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Associate

Me Sébastien Gagnon

Me Sébastien Gagnon, a graduate of Université Laval in 2000 and admitted to the Quebec Bar the same year, has been practicing criminal, penal, and administrative law for nearly two decades.

In 2001, Me Gagnon began his career as a Crown prosecutor in Gatineau, specializing primarily in cases of impaired driving, sexual assault, as well as theft and fraud. He was later appointed head of the penal sector, where he deepened his expertise in the field of traffic tickets.

Building on the experience he gained as a Crown prosecutor, Me Gagnon joined the Leblanc Donaldson team in 2006 as a defense attorney, handling criminal, penal, and administrative cases. In 2015, Me Gagnon co-founded CSG Avocats alongside Me Paul Charlebois and Me Michel Swanston, which has since become the largest criminal law firm in the Outaouais region.

Recognized for his skills as a skilled and dedicated litigator, Me Gagnon represents his clients before the Municipal Court, the Quebec Court, on appeal to the Superior Court, as well as before various administrative bodies. Although he handles all types of criminal cases, he is particularly distinguished in cases of impaired driving, dangerous driving, sexual assault, assault, theft, and fraud.

In parallel with his criminal law practice, Me Gagnon has developed notable expertise in handling traffic tickets of all kinds. Whether it involves cases under the Highway Safety Code, the Quebec Construction Commission (CCQ), the Quebec Building Authority (RBQ), the Ministry of Revenue, or the Financial Markets Authority, Me Gagnon meets his clients' expectations with rigor and professionalism.

Coming from a family active in the construction, transportation, and restaurant sectors, Me Gagnon also offers his representation services before the Quebec Transport Commission, the Alcohol, Racing and Gaming Authority, as well as other administrative bodies.

Me Gagnon has also recognized expertise in disciplinary law, having represented numerous professionals (notaries, doctors, architects, real-estate brokers, etc.) prosecuted by their respective professional orders.

Moreover, Me Gagnon is actively involved in the teaching of criminal law. For nearly ten years, he has taught at the École du Barreau and provided training at various conferences and professional development activities. This involvement not only offers an opportunity to enhance his knowledge but also to share it with a wide audience, thus contributing to the advancement of criminal and penal law.

Me Gagnon is distinguished by his transparency, objectivity, perseverance, and rigor. He will offer you insightful and strategic advice during difficult times.

Current and Past Involvements

  • Member of the Outaouais Association of Defense Lawyers
  • Member of the Provincial Defense Lawyers Association
  • Member of the Outaouais Bar
  • Criminal and Penal Law Professor at the École du Barreau
  • Criminal and Penal Law Professor at La Cité Collégiale
  • Mentor in Criminal Law for the Quebec Bar
  • Trainer in Criminal and Penal Law at the AJBO

Distinction

Excellence Award granted by the Quebec Association of Defense Lawyers for his exemplary work in impaired driving cases.
Contact us to obtain an accurate estimate of the costs related to your situation

Our Recent Successes

Over the years, Me Gagnon and his team have achieved remarkable results in defending against drunk driving charges. Here are some examples of our recent successes:

Dismissal of Charges Due to Procedural Error

Through a meticulous analysis of the case, we demonstrated that our client's constitutional rights were violated during the police intervention, leading to the dismissal of the charges.

Complete Acquittal

In a complex case, our team proved that the equipment used to measure blood alcohol levels was possibly defective, resulting in our client's total acquittal.

Sentence Reduction

In several cases, we have succeeded in obtaining significant sentence reductions by demonstrating errors in breathalyzer tests or presenting convincing mitigating circumstances.
These successes reflect our commitment to vigorously defending our clients' rights and exploring all possible avenues to achieve the best outcome.

Advantages of Working with Us

The benefits of doing business with us

  • Meeting with your lawyer from day one
  • Advantageous flat rate
  • Extensive network of technical experts
  • 24 hr emergency line

Advantages of entrusting us with your case

  • Avoid the loss of your driver's license
  • Avoid demerit points
  • Avoid a conviction
  • Avoid a criminal record

Flat rate

  • No surprises
  • Advantageous and competitive rates
  • Based on the mandate
  • Possible payment Agreement

We are here for you, and we look forward to your visit!

Your cases will be handled directly by Me Gagnon and Me Parent, ensuring personalized attention without intermediaries. Administrative follow-up is managed by our assistant, Mrs. Chantal Lefebvre.