Practice Areas

Public Procurement, State Aid, Public Law

Professional Experience

Research Fellow and lecturer at the University of Applied Sciences Wiener Neustadt; Associate at a renowned Vienna law firm; Partner at KWR


University of Vienna (Mag. iur. 2000, Dr. iur. 2001)


German, English

"Katharina Trettnak-Hahnl advises bidders and contracting authorities on procurement procedures in a range of sectors, including energy, infrastructure and construction. Clients appreciate that she is "very clear about what's possible and what isn't, so you are able to assess all the disadvantages and advantages ofeverything, and she will show the risks of every option." (Chambers Europe 2019)
P +43 1 24500-3265
F +43 1 24500-63159


German, English

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