Omnia praesumuntur contra proferentem

“Omnia praesumuntur contra proferentem” is a Latin legal maxim that means everything is presumed against the one who brings it forward. This principle is usually applied in legal contexts to place the burden of proof on the party making a claim or asserting a particular fact.

In simpler terms, if someone makes an assertion or claim in a legal dispute, it is generally their responsibility to provide evidence to support their claim. If they fail to provide sufficient evidence, the presumption will be against them, and their claim may not be accepted by the court or other relevant authority.

This principle is part of the broader concept of the burden of proof in legal proceedings, where the party making an assertion or claim is typically required to provide evidence to support that assertion. If they cannot meet this burden, the opposing party may prevail in the case.