Dennis P. Langen

Derek Allchurch is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation. Derek, who practices law in Calgary, Alberta, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Derek is held by other top lawyers in the same geographic and legal practice area.

Crispin is the Administrative Partner of the Calgary office and practices in the areas of business law, corporate finance and securities, mergers and acquisitions, and energy. He advises clients on corporate finance, public and private M&A, corporate reorganizations, and governance matters across a range of industries, including oil and gas, oilfield services, mining, power, and manufacturing. Crispin has significant experience with corporate finance and securities transactions, including...

Lindsey Galvin is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Lindsey, who practices law in Calgary, Alberta, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lindsey is held by other top lawyers in the same geographic and legal practice area.

Zafar Jaffer is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Zafar, who practices law in Calgary, Alberta, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Zafar is held by other top lawyers in the same geographic and legal practice area.

Nigel established his first law firm in 1997 and has been practicing law for more than 25 years. He has appeared before all levels of Court throughout Alberta, and is familiar with all forums of Alternative Dispute Resolution. He is committed to maximizing client recovery, minimizing client exposure and realizing optimal outcomes. Nigel proudly considers himself first and foremost an advocate, and this has been his passion and a consistent theme throughout his professional career. He is also ...

Doug is a senior family lawyer who has practiced family law for over 36 years. His practice is largely mediation and arbitration of family law disputes. Often Doug is acting as a mediator/arbitrator in a hybrid process that combines the benefit of both mediation and arbitration. In addition, Doug assists a few select clients in reaching resolution through negotiation, collaborative law, mediation, arbitration, and when necessary through litigation. Admitted to the Alberta Bar on January 10, 1...

Kelly practices energy, commercial and securities litigation. He has extensive experience with claims in the oil & gas, construction, and securities industries. He acts as counsel for investment dealers, investment advisors and investors in securities regulation, investigation and enforcement matters, and other investment related claims. Kelly has argued cases at all levels of court in Alberta, the Tax Court of Canada, securities regulatory tribunals, and the Canadian Investment Regulator...

Roxanne was called to the New Brunswick and Ontario Bars in 2003. She practiced in New Brunswick and then Ontario before settling in Calgary and joining Carbert Waite LLP in 2008. Roxanne became a partner in the firm in 2013. She practices litigation with a focus on employment law, including human rights, privacy, and occupational health & safety matters. Roxanne represents both employers and employees in a wide range of complex employment law matters. Roxanne’s employment practice ...

Regina Corrigan is a partner in the Calgary office of the firm, head of the office's Business Law Department and practice group leader for its Intellectual Property Law Department. Regina's practice focuses on the areas of trademarks and technology commercialization. She has significant experience with all aspects of trademark law, including, prosecution, opposition, licensing and rights transfer in Canada. Regina also holds in-depth expertise in the commercialization and development of techn...

Ken’s practice focuses on tax litigation and tax dispute resolution. With over 30 years as a tax lawyer, he also has extensive experience in corporate tax planning, reorganizations and personal tax planning. Becoming partner at Felesky Flynn in 1996, Ken was co-managing partner from 2008 to 2015 and was appointed King’s Counsel in 2008. He has represented taxpayers before the Supreme Court of Canada, Tax Court of Canada, Federal Court of Appeal, Alberta Court of Queen’s Benc...