Katzman, Wylupek LLP is a personal injury law firm founded in 1990 by Marc Katzman and David Wylupek, with offices in Windsor, Chatham-Kent, and Sarnia, Ontario. The firm represents injury victims in matters such as motor vehicle accidents, slip and fall accidents, dog bites, and disability and insurance claims, and it accepts clients without any upfront payment.

Practice areas

Personal Injury Insurance Law

Good to know

A person using a wheelchairWheelchair accessibleA gold parking sign with a green checkmarkFree parkingA laptop showing a video callVirtual appointmentsA calendar with a checkmark beside a clockBy appointmentAn office interior with a desk and chairsIn-person services

Fees & payment

A shield with gold coins, a dollar sign and a checkmark sealContingencyA clipboard with a speech bubble and a no-charge dollar coinFree consultation

Lawyers 5

Allen D. Blemings Lawyer Personal Injury David Wylupek Founding Partner Personal Injury Marc Katzman Founding Partner Personal Injury Norm Groleau Lawyer Personal InjuryInsurance Law Patrick J. Sonoski Lawyer Personal InjuryInsurance Law

This firm’s lawyers at a glance

Called to the bar
2002–2009 · median 20 years in practice 2 of 5 lawyers
Law schools
University of Windsor (2), University of Western Ontario, University of Windsor and University of Detroit Mercy (joint program) 4 of 5 lawyers

Who handles what

Offices 3

Windsor519-254-4878

1427 Ouellette Ave, Windsor, ON N8X 1K1

Chatham519-355-0000

405 Riverview Drive, Suite 301, Chatham, ON N7M 5J5

Sarnia519-344-4878

201 Front Street North, Suite 410, Sarnia, ON N7T 7T9

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Listing compiled from the firm’s public website in July 2026. Verify licence status in the Law Society of Ontario directory ↗