Sebastian Reiter is a Partner in the Vienna office and the head of the local Competition & State Aid service line.

Sebastian advises clients on Austrian and European competition law as well as on Austrian Foreign Direct Investment control rules, regulatory matters across various sectors, and on complex disputes in civil litigation and arbitrations.

Sebastian Reiter is a very bright guy.

Sebastian Reiter has extensive experience and his ability to foresee and mitigate potential legal risks have been instrumental in securing favourable outcomes for our clients. His strategic insights and collaborative spirit are greatly appreciated.

Chambers Europe, 2025 / Legal 500, 2025

RECENT ENGAGEMENTS INCLUDE ADVISING*

DISPUTE RESOLUTION

• A LARGE NATURAL GAS EXPORTER on gas price adaptions under ICC Rules
• A US PUBLIC INDUSTRIAL COMPANY in stock-benefit claw-back proceedings against a former manager under US law in Austria
• A CHINESE MEDICAL TECH COMPANY on patent and copyright litigation in Austria
• ON AN ARBITRATION relating to long-term gas contracts in Austria under ICC Rules

FDI SCREENING

• A FOREIGN INVESTOR on the FDI aspects related to the intended multi-million acquisition of an Austrian fertilizer business
• SAP on the Austrian merger control advice related to its EUR 7 billion acquisition of Qualtrics
• A SCADINAVIAN INDUSTRIAL CLIENT on the merger control aspects related to a parallel public takeover battle for corporate control

COMPETITION & STATE AID

• A MAJOR NATURAL GAS EXPORTER against E-CONTROL, the Austrian Energy Regulator; in a successful appeal to the Austrian Supreme Cartel Court in competition law proceedings  
• A US TECH COMPANY on competition law questions at the intersection with copyright law, in particular, rights of press publishers under the Austrian transposition to the EU copyright directive

* Experience prior to joining Kinstellar.

EDUCATION

• 2017: Yale Law School, New Haven, USA, Fulbright Scholarship, LL.M.
• 2017: University of Vienna, Austria, Faculty of Law, Dr. iur.
• 2012: University of Vienna, Austria, Faculty of Law, Mag. iur.

PROFESSIONAL AFFILIATION

Vienna Bar Association

LANGUAGES

German, English