(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 the former 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 the former
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.