/ˈsɪɡnətʃər baɪ ˌprɑksəˈreɪʃən/ – Phrase
Definition: chữ ký thừa ủy quyền.
A more thorough explanation: “Signature by procuration” refers to a signature made on a legal document by an individual who is authorized to sign on behalf of another person or entity. This type of signature is typically used when the signatory is acting as an agent or representative of the principal party, and the signature indicates that the signatory has the authority to act on behalf of the principal.
Example: The contract was signed on behalf of the company by John Smith, with his signature by procuration.