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

1,048 Profile Views

Bryan Aufderhar

Feb 05, 2026

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

If you need a Corporate and Commercial Litigation law lawyer, John Siwiec is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of...

Gerardo Quitzon

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...