Or. State. Bar. R. Regul. and Polic. 1.9

As amended through January 17, 2024
Rule 1.9 - DUTIES TO FORMER CLIENTS
(a) A lawyer who has formerly represented a client in a matter shall not thereafter represent another person in the same or a substantially related matter in which that person's interests are materially adverse to the interests of the former client unless each affected client gives informed consent, confirmed in writing.
(b) A lawyer shall not knowingly represent a person in the same or a substantially related matter in which a firm with which the lawyer formerly was associated had previously represented a client:
(1) whose interests are materially adverse to that person; and
(2) about whom the lawyer had acquired information protected by Rules 1.6 and 1.9(c) that is material to the matter, unless each affected client gives informed consent, confirmed in writing.
(c) A lawyer who has formerly represented a client in a matter or whose present or former firm has formerly represented a client in a matter shall not thereafter:
(1) use information relating to the representation to the disadvantage of the former client except as these Rules would permit or require with respect to a client, or when the information has become generally known; or
(2) reveal information relating to the representation except as these Rules would permit or require with respect to a client.
(d) For purposes of this rule, matters are "substantially related" if (1) the lawyer's representation of the current client will injure or damage the former client in connection with the same transaction or legal dispute in which the lawyer previously represented the former client; or (2) there is a substantial risk that confidential factual information as would normally have been obtained in the prior representation of the former client would materially advance the current client's position in the subsequent matter.

Or. State. Bar. R. Regul. and Polic. 1.9

Adopted 1/1/2005; Amended 12/1/2006: Paragraph (d) added.

Defined Terms (see Rule 1.0):

"Confirmed in writing"

"Informed consent"

"Firm"

"Knowingly"

"Known"

"Matter"

"Reasonable"

"Substantial"

Comparison to Oregon Code

This rule replaces DR 5-105(C), (D) and (H). Like Rule 1.7, this rule is a significant departure from the language and structure of the Oregon Code provisions on conflicts. Paragraph (a) replaces the sometimes confusing reference to "actual or likely conflict" between current and former client with the simpler "interests [that are] materially adverse." The prohibition applies to matters that are the same or "substantially related," which is virtually identical to the Oregon Code standard of "significantly related."

Paragraph (b) replaces the limitation of DR 5-105(H), but is an arguably clearer expression of the prohibition. The new language makes it clear that a lawyer who moves to a new firm is prohibited from being adverse to a client of the lawyer's former firm only if the lawyer has acquired confidential information material to the matter while at the former firm.

Paragraph (c) makes clear that the duty not to use confidential information to the client's disadvantage continues after the conclusion of the representation, except where the information "has become generally known."

Paragraph (d) defines "substantially related." The definition is taken in part from former DR 5-105(D) and in part from Comment [3] to ABA Model Rule 1.9.