Legal context: The emergence of new web-based programs being used in the fieldsof patent applications and IP legal information has opened upa range of new opportunities for IP-related legal processesand knowledge sharing. Key points: This article explains the background to Web 2.0 applicationsand explores the potential for the use of wikis in various areasof IP. It notes the limitations, as well as the possibilities,of wikis and explains how they work in practice. It outlinesthree recent examples of wikis in the IP world, explaining howthey work and the significance of their overall objectives. Practical significance: The adoption of this technology by official bodies suggestswider future use and the appearance of unofficial sites showsthat current developments have already reached a stage wheremany IP practitioners can begin to interact and share knowledgein a way that has not been considered previously. It is conceivablethat developments in this area will be rapid and it is in theinterests of users to familiarize themselves with the use ofthis new social software.