Loni da Costa

Associée

Calgary
[email protected]
403.232.9696

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Loni has a commercial litigation and dispute resolution practice, having varied experience in handling energy industry disputes, commercial tenancy matters, director shareholder and accounting disputes, securities-related defence and regulatory matters and intellectual property related disputes.

She regularly assists and advises clients on:

  • Commercial tenancy matters;
  • Securities-related regulatory investigations, complaints and litigation;
  • Environmental contamination and pest management regulatory matters;
  • Liquor and gaming regulations;
  • Energy industry disputes;
  • Director Shareholder and accounting disputes;
  • Trademark infringement and opposition proceedings;
  • Patent litigation; and
  • Class actions and appeals

Loni has appeared before all levels of Court in Alberta and the Federal Court, as well as a number of administrative bodies, including:

  • the Alberta Securities Commission (ASC)
  • the Canadian Investment Regulatory Organization (CIRO)
  • the Trademark Opposition Board (TMOB)
  • the Municipal Government Board
  • the Alberta Energy Regulator (AER)
  • the Alberta Liquor, Gaming and Cannabis Commission (AGLC).

Loni fournit des services juridiques par l’intermédiaire d’une société professionnelle.

Experience

Beyond our Walls

Professional Involvement

  • Member, Calgary Bar Association
  • Member, Canadian Bar Association

Community Involvement

  • Children’s Legal & Educational Resource Centre (CLERC)
  • Ambassador and past Board member, Unlocking Potential Foundation

Awards & Recognitions

  • Recognized in the 2025 edition (and since 2022) of The Best Lawyers in Canada® (Corporate and Commercial Litigation) and in the 2025 edition of The Best Lawyers in Canada® (Intellectual Property Law)
  • Recognized in the 2024 edition of Chambers Canada – Canada's Leading Lawyers for Business (Litigation: General Commercial - Alberta).
  • Recognized in the 2024 of Legal 500 Canada as a "Next Generation Partner” (Dispute Resolution).
  • Recognized in the 2024 edition (and since 2020) of Benchmark Litigation Canada as a Future Star.
  • Recognized in the 2024 edition (and since 2020) of Benchmark Litigation Canada in the 40 & Under Hot List.
  • Shortlisted for "Emerging Talent - Alberta Litigator of the Year" at the 2023 Benchmark Litigation Canada Awards
  • Recognized in the 2023 edition (and since 2022) of The Best Lawyers in Canada (Corporate and Commercial Litigation)

Bar Admission & Education

  • Alberta, 2011
  • JD, Université de la Saskatchewan, 2010
  • BA, Université de l'Alberta, 2006