For the purposes of section 4(l)(a)(i), confusion may, in particular, occur with respect to any of the following: (a) a trademark, whether registered or not; (b) a trade name; (c) a business identifier other than a trademark or trade name; BB020EN Unfair Competition, Act, 14/09/1998, No. 20 page 3/5 (d) the appearance of a product; (e) the presentation of products or services; (f) the association