The pharmaceutical industry is ready to fall off a cliff -- a "patent cliff." Over the next few years, some of the world's most popular and lucrative medicines will go off patent, and generic competition will siphon an estimated quarter of a trillion dollars from drugmakers' bottom lines. Continue reading The 10 Biggest-Selling Drugs That Are About to Lose Their Patent The 10 Biggest-Selling Drugs That Are About to Lose Their Patent originally appeared on DailyFinance on Sun, 27 Feb 2011 08:00:00. Filed Under: Company News , Investing , Health Care , Johnson & Johnson , Pfizer , Bristol-Myers Squibb , Merck , Eli Lilly , Astrazeneca Permalink | Tweet this! | Comments