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

Full text
132. A lawyer must collaborate with other lawyers in the interests of clients and the sound administration of justice.
He must therefore avoid any unfair practice or any conduct towards another lawyer which could abuse the other lawyer’s good faith or trust. He must also avoid criticizing, in an unrestrained or unfounded manner, his competence or conduct, the quality of his services or his fees.
O.C. 129-2015, s. 132.