Yoony advises on a wide range of complex commercial disputes and has acted for clients in the banking, energy, insurance, information technology and telecommunications sectors.  She has particular experience in directors’ duties, large-scale contract and tort disputes and urgent injunctive relief. Yoony has represented clients in civil proceedings and regulatory prosecutions, appearing in mediations, courts and arbitrations.

Prior to joining Gilbert Walker, Yoony was a senior litigation associate at MinterEllisonRuddWatts.


  • LLB (Hons) / BCom (Hons, Accounting, 1st class) (Auckland)

  • LLM (Auckland)

  • Admitted to the Bar in 2014


  • acting for an NZX-listed telecommunication provider in arbitral proceedings against its former contractors for breaches of equitable, contractual and fiduciary duties

  • acting for an energy company in arbitral proceedings regarding liabilities for carbon tax under a gas supply agreement

  • advising a multinational professional services firm in claims involving an IT subcontractor and the New Zealand Government for breaches arising from delivery of a human resources information management system for a government agency

  • acting for a major insurer in arbitral proceedings with its former IT systems provider in relation to the provision of an IT solution

  • acting for a bank and its appointed receivers in relation to the receivership of a rural feed

  • acting as junior counsel for the liquidators of Mainzeal in the High Court proceedings

  • acting for a large retailer in proceedings brought by the Commerce Commission