Europe

Article 2.106 (ex art. 5.106 B) - Written Modification only 84

1. A clause in a written contract requiring any modification or ending by agreement to be made in writing establishes only a presumption that an agreement to modify or end the contract is not intended to be legally binding unless it is in writing. 85

2. A party may by its statements or conduct be precluded from asserting such a clause to the extent that the other party has reasonably relied on them. 86