A method for producing microneedles. The method including disposing a first layer of a radiation sensitive polymer on to a working surface and selectively irradiating the first layer such that the first layer has at least one irradiated region and at least one non-irradiated region. The method also including...http://www.google.ca/patents/US20040072105?utm_source=gb-gplus-sharePatent US20040072105 - Polymer microneedles