Signing Requirements
Pennsylvania law requires living wills to be signed by two witnesses over 18.[1]
A witness cannot be the principal’s signing agent or healthcare provider (or their agent).
Revocation
A living will can be revoked by the principal in any manner, regardless of their condition.[2] The revocation takes effect once their healthcare provider is notified.
A medical power of attorney can only be revoked by a principal of sound mind by executing a written revocation or informing their healthcare provider.[3]