That aren't "enforcing" their trademark in the courts where the attempt would probably be unsuccessful, they are just threating a guy with app store removable unless he does what they say.

The trademark summary says 'Electronic hand-held game units other than those adapted for use with an external display screen or monitor;'

I don't see why they would be unsuccessful in court. "Retina" is not a term normally associated with displays, so I see no problem with it as a trademark.

But in this context it has nothing or very little to do with displays - just images. Does the trademark still apply? We almost certainly won't find out, since lawsuits are so expensive that Bonobo will presumably just acquiesce.

You weren't aware of it, but it's been posted in other locations that another trademark for Retina by apple specifically covers software.

Ah, thanks.

One trademark summary. Another: " Computers; computer hardware; computer displays; computer software; handheld mobile digital electronic devices used as a telephone, handheld computer, personal digital assistant, electronic organizer, and electronic notepad, and used to access the Internet, electronic mail, and other digital data" Serial Number: 85056807 - http://tess2.uspto.gov/bin/gate.exe?f=searchss&state=401...

Same source as the story: http://www.trademarkia.com/retina-85056807.html