Brussels, 08/09/2010 (Agence Europe) - In conclusions on case C-159/09, delivered on Tuesday 7 September, the advocate general found that, under the terms of the relevant European legislation (Directives 2005/29/EC on unfair commercial practices and 84/450 on comparative advertising) advertising which compares products - in this case foodstuffs - which meet the same needs and which can be seen as being substitutes for one another (interchangeability) purely on the basis of price is legal....