The Convention on the Rights of Persons with Disabilities and its Optional Protocol was adopted on December 13, 2006 at the United Nations headquarters in New York, and was opened for signature on March 30, 2007. There were 82 signatories to the Convention, 44 signatories to the Optional Protocol, and 1 ratification of the Convention, making this the highest number of signatories in history to a Convention on its opening day. It is the first comprehensive human rights treaty of the 21st century and is the first human rights Convention to be open for signature by regional integration organizations.
There are currently 155 signatory States (as of April 2013); the European Union has also signed.
This information and more, including the full text of the Convention can be found on the UN Enable website.