Interflora Win Court Case Againt M&S in The UK
This case has dragged on for a *long* time, and M&S will probably still appeal the decision but…
It seems that a UK court has ruled that you are not allowed to bid on competitor keywords if there is a decent chance that consumers may be mislead into thinking that you actually are your competitor or are in some way providing the service of your competitor (I think).
It is a little bit early to stop bidding on all competitor keywords in AdWords and Bing Ads, it is food for thought.
Here are a few links for reference:-