18.4 Governing Law. This Agreement shall be governed by the laws of Belgium.
(a) In the event of a dispute arising under this Agreement between the Parties, the Parties shall first refer such dispute to informal dispute resolution discussions between their respective Executive Officers. AstraZeneca, on the one hand, or the Commission, on the other hand on behalf of the Commission or the applicable Participating Member State, may initiate such informal dispute resolution by sending written notice of the dispute to the other Party, and, within twenty (20) days of such notice, the Executive Officers shall meet and attempt to resolve the dispute by good faith negotiations.
(b) Each of the Commission, the Participating Member States and AstraZeneca irrevocably submit to the exclusive jurisdiction of the courts located in Brussels, Belgium to settle any dispute which may arise under or in connection with this Agreement or the legal relationships established by this Agreement.