удовлетворить иск(о суде; Скорее, это и "sustain a claim", означает "подтвердить, обосновать иск, пертензию", Например, "the evidence presented sustains the case/the claim for/of a breach of contract". mtovbin)
удовлетворить иск(о суде; ~ something (law) to decide that a claim, etc. is valid Syn: ^uphold • The court sustained his claim that the contract was illegal. • Objection sustained! (= said by a judge when a lawyer makes an ^objection in court). OALD Alexander Demidov)