Advertising which refers to a competitors product in conjunction with the advertisers, suggesting some comparability or equivalence. Comparative advertising was and is prohibited in many jurisdictions as inherently deceptive or as an infringement of the trademark or marks of the product compared to. Moreover, inaccurate comparisons in many legal systems are actionable as Unfair Competition or Unfair Commercial Practices. Comparative advertising has been rendered legal within certain constraints in the European Union under the Comparative Advertising Directive.