One particular focus of Till Jaeger’s work is on the legal issues created by free and open source software (FOSS). Till Jaeger is a founding member of the Institute for Legal Questions on Free and Open Source Software (ifrOSS) in Germany, which researches legal questions regarding the Open Source model (www.ifross.org). He has represented his clients in several lawsuits to enforce the GPL in court. Till Jaeger was a member of the Committee C in the GPLv3 drafting process.