False declarations by the insured in the proposal contract render the insurance contract void under Article 429 of the Commercial Code.

The Tribunal da Relação do Porto upheld the nullity of an insurance contract due to false declarations made by the insured during the proposal phase. The appellant argued for the contract's validity, but the court found that material misrepresentations fundamentally undermine the basis of the agreement. Consequently, the decision was revoked to confirm the contract's invalidity based on the statutory provision regarding false declarations.