Model Rule of Professional Conduct 5.5

Definition

The ethical rule that governs the unauthorized practice of law and the multijurisdictional practice of law. The rule prohibits a lawyer from (a) practicing law in a jurisdiction in violation of the regulation of the legal profession in that jurisdiction, (b) assisting another in practicing law in a jurisdiction in violation of the regulation of the legal profession in that jurisdiction, and (c) establishing an office or holding himself out as being admitted to practice law in a jurisdiction in which he is not admitted. The rule permits a lawyer to temporarily provide legal services in a jurisdiction in which he is not admitted if he is admitted in another jurisdiction, he has not been disbarred or suspended from practice in any jurisdiction, and the legal services (a) are undertaken in association with a lawyer who is admitted to practice in the jurisdiction and who actively participates in the matter; (b) are in or related to a pending or potential proceeding before a tribunal in the jurisdiction, if the lawyer, or a person the lawyer is assisting, is authorized to appear in such proceeding or reasonably expects to be so authorized; or (c) are in or related to a pending or potential arbitration, mediation, or other alternative-resolution proceeding in the jurisdiction.