The Intellectual Property Department (IPD) of the Hong Kong Special Administrative Region Government and the State Intellectual Property Office (SIPO) signed the Co-operation Arrangement in the Area of Patent in Hong Kong today (December 6). Photo shows the Commissioner of the SIPO, Mr Tian Lipu (right), and the Director of Intellectual Property, Mr Peter Cheung, signing the Arrangement on behalf of the SIPO and the IPD respectively.