Red Hat and Rackspace have won an early dismissal of a patent infringement claim brought by Uniloc, in a decision the companies are hailing as a potential landmark in intellectual property law. Unlioc had sued Rackspace in June 2012, saying that the Linux OS violated a patent Uniloc holds related to processing floating-point numbers. Rackspace uses Red Hat's flavor of Linux. The software vendor defended Rackspace in the case as part of its Open Source Assurance program for customers, according to a statement.