Groupe Piette Avocats is a law firm with offices in Granby and Cowansville, Quebec, composed of three lawyers: Leilani Piette, Marie-Ève Prévost and Claudel Vachon. The firm practices civil law, corporate law, family law, criminal law and youth protection law (DPJ), offers bilingual service in French and English, and accepts certain legal aid mandates in family, youth protection and criminal law matters.

Practice areas

Civil Litigation & Dispute Resolution Business & Corporate Law Family Law Criminal Defence Administrative & Regulatory Law Employment & Labour Law Wills, Estates & Trusts Insurance Law Real Estate Law

Good to know

A person using a wheelchairWheelchair accessibleA professional woman in a suit beside a briefcaseWoman-ownedA laptop showing a video callVirtual appointmentsAn office interior with a desk and chairsIn-person services

Fees & payment

Scales of justice and a gavel above a Legal Aid bannerLegal aid

Lawyers 3

Claudel Vachon Avocate Leilani Piette Avocate Marie-Ève Prévost Avocate

This firm’s lawyers at a glance

Called to the bar
2012–2018 · median 11 years in practice 2 of 3 lawyers
Law schools
Université du Québec à Montréal, Université Laval 2 of 3 lawyers
Languages on the roster
English, French

Offices 2

Granby450-994-3939

72, rue Principale, Granby (Québec) J2G 2T4

Cowansville450-994-3939

200, boul. Davignon, Local B, Cowansville (Québec) J2K 1N9

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Listing compiled from the firm’s public website in August 2026. Verify licence status in the Barreau du Québec directory ↗