The Delaware Court of Chancery has dismissed a lawsuit by former stockholders of Paramount Gold and Silver Corp., who had tried to sidestep the court's high bar for post-closing merger challenges.

The ruling, issued Thursday by Chancellor Andre G. Bouchard, was the latest to invoke the board-friendly business judgment rule under the state Supreme Court's 2015 holding in Corwin v. KKR Financial Holdings. Under that standard, directors are generally protected from lawsuits, so long as a transaction had been approved by a majority of uncoerced, fully informed and disinterested stockholders.

In the case In re Paramount Gold and Silver, however, the plaintiffs attempted an end-run around what has proved to be a formidable obstacle in the early stages of stockholder litigation.