"...The announcement confirmed that Microsoft was planning to use its software patent portfolio against interoperating products by requiring a patent license for all commercial activity [...] Microsoft's patent licences are incompatible with Free Software [...] Free Software's freedoms to use, study, share and improve software without additional restrictions are key to the success and utility of Free Software in both commercial and non-commercial ICT infrastructure. They are also the basis for many of today's working examples of interoperability and competition..."