Read more torcetrapib stories on Newserhttp://www.newser.com/taggrid/18387/torcetrapib.htmlhttp://img1-cdn.newser.com/images/newser-black250x40.gifhttp://www.newser.com/2012 - Newseren-usNewser Feed GeneratorThu, 24 May 2012 04:23:30 CDThttp://www.newser.com/story/13425/big-pharma-faces-big-plunge.htmlPeter Fearon<img src='http://img2-cdn.newser.com/getimage.aspx?mediaid=52591&width=45&height=45&crop=Y&updateddate=20110401024908' border='0' />Patent protections on some of the pharmaceutical industry's best-selling drugs, like Lipitor, Plavix and Singulair, are due to expire in the next several years, and drug manufacturers have little in the pipeline to replace them. The drug companies will lose billions—as much as half their combined revenue—to generic...Forty-milligram tablets of the drug Lipitor are photographed in Glen Rock, N.J. in a file photo from Nov. 15, 2005. Drug companies stand to lose billions of dollars in revenue when patents expire on best selling drugs like Lipitor (AP Photo/Mel Evans, File)http://www.newser.com/story/13425/big-pharma-faces-big-plunge.htmlThu, 06 Dec 2007 04:50:44 CST