Did you know at least one other corporation had a trademark for the name iPhone before Apple announced their choice of product name in 2007?
Considering what patent trolls Apple is, and considering Brazil is a sizable market for smartphones and computer equipment, this is a tiny bit of karma, as far as I'm concerned.
BTW, Xerox has yet to see money for inventing the OS GUI and the modern mouse.
How many patent trolls has Apple stepped in to defend their customers from? Lodsys backed off from attacking App Store developers when Apple said they'd sign on as a co-defendant in any case.
How many patent trolls has Nathan Myhrvold created through Intellectual Ventures? Literally thousands.
Apple's embroiled in a patent war. Don't confuse that with being patent trolls.
You also forget that Xerox remained uninterested in producing a consumer computer incorporating the concepts they pioneered. Likewise, HP, when Steve Wozniak was working there, declined to produce a personal computer he designed.
http://www.law.cornell.edu/uscode/text/15/1127
A mark shall be deemed to be “abandoned” if either of the following occurs:
(1) When its use has been discontinued with intent not to resume such use. Intent not to resume may be inferred from circumstances. Nonuse for 3 consecutive years shall be prima facie evidence of abandonment. “Use” of a mark means the bona fide use of such mark made in the ordinary course of trade, and not made merely to reserve a right in a mark.