The article state that they gave notice, and that Apple hasn't done anything yet. It's interesting to see what Apple bans from the app store without a thought, and what they're reluctant to do anything about.
I've been on the receiving end of an app related copyright notice before. (I used the 'NFL' trademark without permission - I'm not American and thought it was the name of the sport and couldn't be copyrighted). Apple forwarded me the notice via email and asked me to respond and take action. I responded to the NFL guys, fixed the problem and never had to remove the app.
So Apple gives the developer a chance to respond (i.e. it will probably take a few days to see any action). If they didn't we would end up with the mess like they have with DMCA notice takedowns on YouTube.
yes, otherwise someone unscrupulous could just file complaints against all their competitors and effectively lock them out of the App Store for a period of time.
We don't really know how long it takes for Apple to apply all the bans that we hear about (and the others we don't hear about), but it would be interesting to find out how this process works.
This situation reminds me of the notice Apple sent to retailers not to sell the Samsung Galaxy Tab 10.1.
The company is based in China, and when it comes to IP and copyright China typically doesn't care. Sure they could file against them in Canada but it will get them nowhere.
Game art falls under copyright, doesn't it? Couldn't the author go after them for infringement?