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

1,047 Profile Views

Sally Yundt

Feb 05, 2026

Many thanks to John Siwiec for the hard work and dedication to my legal matter

Super helpful and professional staff at John Siwiec's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support and legal expert...

Pete Kutch

Feb 05, 2026

Excellent legal representation provided by John Siwiec for my Corporate and Commercial Litigation law case

Best lawyer for Corporate and Commercial Litigation law in Ottawa. Period. I've seen others, but John Siwiec is on another level. They truly care about their clients and work hard to get the best resu...

Roland Armstrong

Feb 05, 2026

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

If you're looking for someone who actually cares and will fight for you, go to John Siwiec. They helped me out big time with my Corporate and Commercial Litigation law issue and kept me informed at ev...

Renee Waelchi

Feb 05, 2026

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

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...

Ora Fritsch

Feb 05, 2026

Top notch experts in Ottawa - John Siwiec is by far the best lawyer I've ever had