Yes, as discussed in this article, a beneficiary designation can generally be contested, so long as you have legal standing and valid grounds for contesting the beneficiary designation.
Keep in mind that contesting a beneficiary designation can be challenging, since the designated beneficiary could theoretically have depleted, sold, or transferred the asset before you’ve even had the chance to file a lawsuit.
Due to the complexities involved in this process, working with a skilled property dispute attorney is crucial.