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Lynne Kassie, Ad. E.

Telephone : (514) 393-4019

Fax : (514) 878-1865

Email : lkassie@rsslex.com


Lynne Kassie is head of RSS’s Family Law Department. She has outstanding experience with all aspects of matrimonial and family law, as well as in related fields of civil law, including succession and protective supervision.

Ms. Kassie focuses her practice on complex litigation, and on cases involving high-net-worth issues, division of property and other financial issues related to business interests and trusts.

Ms. Kassie also advises parties prior to their marriage or cohabitation and has extensive experience in the preparation of prenuptial agreements and marriage contracts.

She has considerable skills in negotiation and mediation proceedings and appears regularly before the Superior Court and Court of Appeal. She has also appeared before the Federal Court and the Supreme Court of Canada on several occasions.


Fellow, American College of Trial Lawyers, 1998; President of the Quebec Province Committee, 2003–2004

Lawyer Emeritus, Quebec Bar, 2007

Lexpert — Rated as a leading family law practitioner for several years

Best Lawyers —  Rated as a leading family law practitioner, appearing since 2006; Montréal Lawyer of the Year in Family Law, 2021, 2016 and 2009

Rated “AV Preeminent” by Martindale-Hubbell, for ethical standards and legal ability


Montreal Bar: Conference of Former Bâtonniers; Bâtonnière (President), 1999–2000

Quebec Bar: President, Comité de la journée du Barreau, 1988–1990; Director, (1999–2001); served on several committees

Canadian Bar Association: served on several committees

Lord Reading Society: President, 1989–1990

Quebec Bar Foundation: Governor Emeritus

Éducaloi: Director, 2007–2008

Publications and Conferences

Ms. Kassie is a sought-after speaker and writer, whose recent communications include:

“Can we Trust the Trust? Revisiting the Consequences”, conference before the Jewish Community Foundation of Montréal, June 2014

“La saisie avant jugement de biens en fiducie dans le cadre d’une action en divorce” (Seizure before judgment in divorce proceedings), Canadian Bar Association luncheon, November 2012

“Les faits sur l’union de fait: l’affaire Éric c. Lola” (The facts on common-law relationships: the Eric v. Lola case, with Benjamin Prud’homme), annual conference of the Association de planification fiscale et financière, October 2012

Community Involvement

A lifelong Montrealer, Ms. Kassie has deep roots in her community, as evidenced by many of the positions she held:

Jewish Rehabilitation Hospital: President, 1988–1990

Combined Jewish Appeal: Director, 2002–2006; President, Elan Division, 1988–1990

Jewish General Hospital: Director, 2001–2007

McGill University Alumni Association: Former Director and Secretary of the Executive Committee


English, French


Bachelor of Civil Law, University of Montréal, 1975

Bachelor of Arts, McGill University, 1972

Call to Bar

Quebec, 1976