Ruling of the Supreme Court of Hungary (Magyar Köztársaság Legfelsőbb Bíróság) Ref. No. (in two aggregated cases) Gfv. XI.30.016/2008 delivered in 2009

Rationes Decidendi:

It is not necessary that all the parties to arbitration take part in proceedings on the annulment of an arbitral award.
Proceedings on the annulment of an arbitral award may not include the examination of new evidence that has become available only after the delivery of the arbitral award.
An arbitral award that is contrary to the law does not automatically means a violation of public policy (ordre public). Public policy is violated only by an arbitral award that violates fundamental rights or fundamental society interests protected by law.
An arbitration clause agreed for rights set out in an agreement (in this case, a share sale and purchase agreement) also applies to disputes related to the termination of the agreement.