Guillaume has an assistant professor position at University Paris Diderot. Since he hold his PHD from University Paris 7 Denis Diderot, Guillaume works on complex system modelling. In 2005, He started to work on IPR tracking tools and methodologies at INRIA Paris-Rocquencourt Research Centre. Since that date, he has been in charge of the research and development project leading in 2009 to antelink spin off. Guillaume is an early adopter of open source with a particular focus on innovative technologies. He now aims to contribute to set up a legal framework supporting OSS communities, through his commitment to FOSSBazaar community. Prior to antelink company, Guillaume was co-founder of Artenum, an open source company which develops and promotes open source software, and associated communities for customers like the European Space Agency. He set up and has run for two years the LibreSource project (a 100% java based forge). Guillaumeâ€™s experiences show, if needed, the close connection between open source, research communities and software industry.