Pennsylvania Code
Title 204 - JUDICIAL SYSTEM GENERAL PROVISIONS
Part V - PROFESSIONAL ETHICS AND CONDUCT
Subpart A - PROFESSIONAL RESPONSIBILITY
Chapter 81 - RULES OF PROFESSIONAL CONDUCT
Subchapter A - RULES OF PROFESSIONAL CONDUCT
TRANSACTIONS WITH PERSONS OTHER THAN CLIENTS
Rule 4.4 - Respect for Rights of Third Persons

(1) Responsibility to a client requires a lawyer to subordinate the interests of others to those of the client, but that responsibility does not imply that a lawyer may disregard the rights of third persons. It is impractical to catalogue all such rights, but they include legal restrictions on methods of obtaining evidence from third persons and unwarranted intrusions into privileged relationships, such as the client-lawyer relationship.

(2) Paragraph (b) recognizes that lawyers sometimes receive a document, including electronically stored information, that was mistakenly sent or produced by opposing parties or their lawyers. A document, including electronically stored information, is inadvertently sent when it is accidentally transmitted, such as when an email or letter is misaddressed or a document, including electronically stored information, is accidentally included with information that was intentionally transmitted. If a lawyer knows or reasonably should know that such a document, including electronically stored information, was sent inadvertently, then this Rule requires the lawyer to promptly notify the sender in order to permit that person to take protective measures. Whether the lawyer is required to take additional steps, such as returning the document, including electronically stored information, is a matter of law beyond the scope of these Rules, as is the question of whether the privileged status of a document, including electronically stored information, has been waived. Similarly, this Rule does not address the legal duties of a lawyer who receives a document, including electronically stored information, that the lawyer knows or reasonably should know may have been inappropriately obtained by the sending person. For purposes of this Rule, "document, including electronically stored information," includes, in addition to paper documents, email and other forms of electronically stored information, including embedded data (commonly referred to as "metadata"), that is subject to being read or put into readable form. Metadata in electronic documents creates an obligation under this Rule only if the receiving lawyer knows or reasonably should know that the metadata was inadvertently sent to the receiving lawyer.

(3) Some lawyers may choose to return a document or delete electronically stored information unread, for example, when the lawyer learns before receiving it that it was inadvertently sent. Where a lawyer is not required by applicable law to do so, the decision to voluntarily return such a document or delete electronically stored information is a matter of professional judgment ordinarily reserved to the lawyer. See Rules 1.2 and 1.4.