Biogen Idec Inc. (NASDAQ: BIIB) announced today that it will present at the 31 st Annual J.P. Morgan Healthcare Conference. The webcast will be live on Monday, January 7, 2013 at 2:30 p.m. PT, 5:30 p.m. ET. To access the live webcast, please visit Biogen Idec’s Investors section at www.biogenidec.com. An archived version of the webcast will be available for 14 days following the presentation. About Biogen Idec Through cutting-edge science and medicine, Biogen Idec discovers, develops and delivers to patients worldwide innovative therapies for the treatment of neurodegenerative diseases, hemophilia and autoimmune disorders. Founded in 1978, Biogen Idec is the world’s oldest independent biotechnology company. Patients worldwide benefit from its leading multiple sclerosis therapies, and the company generates more than $5 billion in annual revenues. For product labeling, press releases and additional information about the company, please visit www.biogenidec.com.