Ms. Killoran is the former managing partner of Osler Calgary (2011–2017), the first woman to lead a national law firm in Alberta, and a trusted advisor to many major commercial clients. Her litigation practice is devoted to complex and high stakes commercial and resource industry disputes, including pipeline, infrastructure, hydroelectric, oil sands, midstream, upstream and downstream matters. She is a seasoned trial and appeal lawyer with extensive experience in arbitration and mediated disputes. A significant portion of Maureen’s practice involves the defence of high profile challenges to major resource and infrastructure projects across the country. She routinely appears on matters of judicial review/appeal on environmental, administrative, Constitutional, Charter and Aboriginal claims in Federal and Provincial Courts across the country.