John Siwiec

4.6 (37 reviews )

Ottawa Ontario Canada

Corporate and Commercial Litigation Intellectual Property Law

Recognized in Best Attorney USA since 2024

613-238-2022 Website

About John

John Siwiec is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Intellectual Property Law.John, who practices law in Ottawa, Ontario, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John is held by other top lawyers in the same geographic and legal practice area.

John Siwiec is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Intellectual Property Law.

John, who practices law in Ottawa, Ontario, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Corporate and Commercial Litigation

Intellectual Property Law

Awards & Recognition

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Reviews

4.6 / 5

37 Reviews

1,040 Profile Views

Vicki Nitzsche

Feb 05, 2026

John Siwiec did a great job handling my complex Corporate and Commercial Litigation law case from start to finish

It's hard finding a reliable lawyer these days, but John Siwiec in Ottawa is definitely one of the good ones. Would use them again if needed without hesitation. They are professional, responsive, and...

Josephine Trantow

Feb 05, 2026

John Siwiec did a great job handling my complex Corporate and Commercial Litigation law case from start to finish

I appreciate how John Siwiec handled my case. No fluff, just straight to the point and very effective representation for my Corporate and Commercial Litigation law matter. They are obviously very expe...

Emmett Schmeler

Feb 05, 2026

So glad I called John Siwiec to handle my Corporate and Commercial Litigation law case in Ottawa

I wasn't sure who to call for my Corporate and Commercial Litigation law problem, but I'm so glad I went with John Siwiec. They really listened to me and understood my situation. It was such a relief...

Casey Bernier

Feb 05, 2026

Reliable lawyer you can count on - John Siwiec provided excellent service throughout

Needed help with Corporate and Commercial Litigation law and John Siwiec delivered on their promises. They're professional, efficient, and easy to talk to. Good choice for anyone in Ontario looking fo...

Steven Lakin

Feb 05, 2026

Highly recommend John Siwiec for anyone needing expert Corporate and Commercial Litigation law help in Ontario

Short and sweet: John Siwiec is the real deal and a true professional in the field of Corporate and Commercial Litigation law. If you're in Ottawa and need help with your legal issues, call them immed...