1. An Arbitrator‘s Power To Decide ex aquo et bono A Sleeping Beauty?
Austrian/Polish Twin Conference Martin Platte

2. Austrian/Polish Twin Conference Martin Platte
ex aequo et bono: according to what is just and good
aequitas: equity, fairness, natural justice
aequitas vs summum ius („strict law“)
amiable compositeur
Austrian/Polish Twin Conference Martin Platte

3. Austrian/Polish Twin Conference Martin Platte
Commercial Arbitration
European Convention
Model Law
National Laws
Arbitration Rules
Public Int‘l Law / Investment arbitration
ICJ
ICSID
Austrian/Polish Twin Conference Martin Platte

4. Austrian/Polish Twin Conference Martin Platte
ex aequo et bono vs amiable compositeur
authority to decide detached from legal rules
authority to mitigate inequitable effects of law
meaningful or artificial distinction?
method vs result
Austrian/Polish Twin Conference Martin Platte

5. Austrian/Polish Twin Conference Martin Platte
only possible with express consent of parties
intent of parties
not: lex mercatoria
choice of lex mercatoria ≠ ex aequo et bono
Austrian/Polish Twin Conference Martin Platte

6. Austrian/Polish Twin Conference Martin Platte
Limitations of power to decide ex aequo et bono
international public policy
public policy of seat of arbitration / place of enforcement
decisions regarding jurisdiction
procedural rules
mandatory rules (?)
contract adaptation (?)
award must be reasoned
relevant facts must be established
Austrian/Polish Twin Conference Martin Platte

7. Austrian/Polish Twin Conference Martin Platte
Examples of decisions ex aequo et bono
time-barred claims
notice periods
penalty clauses
rules of evidence
quantum of damages
Austrian/Polish Twin Conference Martin Platte

8. Thank you for your attention!
Austrian/Polish Twin Conference Martin Platte