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

1,043 Profile Views

Jordan Zemlak

Feb 05, 2026

Absolutely Great! I couldn't be happier with the service from John Siwiec

John Siwiec is fantastic and very professional. Don't hesitate to hire them if you're in Ontario and need help. They really know their stuff and will go the extra mile to make sure you're taken care o...

Andres Krajcik

Feb 05, 2026

Really helpful and compassionate service from everyone at John Siwiec's firm

Just wanted to say a huge thanks to John Siwiec and the staff. They really went above and beyond for me and my family during a very difficult legal battle. We couldn't have done it without their const...

Alonzo Heathcote

Feb 05, 2026

So happy with the results of my case thanks to the hard work of John Siwiec and staff

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...

Grant Haag

Feb 05, 2026

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

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...

Francis Tromp

Feb 05, 2026

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

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...