“In my view there can be discerned from the cases a jurisdiction to grant injunctive relief where a defendant is equipped with or is intending to equip another with an instrument of fraud. Whether any name is an instrument of fraud will depend upon all the circumstances. A name which will, by reason of its similarity to the name of another, inherently lead to passing off is such an instrument. If it would not inherently lead to passing off, it does not follow that it is not an instrument of fraud. The court should consider the similarity of the names, the intention of the defendant, the type of trade and all the surrounding circumstances. If it be the intention of the defendant to appropriate the goodwill of another or enable others to do so, I can see no reason why the court should not infer that it will happen, even if there is a possibility that such an appropriation would not take place. If, taking all the circumstances into account the court should conclude that the name was produced to enable passing off, is adapted to be used for passing off and, if used, is likely to be fraudulently used, an injunction will be appropriate. It follows that a court will intervene by way of injunction in passing off cases in three types of case. First, where there is passing off established or it is threatened. Second, where the defendant is a joint tortfeasor with another in passing off either actual or threatened. Third, where the defendant has equipped himself with or intends to equip another with an instrument of fraud. This third type is probably a mere quia timet action.”