Disable/Restrict from copying content from signed adobe esign agreement document

Hi Team,

We are generating a agreement link using an adobe apis(https://secure.na1.echosign.com/public/docs/restapi/v6#!/agreements/createAgreement) and sending the agreement sign link to signers using an email. Once signer opens that document sign url, fills all the required fields and signs an agreement document. After this signer/other paties added in cc will be recieving a copy of completed document which has all data filled by signer and signature of a signer.  We observed that, we can copy a content data/signature from that completed document and paste on word document or somewhere else.  How we can restict to make not allowing the copy paste content from agreement document generated using API https://secure.na1.echosign.com/public/docs/restapi/v6#!/agreements/createAgreement. 

Is the document generated after completing a signature is editable or non-editable at adobe? 

Regards,

Mahesh