This was inevitable - Google takes a laissez-faire attitude towards copyright violation on Android market, which is full of ripped-off IP - games with names and artwork belonging to other companies, rip offs of Rolex logos for clocks, etc - that I've personally reported and that have always been ignored by Google.
If they don't care about the small stuff - and it seems they don't - something nastier was always going to come along.
Hell if they'd bothered to notice one of the submitted apps was 'Spider Man' perhaps this would already have been averted.
The way it is supposed to be done is with a DMCA complaint, and I don't think you can do that unless you own the IP in question. Or are you saying that they are ignoring DMCA complaints? That is a much more serious accusation.
Android Market has a 'flag' button that lets you specify, eg, that 'Wolverine' isn't anything to do with Marvel but uses Marvel characters and artwork. They ignore this and similar copyright infringement flags.
You have to own the content to file a DMCA complaint.
If they don't care about the small stuff - and it seems they don't - something nastier was always going to come along.
Hell if they'd bothered to notice one of the submitted apps was 'Spider Man' perhaps this would already have been averted.