A Practice Note on protecting non-traditional trademarks in the US under the Lanham Act, for example sound marks, color marks, scent marks, motion marks, and hashtag marks. This Note discusses the registrability of non-traditional marks, distinctiveness and functionality issues particular to non-traditional marks, how to search for non-traditional marks on the US Patent and Trademark Office (USPTO) electronic Trademark Search system (formerly TESS), and filing and enforcement considerations, including guidance under the Trademark Manual of Examining Procedure (TMEP).