comparative advertisements in a sentence

1. This is often practiced in negative advertisements and comparative advertisements, both for products and political causes.
2. However, studies have shown that while comparative advertisements had increased since 1960, the relative amount of comparative advertising is still small.
3. Comparative advertisements could be either indirectly or directly comparative, positive or negative, and seeks  to associate or differentiate the two competing brands.
4. It was also held that a trademark proprietor could not prevent a competitor s use of a sign similar or identical to his mark in a comparative advertisement, which satisfies all the conditions of the Comparative Advertising Directive.
5. If the Advocate General's decision in the O2 case were followed by the ECJ, competitors will not be able to use trademark legislation either to prevent a comparative advertisement through an injunction or to charge in respect of its use.
6. It's difficult to find comparative advertisements in a sentence.