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

1,039 Profile Views

Bessie Fisher

Feb 05, 2026

The absolute best in Ottawa for Corporate and Commercial Litigation law - and I mean that from the bottom of my heart

Honestly, I can't thank John Siwiec enough for everything they've done for me. They really know their stuff when it comes to Corporate and Commercial Litigation law and it shows in the results. 10/10...

Jeffrey Dooley

Feb 05, 2026

Great people who truly care at John Siwiec - the best legal team in Ontario

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...

Carol Hartmann

Feb 05, 2026

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

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...

Emmett Morar

Feb 05, 2026

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

Everyone at John Siwiec's office in Ottawa was so nice and helpful. They made a tough situation a lot easier to deal with by being so patient and explaining everything clearly. I never felt like just...

Nelson Becker

Feb 05, 2026

Professional service and clear communication provided by John Siwiec in Ottawa

I've worked with a few lawyers in Ottawa over the years, but John Siwiec stands out for their honesty and thoroughness. They were clear about the process and kept me updated at all times. I felt confi...