This was the result of a patent challenge by generic manufacturer Barr Laboratories, Bayer said in a statement.

"Bayer disagrees with the court's decision and will consider its legal options in this regard," the company added.

Bayer Schering's contraceptive drug Yasmin has annual sales of more than one billion euros. Sales of Yasmin in the United States came in at 321 million euros ($486.9 million) last year, it said.

The dispute stems from several suits against Warner-Lambert over its diabetes drug Rezulin. Warner-Lambert is now owned by Pfizer. The Supreme Court split 4-4 in the case, with Chief Justice John Roberts not participating.

The users of the drug are relying on a Michigan law to allege that the pharmaceutical company engaged in fraud by misleading federal regulators to get the drug approved. The Michigan law shields pharmaceutical companies from product liability lawsuits, unless they committed fraud.

At issue in the case is whether that fraud exception, which allows lawsuits to proceed, is pre-empted by federal regulation of the pharmaceutical industry.

The 2nd U.S. Circuit Court of Appeals in New York ruled that the exception to the Michigan law was not pre-empted by federal regulations, enabling the plaintiffs to pursue the case.

Twenty-seven Michigan residents say they suffered personal injuries caused by Rezulin, a drug that federal regulators approved despite risks to the liver and cardiovascular system.

B. Lawrence Theis has been elected chairman of the executive committee at Denver law firm Holme Roberts & Owen LLP, succeeding Robert Bach.

Theis is a partner with HRO's litigation practice group. He founded the litigation firm of Musgrave & Theis, which merged with HRO in 2006. He is a former state antitrust prosecutor.

Bach had been the firm's executive committee chairman for eight years, HRO (hro.com) said in a statement Tuesday. Bach will return to full-time law practice.

Theis had been HRO's general counsel. Mashenka Lundberg will assume that post.

HRO, founded in 1898, is Denver's second-largest locally based law firm, according to the Denver Business Journal's Book of Lists. The firm says it has more than 260 attorneys in three Colorado officers as well as in Los Angeles, San Francisco, Salt Lake City, London and Munich.

McGuireWoods LLP and Helms Mulliss & Wicker PLLC are joining forces in a merger that will create a law firm with nearly 900 lawyers and offices in 17 locations.

The combined firm will be known as McGuireWoods LLP. The merger will be effective at the close of business on March 31, 2008.

McGuireWoods currently has 750 lawyers at 15 locations worldwide, including 40 in Charlotte. Helms Mulliss, established in Charlotte in 1922, has 145 lawyers, including 120 in Charlotte and 25 in offices in Raleigh and Wilmington.

Triangle Business Journal reported in January that Charlotte-based Helms Mulliss & Wicker was in merger talks with Richmond, Va.-based McGuireWoods. Firms with a strong Charlotte presence often are courted by out-of-state firms interested in the city's high-powered financial sector.

Both firms do business with Wachovia and Bank of America. But Richard Cullen, chairman of McGuireWoods, says that the merger was driven by more than just obtaining additional banking business.

"It would be wrong to assume we're doing this merger because of any one city in North Carolina or any one client," says Cullen. "We're very eager to be in Raleigh. We're planning on growing that office."

Cullen declined to go into specifics about how many people might be added over the coming years in the Raleigh office, which currently has 20 lawyers.

After the merger, Peter Covington, the chairman and managing member of Helms Mulliss, will become vice chairman of McGuireWoods, a newly created position.