1.5 Claims and Defenses is a legal term referring to how a party in a lawsuit might allege a claim or defense. Claims are assertions made by a plaintiff against a defendant, while defenses are assertions made by a defendant against a plaintiff. Claims and defenses are typically specified in the pleadings (complaint and answer) and can include both legal and factual matters. Types of 1.5 Claims and Defenses include breach of contract, fraud, negligence, nuisance, unjust enrichment, estoppel, and more. The type of claim or defense used will depend on the particular facts of the case and what the party is trying to prove.