Rather belatedly passing on an interesting case I picked up on my Lawtel update a few days ago about getting an injunction in comparative advertising cases (Boehringer Ingelheim Ltd v Vetplus Ltd [2007] EWCA Civ 584 CA (Civ Div) (Pill LJ, Longmore LJ, Jacob LJ) 20/6/2007).
We're talking pet foods/formulas: the products in issue were supposed to have a beneficial effect on dogs' joints and contained an ingredient called chondroitin. Vetplus decided to test Boehringer's products to see whether they had a chondroitin content consistent with that claimed on the label. Vetplus intended to publish the results of its test in comparative advertising material. Boehringer objected to the findings/results and sought an injunction to restrain publication.
Basically, the question was this: what's the relevant law/threshold for granting an interim injunction in comparative advertising cases? American Cyanamid (i.e. straight forward IP injunction) or Cream Holdings (i.e. IP injunction which engages Article 10 freedom of expression)?
The answer, in short: Cream Holdings. Extract from the summary from Lawtel below:
The basis for departing from the normal American Cyanamid rule is through s.12(3) of the HRA 1998, which imposes a threshold test which has to be satisfied before a court can grant interlocutory injunctive relief which might affect the exercise of the right to freedom of expression under Article 10. The general threshold which had to be crossed by the claimant was that he would probably succeed at the trial, Cream Holdings Ltd v Banerjee (2004) UKHL 44 [2005] 1 AC 253 applied. That should be the general rule for trade mark infringement in a comparative advertising case. The instant case was not one in which the potential adverse consequences of disclosure would be particularly grave. If damage to reputation were in itself to be considered particularly grave, then nearly all cases would fall into that class and s.12(3) would be rendered virtually pointless. Accordingly the general rule applied. Therefore no interim injunction should be granted because B had not shown that it was more likely to succeed than not.

Calm down - you don't have to reach for grandad's trusty "tin hat", or start digging a shelter in the back yard. Don't write off the holiday home in the Dordogne just yet.