John Carlo Mastrangelo

Select Representative Mandates

• Canada (Commissioner of Competition) v. Rogers Communications Inc., 2023 FCA 16

  Successfully represented Rogers at trial and in Federal Court of Appeal in defence of Commissioner of Competition application to block $26 billion dollar merger between Rogers and Shaw.

• R. v. City of Greater Sudbury (City), 2023 SCC 28

  Applicability of vicarious liability provisions of Occupational Health and Safety Act to project owners.

• Representing Independent Internet Service Providers in Response to Appeal of CRTC Order Reducing Internet Prices

  Acting for the CNOC in responding to two appeals brought by large telephone and cable companies from a CRTC decision which lowered the rates for wholesale high-speed internet access.

• Precedent-setting constitutional challenge of law in returning Greenbelt lands

  Counsel to large landowner in proceedings against the Ontario government regarding the inclusion of land inside the Greenbelt.

• Ottawa (City) v. ClubLink Corporation ULC, 2025 ONCA 34

  Successful in striking down a contract between a landowner and the City of Ottawa that restrict urban development on Kanata lands, and require the continued operation of a golf course on those lands.

• Responding to an Application by the Commissioner of Competition for Alleged Misleading Advertising by Rogers

  Acting for Rogers in responding to an application by the Commissioner of Competition for alleged misleading advertising by Rogers in relation to its unlimited wireless data plans.

• Counsel to an Investment Management Firm in Defence of a Claim Seeking Damages of $1.8 billion

  Counsel to a Canadian investment management firm in defence of a claim related to investment strategies for $1.8 billion

• MBL Administrative Agent II LLC et al. v. Trade X Group of Companies Inc. et al., 2024 ONSC 3734

  Successfully defended an a court-appointed receiver in resisting a stay application for the inadvertent access of purportedly privileged communications.

• Intermarket CAM Limited v. Ursula Weiss et al.

  Counsel to applicant in a successful unjust enrichment application against property vendors in an agreement of purchase and sale for lands in Cambridge, Ontario.

• Don Anderson Haulage Limited v. Siemens Gamesa Renewable Energy Limited et al.

  Counsel to a defendant to a breach of contract claim brought by a contractor in connection with a transportation services agreement. The claim relates to the Amherst Island Wind Project.