<div id="subtitle">Judge upholds Merck patent on blockbuster allergy drug Singulair, protecting sales till 2012</div><div><p>The patent for Merck & Co.'s blockbuster allergy and asthma drug is valid, a federal judge ruled Wednesday, handing the drugmaker a crucial victory in its 2 1/2-year legal battle ...

<div id="subtitle">Drug wholesalers and insurers sue Merck, saying Singulair patent is invalid and inflates price</div><div><p>The battle over the patent on Merck and Co.'s allergy and asthma drug Singulair, the best-selling drug of one of the world's largest drug makers, continued Friday as a group ...

<div><p>NEW YORK (Reuters) - Merck & Co <MRK.N> said second-quarter earnings fell, hurt by lower sales of its cholesterol drugs, but income from partnerships and a rebound in sales of asthma drug Singulair helped the drugmaker beat profit forecasts.</p><p>Merck, whose shares rose ...

<div><p>New labels on popular asthma drugs like Merck's Singulair must highlight language about suicidal behavior, depression and anxiety seen in a small number of patients, federal regulators said Friday.</p><p>After 15 months of investigation, the Food and Drug Administration said Merck & Co. Inc., AstraZeneca and ...