In 2010, Orange devoted 1.9% of its revenue, or €845 million, to research and development. Since January 2007 Orange has unified its research laboratories and technocentres in the Orange Labs network. As of 31 December 2010 Orange held a portfolio of 7,892 patents, 327 which were filed in 2010. Orange employs 3,700 people in research and development per year throughout the organisation, including more than 200 doctoral candidates and post-doctorates. Orange's research and development is based on partnerships with industry, suppliers and operators, universities and schools, academic institutes and research programs such as the following: