Business news now, and the telecoms firm Galacall has announced it may be taking legal proceedings against the newcomer and potential rival in the telecoms market, Frontline. Frontline recently ran a series of TV commercials in which all its sales staff wore distinctive purple T-shirts. Galacall, whose trademark brand name appears in a similar shade of purple, hasn't said it will sue Frontline yet but is considering its position. Well, on the line to discuss this story is lawyer and legal expert in trademark law, Rene Mackersmann for the London-based firm Parkers and Mackersmann. Good morning. So Rene, I was wondering how serious Galacall is about all this? Surely they only have a case against a company which infringes the trademark by using a similar name, don't they? Well, no. In fact there are a number of examples where companies or brands have tried to prevent others from using what they consider as trademark colours. Take the case of the mobile phone company Orange trying to stop easyMobile using the colour orange. The easyGroup company had used orange on all its previous ventures, but when it launched a rival mobile phone brand, the operator Orange said easyMobile was breaking the law by using its colour in the same marketplace.