2. In the course of litigation, if the authenticity of the signature is disputed, if the party providing evidence or confirming the signature has an interest in proving the signature, it shall bear the burden of proof. If it is impossible to find out the authenticity of the signature, the person who produces the evidence shall bear the legal responsibility of not producing the evidence. The person who denies the signature does not bear the burden of proof.

Provisions of the Supreme Court on Civil Evidence

Article 5 In a contract dispute case, the party who claims that the contract relationship is established and effective shall bear the burden of proof for the fact that the contract is established and effective; The party who advocates the alteration, dissolution, termination or dissolution of the contractual relationship shall bear the burden of proof for the facts that caused the alteration of the contractual relationship.

In case of disputes arising from the performance of the contract, the party who has the obligation to perform shall bear the burden of proof.

In case of any dispute over agency right, the party claiming agency right shall bear the burden of proof.