TargetOnlineMarketing.com previously reported on PPC war between Marks & Spencer and Interflora.

Here is a quick wrap up of the situation:

• Interflora sued M&S in 2009 for bidding on its trademark in the UK (when a user would search for Interflora in the UK, the M&S ad would appear).
• The High Court of Justice of Wales and England refers the questions to the ECJ
• 2010, the ECJ ruled that Google was not liable for trade mark infringement by selling the advertising service to rival companies.
• March 2011, ECJ' Niilo Jääskinen - the Advocate General of the European Court of Justice (ECJ) - advised for Marks & Spencer to be found liable for trade mark infringement by using ‘Interflora’ as a Google AdWord keyword.

Last week,  the ECJ ruled in favor of Interflora which needs to be applied by the High Court in the UK in order to appreciate M&S' liability.

The ECJ said that trademark owners can stop companies using their brands as triggers for adverts for competing products if that use "substantially interferes with the proprietor’s use of its trademark to acquire or preserve a reputation capable of attracting consumers and retaining their loyalty". The interference is yet to be defined though...

Interflora's marketing director, Michael Barringer, says: "This judgment backs all the hard work and effort we have put in to defending the Interflora brand. People searching the internet for "Interflora" want "Interflora, the flower experts and no one else. Our brand stands for quality and service and together with our network of independent florists, we have spent the last 80 years building this reputation."