Getting requirements right is critical to the success of just about any software development project, and yet oftentimes challenging and in need of a large amount of knowledge and experience. "Patterns" have been used to capture knowledge of software development, concerning software architectures, component designs and programs, and more recently requirements engineering too. This workshop provides an open forum for researchers and practitioners to exchange ideas and experience, regarding pattern-based approaches to capturing, organizing, and reusing all aspects of requirements engineering-related knowledge, from both product and process perspectives.