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

1,041 Profile Views

Zachary Dooley

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...

Leroy Hegmann-Streich

Feb 05, 2026

Outstanding experience with John Siwiec in Ottawa - truly the best legal team

I didn't think I'd find such a good lawyer in Ontario, but here we are and I am thoroughly impressed. John Siwiec is just awesome and exceeded all my expectations. No complaints at all! They really ta...

Maureen Gutmann

Feb 05, 2026

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

Terry Turcotte

Feb 05, 2026

Five stars for the incredible team at John Siwiec in Ottawa - they are amazing

Really glad I found John Siwiec for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in Ontar...

Arturo Thompson

Feb 05, 2026

Would recommend John Siwiec for sure to anyone in Ottawa needing legal help

I've already told all my friends and family about John Siwiec. If you need Corporate and Commercial Litigation law help in Ontario, they're the ones to see without any doubt. They are local experts wh...