24 outubro 2002

CONTAMINANTES
Pfizer Sues to Protect Viagra Patent: Pfizer Inc., the world's biggest drugmaker, said it received a broad patent on its impotence drug Viagra, prompting it to file lawsuits against rivals in a bid to fend off competition in a market analysts estimate could hit $4 billion by 2006.
Pfizer, based in New York, said its new patent prevents companies from introducing drugs that block an enzyme known as PDE-5 inhibitor. The enzyme affects blood flow in the body, which is important in treating erectile dysfunction.
Pfizer Claims Lilly, GSK, Bayer, ICOS Violate Viagra Patent: Lilly ICOS said it intends to "vigorously defend itself" against a claim by Pfizer Inc. that its erectile dysfunction candidate, Cialis, infringes on Pfizer's patent that protects the blockbuster drug, Viagra.