I remember reading a paper about marking with respect to software patents - since marking is required in order to enforce software patents, if a patent holder f

I remember reading a paper about marking with respect to software patents - since marking is required in order to enforce software patents, if a patent holder fails to cite patent numbers on applications that use the patent, there are limitations the enforcement of that patent. This would mean, for example, that for Amazon to fully enforce the One Click patent they would have to note "Pat." or somesuch on the web page.