sentences:  He takes a strong stance, arguing that the duty is an essential to the integrity of the profession and the administration of justice.Loyalty promotes effective legal representation.While the "bright-line rule" stated in "Neil" was "obiter" to the case at hand, in 2007 it became the "ratio" for determining the later SCC case of "Strother v. 3464920 Canada Inc." Although "Strother" was decided in part by a divided Court, the later case of "Canadian National Railway Co. v. McKercher LLP" in 2013, decided by a unanimous Court, clarified Canadian jurisprudence in this field.