I think this is a different analogy.

>This is the way companies protect their trademarks. For example, if you are in a restaurant and order a Coke and they serve Pepsi, if they don't tell you, Coke can sue them. If Coke goes for several years without doing trademark enforcement, the courts can rule it a generic term.

You say: If someone makes software and puts a 'Powered by Visual FoxPro' logo on it while it was build in Delphi, Inprise could sue that person. Abuse of inappropriate use of such logo (trademark) is a different thing IMO, and above all somthing you can't prevent.

Walter,