The International Trade Fair iENA provides visitors an insight into the worldwide inventorship and impresses by the high level of inventions, from real solutions and relief for many areas of daily living to high-tech inventions. Inventors from around the world use IENA as a marketing platform to present ideas, prototypes and advanced products and services to an international audience of specialists and to establish contacts with license holders and exploiters. The spectrum covers innovation in fields like automotive, medicine, construction, office supplies, computer, electrical engineering, electronics, home economics and mechanical engineering. As part of the fair the incumbent SIGNO inventors' symposium is held.