"Judith Feldner and her team have huge experience in advising on transactions and a very good sense for cooperating with the competition authority. They simply deliver a great work product."
Legal500, 2025
"Judith Feldner is a star: her work ethos, her experience and her antitrust know-how are outstanding. Furthermore, she is a fantastic person to work with."
Legal500, 2025
"Judith Feldner is fantastic - she always delivers and is a great team player."
Chambers Europe, 2025
"Judith Feldner is well known for being dedicated and knowledgeable in antitrust."
Chambers Europe, 2025
"She is very up to date in how to deal with authorities and you can always trust her advice."
Chambers Europe, 2025
"Judith Feldner has a broad competition law practice, assisting clients with obtaining clearance for proposed mergers before the Austrian authorities and representing clients in FCA investigations into alleged cartels. She is also recognised for her experience in FDI filings."
Chambers Europe, 2024
"unkompliziert, schnell und verlässlich"
JUVE, 2024
"She did a deep dive very quickly and came up with a practical solution. I would consider her an asset in competition law."
Chambers Europe, 2024
"She is a great lawyer and adviser. She is always available and on top of legal developments."
Chambers Europe, 2023
Judith Feldner "is not only a legal expert in her field but also digs into the business related questions in order to provide practical advise and solutions."
Legal500, 2022
"Judith Feldner – outstanding effort and engagement."
Legal500, 2022
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Practice Group
Judith Feldner specializes in representing clients in merger control and antitrust proceedings before the European Commission and the Austrian competition authorities. She also represents clients in investment control proceedings. A central part of her practice involves compliance training for businesses and advising on compliance programs.
Judith Feldner studied law at the University of Graz and the Universitat Autònoma de Barcelona.
After graduating, she worked as an assistant at the Institute for European Law at the University of Graz. In 2023, Judith Feldner was the only Austrian to be ranked among the “40 under 40” worldwide in the investment control category by the Global Competition Review.
- Feldner/Handler, Austrian FCA Publishes Updated Standpoint on Settlements: Reduction of the Reduction, Kluwer Competition Law Blog, 23.11.2023
- Feldner/Frommelt/Neuhauser, EuGH-Urteil Xella: Folgen für den Ablauf des österreichischen Investitionskontrollverfahrens, RdW 2023/522
- Feldner/Frommelt, Time out’ for the EU cooperation mechanism in Austria due to Xella (C-106/22), Eulawlive.com, 11.10.2023
- Feldner/Frommelt, Check Out My Gravel Pit – Court of Justice of the European Union On The Scope of The FDI Screening Regulation and Restriction on The Freedom of Establishment, Kluwer Competition Law Blog, 25.07.2023
- Blonska/Feldner, A suggested New Year’s Resolution for the EU Member States still getting around to implementing the EU Whistleblowing Directive: Please include national competition law, Kluwer Competition Law Blog, Kluwer Competition Law Blog, 12.01.2022
- Feldner/Goiser, Whistleblowing als Chance für die Compliance-Kultur an Hochschulen, in Österreichisches Jahrbuch Risikomanagement 2021, 87-98
- Feldner/Bara, (Un)friendly Reminder From the Austrian Cartel Court of How to Allocate Turnover, Kluwer Competition Law Blog, 02.10.2020
- Feldner/Bara, Die Personengleichheit zu 50% als Zusammenschluss – wie anders ist Österreich? NZKart 2020, 74-77
- Feldner/Cavada, Der Leitfaden zur Transaktionswert-Schwelle, ÖZK 2018, 174-179
- Feldner, § 9 Abs 4 KartG – Die praktische Bedeutung des neuen Schwellenwerts, ÖZK 2017, 149-155
- Feldner/Thalhammer, Hausdurchsuchungen durch die BWB und die Bedeutung des Untersuchungsgegenstands, ecolex 2016, S. 892-895
- Feldner/Thalhammer, Die Hausdurchsuchung im Kartellrecht, Manz Verlag Wien, 09/2016
- Thalhammer/Feldner, Chapter: Austria, in The Essentials of Merger Review, American Bar Association (2013)
- Thalhammer/Feldner, EU Competition Law and the Energy Sector 2012, in The European Antitrust Review 2013
- Thalhammer/Feldner, EU Competition Law and the Energy Sector 2011: Time to Switch into Higher Gear, in The European Antitrust Review 2012 – a Global Competition Review special report
- Feldner/Handler, Settlements: Eine Analyse des aktualisierten Standpunkts der BWB, ÖZK 2024, 8
- Handelsblatt Austria “Best Lawyers”, 2025: “Best Lawyer” – Competition / Antitrust
- Legal500, 2025: “Next Generation Partner” – EU & Competition
- Chambers Europe, 2025: Ranked Lawyer – Competition / European Law
- Legal500, 2024: “Next Generation Partner” – EU & Competition
- Chambers Europe, 2024: Ranked Lawyer – Competition / European Law
- JUVE, 2024: “Highly Recommended” – Competition Law / Antitrust
- Handelsblatt Austria “Best Lawyers”, 2024: “Best Lawyer” – Competition / Antitrust
- Global Competition Review, 2023: 40 under 40 in FDI
- Legal500, 2023: “Next Generation Partner” – EU & Competition
- Chambers Europe, 2023: Ranked Lawyer – Competition / European Law
- JUVE, 2023: “Highly Recommended” – Competition Law / Antitrust
- Legal500, 2022: “Next Generation Partner” – EU & Competition
- Chambers Europe, 2022: Ranked Lawyer – Competition / European Law
- JUVE, 2022: “Highly Recommended” – Competition Law / Antitrust
- Legal500, 2021: “Next Generation Partner”; “Recommended” – EU & Competition
- Chambers Europe, 2021: Ranked Lawyer – Competition / European Law
- Legal500, 2020: “Next Generation Partner”; “Recommended” – EU & Competition
- Chambers Europe, 2020: Ranked Lawyer – Competition / European Law
- JUVE, 2020: “Highly Recommended” – Competition Law / Antitrust