LIVINGSTON, N.J.--(BUSINESS WIRE)--Columbia Laboratories, Inc. (Nasdaq: CBRX) (the “Company”) today announced that its Board of Directors on March 1, 2013 adopted an amendment to its Stockholder Rights Plan (the “Rights Plan”), originally adopted on March 12, 2002, to extend the expiration date of the Rights Plan from July 3, 2013 to July 3, 2016 to preserve the value of significant tax assets associated with the Company’s tax net operating loss carryforwards (“NOLs”) under Section 382 of the Internal Revenue Code. The Company’s 2013 Proxy Statement will include a non-binding advisory proposal asking the Company’s stockholders to ratify the extension of the expiration date of the Rights Plan from July 3, 2013 to July 3, 2016. If the Company’s stockholders do not ratify the amendment, the Company’s Board of Directors will decide how to proceed.