Patrick G. Duffy
About Patrick G. Duffy
Patrick G. Duffy is a lawyer based in Toronto, ON and has been recognized in The Best Lawyers in Canada™ since 2019. Patrick G. Duffy is recognized in the following practice areas:
- Toronto, Ontario
- Aboriginal Law / Indigenous Practice
- Construction Law
- Energy Law
- Energy Regulatory Law
- Environmental Law
- Municipal Law
Current Firm: Stikeman Elliott LLP
Location: Toronto, ON
It takes just a few minutes to optimize your profile for clients looking to engage and lawyers who are ready to refer.
Activate your profile and highlight why your peers recognized in Best Lawyers today.
Nearby Lawyers
Aaron Stefan is a Partner in Fasken’s Banking and Finance group with over 20 years of experience advising on corporate/commercial transactions. He regularly advises on syndicated and non-syndicated secured and unsecured credit facilities, acquisition financings, receivables purchases, asset-based lending and private lending. Aaron acts for financial institutions as well as private and public companies in a wide range of industries including energy, mining, manufacturing, agribusiness, t...
Andrew D. Elias is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation. Andrew D., who practices law in Toronto, Ontario, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew D. is held by other top lawyers in the same geographic and legal practice area.
John Kruk’s practice is focused on investment funds and other products and services offered by investment managers. He advises clients on how to set up, market, manage and restructure these products and services. John assists clients with a wide range of investment products and services, whether intended for retail Canadian investors, institutions or anywhere in between. The products range from conventional mutual funds to sophisticated, unique solutions. John also has expertise with le...
Nada Nicola-Howorth is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law, Medical Negligence and Professional Malpractice Law. Nada, who practices law in Toronto, Ontario, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Nada is held by other top lawyers in the same geographic and legal practice area.
Catherine is a Partner in the Construction and Infrastructure Practice Group at Singleton Urquhart Reynolds Vogel LLP. She is a passionate advocate, who focuses on providing business-critical strategic counsel to clients facing complex legal challenges, particularly in complex commercial disputes and construction and infrastructure disputes. Catherine is dedicated to providing excellent client service, and ensuring the advancement of her clients’ interests with a strategic focus on achi...
Michael P. Canning is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation. Michael P., who practices law in Toronto, Ontario, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael P. is held by other top lawyers in the same geographic and legal practice area.
Barry Segal is a tax lawyer in our Toronto office. He has a diverse tax practice that includes public and private M&A, debt restructurings, corporate finance, corporate reorganizations, structuring private equity investments, advising domestic and cross-border investment funds, and international tax planning for Canadian and foreign corporations. Barry also acts as counsel on federal and provincial tax audits and appeals.
Edward Marrocco is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law, Corporate and Commercial Litigation, Criminal Defence and Health Care Law. Edward, who practices law in Toronto, Ontario, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Edward is held by other top lawyers in the same geographic and legal practice area.
Martha was called to the Bar in Ontario in 1991, winning the Silver Medal and the Family Law and Advocacy Prizes. She has practised family law since her call, first in a large Bay Street firm, then at a large specialist boutique, and now with her own firm. Though Martha’s practice focuses on all aspects of family law, she has regularly advocated on behalf of same-sex couples. Martha’s work in M. v. H., Halpern, and the Same Sex Marriage Reference resulted in equal marriage and wid...
PRACTICE OVERVIEW Frank Sperduti is a leading expropriation lawyer, and contributing author to the most comprehensive textbook on expropriation law. He has been engaged as counsel in the largest infrastructure projects within Ontario, by both landowners and all levels of government. Frank is a past president of the Ontario Expropriation Association and has written extensively about issues arising in the context of expropriation. He has acted as counsel and appeared before the Ontario Superior...
Explore and Learn
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Recognizing Legal Leaders: The 2027 Best Lawyers Awards in Australia, Japan and Singapore
by Jamilla Tabbara
Market drivers, diversity trends and the elite practitioners shaping the legal landscape.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Can a Green Card Be Revoked?
by Bryan Driscoll
Revocation requires a legal basis, notice and the chance to respond before status can be taken away.
New Texas Family Laws Transform Navigating Divorce, Custody
by Bryan Driscoll
Reforms are sweeping, philosophically distinct and designed to change the way families operate.
How Far Back Can the IRS Audit You?
by Bryan Driscoll
Clear answers on IRS statutes of limitations, recordkeeping and what to do if you are under review.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.
The 2026 Best Lawyers Awards in Chile, Colombia and Puerto Rico
by Jamilla Tabbara
The region’s most highly regarded lawyers.
Can You File Bankruptcy on Credit Cards
by Bryan Driscoll
Understanding your options for relief from overwhelming debt.