This report would suggest so, as it looks at evening newcasts in 2006:
The Business & Media Institute (BMI) has found a recurring network news bias against the pharmaceutical industry, treating drugs as an entitlement rather than an expensive-to create product, refusing to credit and often ignoring entirely the companies that made the medicine. Even when one new drug was hailed as a “major advance in combating breast cancer” and a “major medical breakthrough,” its manufacturer was given only a passing mention on one network.
(via a reader tip)