SAN MATEO, CA -- (MARKET WIRE) -- December 22, 2006 -- SciClone Pharmaceuticals, Inc. (NASDAQ: SCLN) announced today that its Board of Directors has adopted a Stock Purchase Rights Plan designed to enable all SciClone stockholders to realize the full value of their investment and to provide for fair and equal treatment for all SciClone stockholders in the event that an unsolicited attempt is made to acquire SciClone. The adoption of the Rights Plan is intended as a means to guard against any potential use of takeover tactics designed to gain control of SciClone without paying all stockholders full and fair value. The distribution of the Rights is not in response to any proposal to acquire SciClone.
