"The rise of software patents continues to pose challenges for free and open source software (FOSS) developers, including the difficulties of clearing patents and the risk of patent litigation. In his presentation ? Patents and Open Source After Bilski,? Rob Tiller, vice president and assistant general counsel, IP for Red Hat, will explore the legal issues raised by patent law for FOSS developers and users. Tiller will provide an overview for non-lawyers on exclusionary patent rights and contrast those with the open collaboration culture of FOSS. He will also discuss the recent Bilski decision of the U.S. Federal Circuit, and how that decision might improve the current problem of software patents facing FOSS developers."