Deirdre A. Sheehan
About Deirdre A. Sheehan
Deirdre A. Sheehan is a lawyer based in Calgary, AB and has been recognized in The Best Lawyers in Canada™ since 2025. Deirdre A. Sheehan is recognized in the following practice area:
- Calgary, Alberta
- Corporate and Commercial Litigation
Current Firm: Osler, Hoskin & Harcourt LLP
Location: Calgary, AB
It takes just a few minutes to optimize your profile for prospective clients and lawyers ready to refer.
Log in to your account or continue as a guest to view annual subscription pricing.
Nearby Lawyers
Patricia’s practice focuses on insurance litigation, specializing in general insurance defence, property loss/construction claims, personal injury, professional liability, product liability, occupiers’ liability, commercial host liability, medical malpractice, life and disability and coverage disputes. Patricia has appeared at all levels of Court in Alberta, written submissions to the Supreme Court of Canada and regularly represents clients at mediations and other forms of alterna...
Alison Gray, KC is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law, Construction Law and Corporate and Commercial Litigation. Alison, who practices law in Calgary, Alberta, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alison is held by other top lawyers in the same geographic and legal practice area.
Justin Ferrara’s main practice is in securities law, with a focus on mergers and acquisitions and corporate finance. Mr. Ferrara has represented a number of both publicly traded and privately held clients in a broad range of matters, including mergers and acquisitions, public and private equity financings, corporate reorganizations and corporate governance issues. Mr. Ferrara has also advised special committees regarding numerous types of strategic and related-party transactions.
Kirk Litvenenko's core practice areas include: corporate governance, mergers and acquisitions, recapitalization and reorganization transactions and public and private offerings of debt and equity. Kirk is focused on providing elite client service. Kirk builds high-performance internal working teams that are specifically designed to collaboratively service each client's specific and unique needs. Excellent service builds client loyalty and strong relationships, as such, many of the clients for...
Family Lawyer for 30+ years. Mediator for 25+ years. Arbitrator and parenting coordinator for 15+ years. Current Co-Chair of the Alberta Family Lawyers Association; Past President for the Canadian Bar Association (CBA) Alberta Branch; Past National Chair for the Family Law Section of the CBA; Background in psychology and corporate litigation.
Katherine Rubin is Counsel in Fasken’s Knowledge and Practice Innovation department, and works with the Banking and Finance group across the Firm. In this role, Katherine assists the Banking and Finance group by creating and locating resources and content to ensure the efficient and consistent delivery of high quality legal services, and by maximizing the group’s shared intellectual capital. Katherine has a broad range of experience in banking and finance law, and has represented ...
John is a partner at Felesky Flynn in Calgary, Alberta. He focuses on corporate and international tax planning and frequently assists clients in dispute matters. John holds dual qualifications as a lawyer and CPA in Alberta and previously served as a tax practitioner in Australia for many years. He graduated with honours from the University of Melbourne with a double degree in Law and Commerce and currently teaches tax law at the University of Calgary. Before joining Felesky Flynn, John pract...
David Eeles has over 15 years’ experience representing project developers, sponsors, industrial hosts and other project participants in connection with the acquisition, development, construction, financing, operation, restructuring and disposition of energy, infrastructure and industrial projects, including renewable energy projects, power plants, cogeneration plants, heavy oil upgraders and public-private partnership projects. Mr. Eeles has acted as the lead lawyer on a number of such ...
Robert Froehlich currently leads the business law group in our Calgary office and from 2016 to 2020 led our Canadian oil and gas practice. Robert advises domestic and international clients on a diverse range of corporate and commercial matters, with a specific focus on the energy industry. He provides practical and strategic advice to clients on transactions and projects across the energy sector, including on liquefied natural gas, conventional and unconventional upstream petroleum and natura...
Explore and Learn
What AI Visibility Means for Lawyers
by Josh Rupall and Bryan Driscoll
AI tools increasingly interpret lawyers public information. Clear, consistent and credible sources help ensure they describe legal expertise accurately.
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.
Musk v. Altman: The Lawyers Behind the Case
by Jamilla Tabbara
Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.
Can You Go to Jail at an Arraignment?
by Bryan Driscoll
Understanding What Happens at Your First Court Appearance.
Announcing the 2027 Best Lawyers Awards: Austria, Germany and Switzerland
by Jamilla Tabbara
Celebrating the legal professionals throughout Central Europe.
The Legal Teams Behind the Blake Lively–Justin Baldoni Settlement
by Grace Greer
A closer look at the legal teams and attorneys involved in the Blake Lively–Justin Baldoni litigation and its resolution.
The Best Lawyers in France 2027: Peer-Reviewed Excellence
by Jamilla Tabbara
Seventeen editions of peer trust, a growing profession and a dynamic legal market.
What Disqualifies You From Filing Bankruptcies
by Bryan Driscoll
A guide to navigating eligibility, the means test and the legal hurdles of declaring bankruptcy.