Three U.S. firms now face infringement suits for refusing to pay: Applera, Nuvelo and Covance.

FORBES: Magazine Article

Their views, of course, affect the fortunes of Parexel, PPD, Charles River Laboratories, Covance and many others.

FORBES: Whither Contract Research Organizations: A Glass Half Full?

Quintiles and Covance both do work for the world's 50 largest drug companies.

FORBES: Ghost cars, ghost brands

Quintiles and Covance are there to absorb the ebb and flow.

FORBES: Ghost cars, ghost brands

Hungry entrepreneurialism has turned PPD into one of the largest and leanest providers of clinical trial services to the drug and biotech industries (Covance and private Quintiles are the biggest overall).

FORBES: Magazine Article

Hungry entrepreneurialism has turned PPD into one of the largest and leanest providers of clinical trial services to the drug and biotech industries ( Covance (nyse: CVD - news - people ) and private Quintiles are the biggest overall).

FORBES: The Best Of The Best

So far the antiresearch crowd has forced the company to close a small operation that distributed primates in the U.K. Remarkably, antivivisectionists have not pursued Foster in the U.S. A bigger challenge to preclinical research may be to beat out such competitors as Covance, which originally specialized in human clinical trials, and MDS, a provider of contract drug discovery services.

FORBES: Magazine Article