This excerpt taken from the CVS 10-K filed Feb 27, 2007.
Intellectual Property and Licenses ~ We have registered or applied to register for a variety of trade names, service marks, trademarks and business licenses for use in our business. We regard our intellectual property as having significant value and as being an important factor in our marketing efforts. We are not aware of any facts that could negatively impact our continuing use of any of our intellectual property. Our pharmacies and pharmacists must be licensed by the appropriate state boards of pharmacy. Our pharmacies and distribution centers are also registered with the Federal Drug Enforcement Administration. Because of these licensing and registration requirements, we must comply with various statutes, rules and regulations, a violation of which could result in a suspension or revocation of these licenses or registrations.