The gender bias law suit before the US Supreme Court was simply called WAL-MART STORES, INC. v. DUKES ET AL. 

A million and a half women pressed a Class Action suit against America’s largest retailer, Walmart for discriminating against women employees violating the 1964 Civil Rights Act.

In Monday’s action, SCOTUS threw out the case, the largest employment discrimination suit in US history.

The finding handed down by the Justices read: “They claim that local managers exercise their discretion over pay and promotions disproportionately in favor of men, which has an unlawful disparate impact on female employees; and that Wal-Mart’s refusal to cabin its managers’ authority amounts to disparate treatment.”

The Justices ruled against the petitioners, saying the lawyers representing the women did not sue under the correct rules of the Class Action law.

In writing for the majority, Justice Antonin Scalia stated: The plaintiffs needed to show "significant proof that Wal-Mart operated under a general policy of discrimination. That is entirely absent here."

The ruling is a blow, not only to Walmart employees involved in the action, but to fair pay advocates who have been watching the case very closely.

Read more:

The New York Times 

CNN