A copy can be requested by any person who appears in the document, or by anyone who has a legitimate interest, always providing the necessary documents to justify it.
WILLS
If the testator is alive, only he or his special representative may obtain a copy.
Once the testator has died, anyone named in the will can ask for a copy, always providing the corresponding death and last will certificates; or whoever proves to have legitimate interest with the corresponding documentation.
POWERS OF ATTORNEY
Must be requested by the principal. The one autorizhed to act, also known as the agent, may be able to require a copy only if that specific faculty is mentioned in it.
COMPANIES
The current administrator or proxy are the ones enabled to request it, providing the original power of attorney or designation; or any other person who appeared in the requested document.