What Is A 'Breach Of Contract'?

Violation of a contractual obligation by failing to perform one's own promise, by repudiating it, or by interfering with another party's performance. "A breach may be one by non-performance, or by repudiation, or by both. Every breach gives rise to a claim for damages, and may give rise to other remedies. Even if the injured party sustains no pecuniary loss or is unable to show such loss with sufficient certainty, he has at least a claim for nominal damages. If a court chooses to ignore a trifling departure, there is no breach and no claim arises."