We stand by your side when your future is on the line.
Protect your reputation, defend your freedom, and regain control of your life.
Sexual assault charges can be devastating, carrying potential outcomes such as imprisonment, mandatory sex offender registration, and a permanent criminal record that follows you for life. Even if it’s your first charge, the impact on employment, family relationships, and your reputation can be severe.
At Mass Tsang LLP, our Oshawa-based criminal defence lawyers focus exclusively on defending clients in cases like yours. The sooner you involve us, the greater the chances of securing a reduced sentence, acquittal, or even a full dismissal.
Jeff Mass was born and raised in Montreal, Quebec. Coming from a family of judges and lawyers it was only a natural fit that his chosen profession was the practice of law.
Robbie was born and raised in Toronto, Ontario. In 2000 he graduated from the University of Toronto with a Bachelor of Science while studying human biology and actuarial science.
Heather Spence graduated from Wilfrid Laurier University in 2006 with an Honours Political Science degree and a Business Administration minor. Heather graduated Osgoode Hall Law School where she received a Juris Doctor in Law.
Brian Brody was born and raised in Chicago, Illinois and has always been interested in social equality. Coming from a family of lawyers it was easy for him to choose the practice of law.
Alexei Zaitsev earned his law degree at the University of Windsor, with a heavy focus on criminal law. In his position with Mass Tsang LLP, Alexei practices exclusively in the area of criminal and quasi-criminal defence, as well as defending dog owners charged with offences under
Evan Sinclair studied law at the University of Windsor and the University of Detroit Mercy, receiving American and Canadian law degrees. Evan’s passion for criminal law was solidified after spending a semester as a student attorney working for the Detroit Mercy Criminal Legal Clinic.
Ruaridh McCartney is an Associate at Mass Tsang LLP. Ruaridh graduated from the University of Western Ontario in 2019 (Honours BA with a Specialization in Political Science). From 2019-2021 he attended the University of Southampton in the United Kingdom and graduated Juris Doctor in law in 2021.
Sehar Qureshi is an Associate at Mass Tsang LLP. Born and raised in Scarborough, she graduated from the University of Toronto (Scarborough) in 2017, with an Honours Bachelor of Science in Neuroscience and Psychology. She then attended the University of Windsor where she received a Juris Doctor in Law in 2022.
Stephanie was born in Hong Kong. She graduated from University of Toronto with an Honours Bachelor of Arts Degree majoring in Sociology and Book & Media Studies. In addition to her years of experience in operations management, legal administration, and customer service, she is also a certified interpreter for Cantonese and is fluent in Mandarin as well.
Lydia was born and raised in Toronto, Ontario. She graduated from the University of Toronto in 2017 with a Bachelor of Arts in political science, English, and history. Lydia has been working at Mass Tsang since 2018.
Thousands of clients across Ontario have had charges withdrawn or reduced thanks to our work.
Our firm practices exclusively in criminal defence, giving us the expertise needed for sexual assault cases.
Our six-lawyer team brings decades of courtroom experience and trial strategy.
We offer evening, weekend, and urgent appointments to support you when it matters most.
No hidden costs — just clear, upfront pricing and payment options.
Our strong record reflects our dedication to achieving the best outcomes possible.
Most sexual assault cases in Oshawa resolve within 12–24 months, depending on complexity.
We are consistently rated highly by our clients for professionalism and results.
Your privacy is our priority — all details remain 100% confidential.
Our Oshawa defence team will listen to your story, answer your questions, and explain your options in plain language — all in complete confidence.
Sexual assault is defined as any unwanted sexual contact or attempt to interfere with another person’s sexual integrity. To qualify, three elements typically must exist:
This includes physical, psychological, or implied threats.
The act occurs in a sexual nature, as shown through actions, words, or intent.
Consent must be freely given and legally valid.
| Type of Sexual Assault Charge | Minimum Sentence (First Offence) | Minimum Sentence (Subsequent Offences) | Maximum Sentence |
| Sexual assault (level 1) | None | None | 10 years |
| Sexual assault causing bodily harm | None | 14 years | 14 years |
| Sexual assault with a firearm | 5 years | 7 years | Life imprisonment |
| Sexual assault causing bodily harm with possession of a firearm | 4 years | 14 years | Life imprisonment |
| Sexual assault with a restricted or prohibited firearm | 5 years | 7 years | Life imprisonment |
| Aggravated sexual assault (level 3) | None | Life imprisonment | Life imprisonment |
| Aggravated sexual assault with a firearm | 5 years | Life imprisonment | Life imprisonment |
| Aggravated sexual assault with possession of another firearm | 4 years | Life imprisonment | Life imprisonment |
| Sexual assault without bodily harm | None | None | 10 years |
| Sexual assault of a minor under 16 | None | None | 14 years |
| Sexual interference | None | None | 14 years |
| Invitation to sexual touching (minor under 16) | None | None | 10 years |
| Sexual exploitation (person in position of trust/authority) | None | None | 14 years |
Covers non-consensual touching or minor harm.
Includes use of weapons, threats, or causing bodily harm.
Aggravated cases involving disfigurement, life endangerment, or serious harm.
We carefully review all aspects of your case, including context, timing, and surrounding events, to identify inconsistencies or factors that may strengthen your defence.
Our team investigates and gathers evidence to show that you were not present at the scene or could not have committed the alleged act.
We challenge the reliability of witness identification and scrutinize forensic evidence to ensure the correct person is being held accountable.
If sexual activity did not occur, we collect and present evidence that directly contradicts the allegations.
We provide proof that any sexual activity, if it occurred, was consensual and legally valid, helping to mitigate potential charges.
We argue that the accused reasonably believed consent was given, within the limits defined by Canadian law.
We pursue plea deals, peace bonds, or alternative sentencing where possible.
If a conviction occurs, we pursue reduced sentencing, alternative penalties, or the possibility of removing you from the sex offender registry.
Every consultation, case detail, and client interaction is strictly confidential. Protecting your dignity, privacy, and reputation is our absolute priority.
Do not speak to the police without a lawyer. Call a defence lawyer immediately, gather all relevant information, and avoid discussing your case with anyone else.
Sometimes, in minor cases, alternatives like probation or community service may apply. Aggravated charges almost always include prison time.
Yes — sexual assault convictions usually result in permanent records, affecting employment, travel, and professional licensing.
Most cases resolve within 12–24 months, though complex cases may take longer.
Look for:
Depending on the severity, it can range from probation to life imprisonment. A conviction may also mean a permanent criminal record and mandatory sex offender registration.
By analyzing evidence, building a defence strategy, negotiating plea deals, protecting your rights, and working to minimize penalties.
We challenge credibility, identify inconsistencies, and present exonerating evidence to fight false accusations.
Yes, if the evidence is weak or unreliable. Your lawyer may negotiate with the Crown or seek dismissal.
