B-1, r. 3.1 - Code of Professional Conduct of Lawyers

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152. Where applicable, a lawyer must ensure that the firm within which he engages in his professional activities uses the symbol of the Barreau only if all the services offered by the firm are professional services rendered by lawyers or, if the firm also offers other professional services, provided the graphic symbol identifying each of the professional orders or organizations to which such persons belong is also used.
However, the graphic symbol of the Barreau may always be used in connection with the name of a lawyer.
O.C. 129-2015, s. 152.