The Supreme Court won't stop the class-action certification of a lawsuit against Pella Corp. over a purported defect in one of its windows.

The high court on Tuesday refused to hear an appeal from the window-maker.

The lower courts have certified a class-action lawsuit against Pella. The lawsuit alleges that Pella's aluminum clad wood "Proline" casement windows have a design defect that allows water to seep behind the aluminum cladding. They claim that allows the wood to rot at an accelerated rate, and that Pella committed consumer fraud by not declaring publicly the role that the purported design flaw had in the rot.

But Pella fought the class-action certification, saying consumer fraud claims are inappropriate for class treatment.

U.S. District Judge Timothy Black has approved a previously disclosed $179 million settlement and entered a final judgment in a dispute between AK Steel and retirees at its Butler, Pa., steel plant.

The AK Steel retirees had filed a class-action lawsuit in June 2009 to stop the company from making changes to their health insurance benefits. It had started making retirees pay a portion of their premiums in January 2010.

West Chester-based AK Steel is the largest Dayton-area company, with more than $4 billion in revenue.

Under the terms of the settlement, AK Steel will continue to pay for the benefits through 2014 and also pay $91 million to two trusts to cover future benefits for hourly and salaries retirees.

In return, the company has been relieved of liability for any benefits after 2014, and the lawsuit was dismissed.

The Supreme Court will consider whether to keep alive the largest job discrimination case in U.S. history, a lawsuit against Wal-Mart that grew from a half-dozen women to a class action that could involve billions of dollars for more than a half million female workers.

Wal-Mart is trying to halt the lawsuit, with the backing of many other big companies concerned about rules for class-action cases — those in which people with similar interests increase their leverage by joining in a single claim. Class actions against discount seller Costco and the tobacco industry are among pending claims that the high court’s decision might alter.

The suit against Wal-Mart Stores Inc. contends that women at Wal-Mart and Sam’s Club stores are paid less and promoted less often than men. The case the high court accepted on Monday will not examine whether the claims are true, only whether they can be tried together.

Estimates of the size of the class range from 500,000 to 1.5 million women who work or once worked for Wal-Mart.

Wal-Mart, based in Bentonville, Ark., is appealing a ruling by the 9th U.S. Circuit Court of Appeals in San Francisco that the class-action lawsuit could go to trial.

Tobacco giant Altria Corp., Bank of America Corp., Dole Food Company Inc., General Electric Co., Intel Corp., Pepsico Inc. and United Parcel Service Inc. are among the companies that also called for high court review of the case.

A federal judge in Maine yesterday denied class-action status to four lawsuits accusing Philip Morris USA of misleading smokers about the health risks of light cigarettes.

The ruling by U.S. District Judge John A. Woodcock Jr. concerns lawsuits that were filed in Illinois, Maine, California and Washington, D.C., alleging that Henrico County-based Philip Morris USA marketed light cigarettes as healthier than regular cigarettes in violation of various consumer-protection and false-advertising laws.

The lawsuits are among 15 cases that were consolidated for pre-trial proceedings in federal court. In his ruling, Woodcock said the plaintiffs had not met the requirements for class-action status.

"While the judge has yet to rule on the remaining cases in the multidistrict litigation, we believe this decision should serve as a persuasive authority in denying class certification in those and other similar cases as well," said Murray Garnick, senior vice president and associate general counsel for Philip Morris USA parent company Altria Group Inc.

The federal court ruling in Maine yesterday was in contrast to a decision in a separate lawsuit in New Hampshire state court Monday.

In that case, a superior court judge granted class-action status to a lawsuit against Philip Morris USA over its marketing of light cigarettes. A spokesman for Philip Morris USA said the company will appeal that decision to the New Hampshire Supreme Court.

A class-action lawsuit contends that Citizens Property Insurance Corp. improperly awarded dozens of no-bid contracts worth more than $49 million.

The lawsuit filed Thursday in Tallahassee seeks unspecified damages for the 1.2 million Citizens policyholders. The attorney who filed the complaint says the alleged mismanagement costs policyholders in higher rates.

Citizens is supposed to take competitive bids for all contracts above $25,000, except in emergencies or when there is one vendor. The lawsuit says 33 contracts since 2004 have violated those rules.

A Citizens statement said all 33 contracts in question were properly awarded.

The U.S. District Court for the Northern District of California has dismissed a class action suit against NVIDIA that accused the company of trying to hide its knowledge of defects in a line of graphics chips, in order to keep the stock price up.

In a strongly-worded opinion, Judge Richard Seeborg said the plaintiffs did not establish that there was any evidence that the company knew that its chips were defective. Further, the opinion notes that some of the evidence presented by witnesses was from people who did not work at the company and were not in a position to know if the chips were defective or not.

Judge Seeborg gave the plaintiffs 30 days to file an amended complaint, or have it dismissed and the plaintiffs barred from re-filing another suit.

The original lawsuit was filed in 2008, by Lisa Miller, and the class action suit eventually included two union pension funds and the retirement fund of the city of Pontiac, Mich. The suit covered those who bought NVIDIA's stock between Nov.2, 2007 and July 2, 2008.