopy of the documentary evidence is submitted as evidence of invalidation, it shall be proved to be identical to the original or the certified copy thereof.When the original or the certified copy of the document(s) of proof has been verified by the Specific Patent Agency, it may be returned to the applicant.