ESA’s just asks you to fill in and submit a simple form, which you will find on ESA’s Brand Centre. Once you receive ESA's confirmation, you can start selling your products.
Until now, the use of ESA emblems has only been permitted on merchandising produced in close cooperation with ESA. This includes the merchandise available at the ESA Space Shop, as well as products included as part of a comprehensive outreach programme with an ESA commercial brand licensing agreement.