Article Preamble580 Cases These Principles set forth general rules for international commercial contracts.
They shall be applied when the parties have agreed that their contract be governed by them.
They may be applied when the parties have agreed that their contract be governed by general principles of law, the lex mercatoria or the like.
They may be applied when the parties have not chosen any law to govern their contract.
They may be used to interpret or supplement international uniform law instruments.
They may be used to interpret or supplement domestic law.
They may serve as a model for national and international legislators.

Number

Issue

# Cases

Material scope of application of Principles

1.1

International commercial contracts

1.1.1

Contracts v. unilateral acts

1.1.2

International v. domestic contracts

1.1.3

Commercial v. consumer transactions

Applicability of Principles

2.1

As rules of law governing the contract

2.1.1

Principles applicable if expressly chosen by the parties

2.1.1.1

In disputes before State court

2.1.1.2

In disputes before arbitral tribunal

2.1.2

Principles as expression of the "lex mercatoria" referred to in the contract

2.1.3

Principles as expression of "general principles of law" referred to in the contract

2.1.4

Principles as an expression of lex sportiva

2.1.5

Principles applied in the absence of any choice-of-law clause

2.1.5.1

Principles as "the rules of law [arbitrators]determine to be appropriate"

Country	Date	Court
Arbitral Award	00-00-1995	London Court of Arbitration
Arbitral Award	05-06-1996	ICC International Court of Arbitration, Paris 7375
Arbitral Award	27-09-1996	ICC International Court of Arbitration, Paris 8261
Arbitral Award	00-09-1998	ICC International Court of Arbitration, Lugano 9419
Arbitral Award	00-01-1999	ICC International Court of Arbitration 9875
Arbitral Award	16-04-1999	International Arbitration Court of the Chamber of Commerce and Industry of the Russian Federation
Arbitral Award	00-03-2000	ICC International Court of Arbitration 9875
Arbitral Award	00-00-2001	Arbitration Institute of the Stockholm Chamber of Commerce
Arbitral Award	00-00-2001	ICC International Court of Arbitration 10422
Arbitral Award	25-01-2001	International Arbitration Court of the Chamber of Commerce and Industry of the Russian Federation
Arbitral Award	00-00-2002	ICC International Court of Arbitration 11638
Arbitral Award	00-03-2002	ICC International Court of Arbitration 10385
Arbitral Award	00-00-2003	ICC International Court of Arbitration 11265
Arbitral Award	00-00-2003	ICC International Court of Arbitration 12097
Arbitral Award	00-00-2003	ICC International Court of Arbitration 11926
Arbitral Award	00-00-2004	ICC International Court of Arbitration 13012
Arbitral Award	00-00-2004	ICC International Court of Arbitration 12701
Arbitral Award	29-03-2005	Arbitration Institute of the Stockholm Chamber of Commerce
Arbitral Award	00-00-2006	ICC International Court of Arbitration 13009
Arbitral Award	15-09-2008	ICC International Court of Arbitration 15089
Arbitral Award	30-10-2009	International Arbitration Court of the Chamber of Commerce and Industry of the Russian Federation
Arbitral Award	00-00-2011	ICC International Court of Arbitration 16816
Arbitral Award	06-08-2015	International Arbitration Court of the Chamber of Commerce and Industry of the Russian Federation
Arbitral Award	31-10-2016	China International Economic and Trade Arbitration Commission (CIETAC)
Arbitral Award	13-06-2017	ICC International Court of Arbitration 20731
Arbitral Award	25-05-2020	Ad hoc Arbitration - Preliminary Award
Arbitral Award	28-02-2022	Ad hoc Arbitration
Cases: 27
France	25-02-2020	Cour d'Appel de Paris
Cases: 1
International Centre for Settlement of Investment Disputes (ICSID)	14-01-2010	International Centre for Settlement of Investment Disputes (ICSID)
International Centre for Settlement of Investment Disputes (ICSID)	28-03-2011	International Centre for Settlement of Investment Disputes (ICSID)
Cases: 2
Iranian-U.S. Arbitral Tribunal	02-07-2014	Iranian-U.S. Arbitral Tribunal (Full Tribunal)
Cases: 1
Netherlands	24-04-2009	Hoge Raad
Cases: 1