2.
Rome I
Regulation (EC) No 593/2008 of the European Parliament and of the Council of 17 June 2008 on the law applicable to contractual obligations (Rome I) · European Union
A contract or an act intended to have legal effect may be proved by any mode of proof recognised by the law of the forum or by any of the laws referred to in Article 11 under which that contract or act is formally valid, provided that such mode of proof can be administered by the forum.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-29 · Text as adopted (Official Journal); later amendments are not incorporated in this text.