HAYWARD, Calif.--(BUSINESS WIRE)--Nov. 7, 2005--IMPAX Laboratories, Inc. (OTC:IPXL) announced today it has entered into a ten year Exclusive Supply and Distribution agreement with DAVA Pharmaceuticals, Inc. (DAVA) for IMPAX's 10mg, 20mg, 40mg and 80mg dosage strengths of Oxycodone Hydrochloride Extended Release Tablets. In exchange for payments of up to $60 million over the next 5 years and sharing of gross profits, DAVA will have exclusive sales and distribution rights in the United States and Puerto Rico. IMPAX will be responsible for all manufacturing and regulatory aspects. The combined branded and generic U.S. sales for the 10mg, 20mg, 40mg and 80mg strengths of Oxycodone Hydrochloride Extended Release Tablets were over $1.8 billion for the twelve-month period ended August 31, 2005 according to NDCHealth.