Lucas, Eugénio2020-01-302020-01-3020191-932917-15-22520-6486http://hdl.handle.net/10400.8/4580An ancient memory activated by a smell is a reality that everyone has already experienced. This memory can be used commercially and for this reason, companies are very interested in being able to register smells as trademarks. Olfactory trademarks, like other non-traditional trademarks, have been gaining some dimension, but they raise many legal issues, which are being studied in different countries. There are currently countries where it is not possible to register olfactory trademarks, while in others, it is possible to register them, but there is no single procedure to do this register. We will take a critical approach to several existing solutions related to olfactory trademark registration.engOlfactory trademarkNon-traditional trademark, USA, European Union, WIPOconference object